0.3.0

pass fixes size array arg in solidity poseidon implementation

.eslintrc.js

@@ -1,7 +1,4 @@
 module.exports = {
-    "plugins": [
-        "mocha"
-    ],
     "env": {
         "es6": true,
         "node": true,
@@ -27,7 +24,6 @@ module.exports = {
         "semi": [
             "error",
             "always"
-        ],
-        "mocha/no-exclusive-tests": "error"
+        ]
     }
 };

README.md

@@ -1,4 +1,18 @@
-# cirpedersen
+# CircomLib
 
-Pedersen Hash and Exponentiation circuits using Baby Jub Curve in circom language
+## Description
 
+- This repository contains a library of circuit templates. 
+- All files are copyrighted under 2018 0KIMS association and part of the free software [circom](https://github.com/iden3/circom) (Zero Knowledge Circuit Compiler). 
+- You can read more about the circom language in [the circom documentation webpage](https://docs.circom.io/).
+
+## Organisation
+
+This respository contains 5 folders:
+- `circuits`: it contains the implementation of different cryptographic primitives in circom language.
+- `calcpedersenbases`: set of functions in JavaScript used to find a set of points in [Baby Jubjub](https://github.com/barryWhiteHat/baby_jubjub) elliptic curve that serve as basis for the [Pedersen Hash](https://github.com/zcash/zcash/issues/2234).
+- `doc`: it contains some circuit schemes in ASCII (must be opened with Monodraw, an ASCII art editor for Mac).
+- `src`: it contains similar implementation of circuits in JavaScript.
+- `test`: tests.
+
+A description of the specific circuit templates for the `circuit` folder will be soon updated.

circuits/README.md

@@ -1,3 +1,19 @@
+# CircomLib/Circuits
+
+## Description
+
+- This folder contains circuit templates for standard operations and many cryptographic primitives.
+- Below you can find specifications of each function. In the representation of elements, there are three tyes:
+    - Binary
+    - String
+    - Field element (the field is specified in each case. We consider 2 possible fields: Fp and Fr, where p... and r... .)
+
+## Table of Contents
+
+[TOC]
+
+## Jordi
+
 * compconstant - Returns 1 if `in` (expanded to binary array) > `ct`
 * aliascheck - check if `in` (expanded to binary array) oveflowed its 254 bits (<= -1)
 * babyjub - twisted Edwards curve 168700.x^2 + y^2 = 1 + 168696.x^2.y^2
@@ -12,3 +28,803 @@
 * smt - Sparse Merkle Tree
   * https://ethresear.ch/t/optimizing-sparse-merkle-trees/3751
 * montgomery https://en.wikipedia.org/wiki/Montgomery_curve
+
+## Circuits
+
+### sha256
+
+Folder containing the implementation of sha256 hash circuit.
+
+### smt
+
+Folder containing the circuit implementation of Sparse Merkle Trees.
+
+### aliascheck
+
+- `AliasCheck()`
+
+    - DESCRIPTION
+    - SCHEMA
+    - INPUT
+    - OUTPUT
+    - BENCHMARKS
+    - EXAMPLE
+
+### babyjub
+
+Arithmetic on [Baby Jubjub elliptic curve](https://github.com/barryWhiteHat/baby_jubjub) in twisted Edwards form. (TODO: Expose here the characteristics of the curve?)
+
+
+- `BabyAdd()`
+
+    - DESCRIPTION
+
+      It adds two points on the Baby Jubjub curve. More specifically, given two points P1 = (`x1`, `y1`) and P2 = (`x2`, `y2`) it returns a point P3 = (`xout`, `yout`)  such that
+
+        (`xout`, `yout`) =  (`x1`,`y1`) + (`x2`,`y2`)
+             = ((`x1y2`+`y1x2`)/(1+`dx1x2y1y2`)),(`y1y2`-`ax1x2`)/(1-`dx1x2y1y2`))
+
+    - SCHEMA
+       ```
+                                        var a     var d
+                                          |         |
+                                          |         |
+                                    ______v_________v_______
+                   input x1 ---->  |                        |
+                   input y1 ---->  |        BabyAdd()       | ----> output xout
+                   input x2 ---->  |                        | ----> output yout
+                   input y2 ---->  |________________________|
+       ```
+
+    - INPUTS
+
+      | Input         | Representation | Description         |                                             |
+      | ------------- | -------------  | -------------       | -------------                               |
+      | `x1`          | Bigint         | Field element of Fp | First coordinate of a point (x1, y1) on E.  |
+      | `y1`          | Bigint         | Field element of Fp | Second coordinate of a point (x1, y1) on E. |
+      | `x2`          | Bigint         | Field element of Fp | First coordinate of a point (x2, y2) on E.  |
+      | `y2`          | Bigint         | Field element of Fp | Second coordinate of a point (x2, y2) on E. |
+
+      Requirement: at least `x1`!=`x2` or `y1`!=`y2`.
+
+    - OUTPUT
+
+      | Input         | Representation | Description         |                                             |
+      | ------------- | -------------  | -------------       | -------------                               |
+      | `xout`          | Bigint         | Field element of Fp | First coordinate of the addition point (xout, yout) = (x1, y1) + (x2, y2).  |
+      | `yout`          | Bigint         | Field element of Fp | Second coordinate of the addition point (xout, yout) = (x1, y1) + (x2, y2). |
+
+    - BENCHMARKS (constraints)
+
+    - EXAMPLE
+
+- `BabyDbl()`
+    - DESCRIPTION : doubles a point (`xout`,`yout`) = 2*(`x`,`y`).
+    - SCHEMA
+    - INPUT
+    - OUTPUT
+    - BENCHMARKS
+    - EXAMPLE
+
+- `BabyCheck()`
+
+    - DESCRIPTION : checks if a given point is in the curve.
+    - SCHEMA
+    - INPUT
+    - OUTPUT
+    - BENCHMARKS
+    - EXAMPLE
+
+- `BabyPbk()`
+
+    - DESCRIPTION: : given a private key, it returns the associated public key.
+    - SCHEMA
+    - INPUT
+    - OUTPUT
+    - BENCHMARKS
+    - EXAMPLE
+
+
+### binsub
+
+- `BinSub(n)`
+
+    - DESCRIPTION: binary substraction.
+    - SCHEMA
+    - INPUT
+    - OUTPUT
+    - BENCHMARKS
+    - EXAMPLE
+
+### binsum
+
+- `nbits(a)`
+
+    - DESCRIPTION : binary sum.
+    - SCHEMA
+    - INPUT
+    - OUTPUT
+    - BENCHMARKS
+    - EXAMPLE
+
+- `BinSum(n, ops)`
+
+    - DESCRIPTION
+    - SCHEMA
+    - INPUT
+    - OUTPUT
+    - BENCHMARKS
+    - EXAMPLE
+
+### bitify
+
+- `Num2Bits()`
+
+    - DESCRIPTION
+    - SCHEMA
+    - INPUT
+    - OUTPUT
+    - BENCHMARKS
+    - EXAMPLE
+
+- `Num2Bits_strict()`
+
+    - DESCRIPTION
+    - SCHEMA
+    - INPUT
+    - OUTPUT
+    - BENCHMARKS
+    - EXAMPLE
+
+- `Bits2Num()`
+
+    - DESCRIPTION
+    - SCHEMA
+    - INPUT
+    - OUTPUT
+    - BENCHMARKS
+    - EXAMPLE
+
+- `Bits2Num_strict()`
+
+    - DESCRIPTION
+    - SCHEMA
+    - INPUT
+    - OUTPUT
+    - BENCHMARKS
+    - EXAMPLE
+
+- `Num2BitsNeg()`
+
+    - DESCRIPTION
+    - SCHEMA
+    - INPUT
+    - OUTPUT
+    - BENCHMARKS
+    - EXAMPLE
+
+### comparators
+
+- `IsZero() `
+
+    - DESCRIPTION
+    - SCHEMA
+    - INPUT
+    - OUTPUT
+    - BENCHMARKS
+    - EXAMPLE
+
+- `IsEqual()`
+
+    - DESCRIPTION
+    - SCHEMA
+    - INPUT
+    - OUTPUT
+    - BENCHMARKS
+    - EXAMPLE
+
+- `ForceEqualIfEnabled()`
+
+    - DESCRIPTION
+    - SCHEMA
+    - INPUT
+    - OUTPUT
+    - BENCHMARKS
+    - EXAMPLE
+
+- `LessThan()`
+
+    - DESCRIPTION
+    - SCHEMA
+    - INPUT
+    - OUTPUT
+    - BENCHMARKS
+    - EXAMPLE
+
+- `GreaterThan()`
+
+    - DESCRIPTION
+    - SCHEMA
+    - INPUT
+    - OUTPUT
+    - BENCHMARKS
+    - EXAMPLE
+
+- `GreaterEqThan()`
+
+    - DESCRIPTION
+    - SCHEMA
+    - INPUT
+    - OUTPUT
+    - BENCHMARKS
+    - EXAMPLE
+
+### compconstant
+
+- `CompConstant(ct)`
+
+    - DESCRIPTION
+    - SCHEMA
+    - INPUT
+    - OUTPUT
+    - BENCHMARKS
+    - EXAMPLE
+
+### eddsa
+
+Edwards Digital Signature Algorithm in Baby Jubjbub (link a eddsa)
+
+- `EdDSAVerifier(n)`
+
+    - DESCRIPTION
+    - SCHEMA
+    - INPUT
+    - OUTPUT
+    - BENCHMARKS
+    - EXAMPLE
+
+### eddsamimc
+
+- `EdDSAMiMCVerifier()`
+
+    - DESCRIPTION
+    - SCHEMA
+    - INPUT
+    - OUTPUT
+    - BENCHMARKS
+    - EXAMPLE
+
+### eddsamimcsponge
+
+- `EdDSAMiMCSpongeVerifier()`
+
+    - DESCRIPTION
+    - SCHEMA
+    - INPUT
+    - OUTPUT
+    - BENCHMARKS
+    - EXAMPLE
+
+### eddsaposeidon
+
+- `EdDSAPoseidonVerifier()`
+
+    - DESCRIPTION
+    - SCHEMA
+    - INPUT
+    - OUTPUT
+    - BENCHMARKS
+    - EXAMPLE
+
+### escalarmul
+
+- `EscalarMulWindow(base, k)`
+
+    - DESCRIPTION
+    - SCHEMA
+    - INPUT
+    - OUTPUT
+    - BENCHMARKS
+    - EXAMPLE
+
+- `EscalarMul(n, base)`
+
+    - DESCRIPTION
+    - SCHEMA
+    - INPUT
+    - OUTPUT
+    - BENCHMARKS
+    - EXAMPLE
+
+### escalarmulany
+
+- `Multiplexor2()`
+
+    - DESCRIPTION
+    - SCHEMA
+    - INPUT
+    - OUTPUT
+    - BENCHMARKS
+    - EXAMPLE
+
+- `BitElementMulAny()`
+
+    - DESCRIPTION
+    - SCHEMA
+    - INPUT
+    - OUTPUT
+    - BENCHMARKS
+    - EXAMPLE
+
+- `SegmentMulAny(n)`
+
+    - DESCRIPTION
+    - SCHEMA
+    - INPUT
+    - OUTPUT
+    - BENCHMARKS
+    - EXAMPLE
+
+- `EscalarMulAny(n)`
+
+    - DESCRIPTION
+    - SCHEMA
+    - INPUT
+    - OUTPUT
+    - BENCHMARKS
+    - EXAMPLE
+
+### escalarmulfix
+
+- `WindowMulFix()`
+
+    - DESCRIPTION
+    - SCHEMA
+    - INPUT
+    - OUTPUT
+    - BENCHMARKS
+    - EXAMPLE
+
+- `SegmentMulFix(nWindows)`
+
+    - DESCRIPTION
+    - SCHEMA
+    - INPUT
+    - OUTPUT
+    - BENCHMARKS
+    - EXAMPLE
+
+- `EscalarMulFix(n, BASE)`
+
+    - DESCRIPTION
+    - SCHEMA
+    - INPUT
+    - OUTPUT
+    - BENCHMARKS
+    - EXAMPLE
+
+### escalarmulw4table
+
+- `pointAdd`
+
+    - DESCRIPTION
+    - SCHEMA
+    - INPUT
+    - OUTPUT
+    - BENCHMARKS
+    - EXAMPLE
+
+- `EscalarMulW4Table`
+
+    - DESCRIPTION
+    - SCHEMA
+    - INPUT
+    - OUTPUT
+    - BENCHMARKS
+    - EXAMPLE
+
+### gates
+
+- `XOR`
+
+    - DESCRIPTION
+    - SCHEMA
+    - INPUT
+    - OUTPUT
+    - BENCHMARKS
+    - EXAMPLE
+
+- `AND`
+
+    - DESCRIPTION
+    - SCHEMA
+    - INPUT
+    - OUTPUT
+    - BENCHMARKS
+    - EXAMPLE
+
+- `OR`
+
+    - DESCRIPTION
+    - SCHEMA
+    - INPUT
+    - OUTPUT
+    - BENCHMARKS
+    - EXAMPLE
+
+- `NOT`
+
+    - DESCRIPTION
+    - SCHEMA
+    - INPUT
+    - OUTPUT
+    - BENCHMARKS
+    - EXAMPLE
+
+- `NAND`
+
+    - DESCRIPTION
+    - SCHEMA
+    - INPUT
+    - OUTPUT
+    - BENCHMARKS
+    - EXAMPLE
+
+- `NOR`
+
+    - DESCRIPTION
+    - SCHEMA
+    - INPUT
+    - OUTPUT
+    - BENCHMARKS
+    - EXAMPLE
+
+- `MultiAND`
+
+    - DESCRIPTION
+    - SCHEMA
+    - INPUT
+    - OUTPUT
+    - BENCHMARKS
+    - EXAMPLE
+
+### mimc
+
+Implementation of MiMC-7 hash in Fp being...  (link to description of the hash)
+
+- `MiMC7(nrounds)`
+
+    - DESCRIPTION
+    - SCHEMA
+    - INPUT
+    - OUTPUT
+    - BENCHMARKS
+    - EXAMPLE
+
+- `MultiMiMC7(nInputs, nRounds)`
+
+    - DESCRIPTION
+    - SCHEMA
+    - INPUT
+    - OUTPUT
+    - BENCHMARKS
+    - EXAMPLE
+
+### mimcsponge
+
+- `MiMCSponge(nInputs, nRounds, nOutputs)`
+
+    - DESCRIPTION
+    - SCHEMA
+    - INPUT
+    - OUTPUT
+    - BENCHMARKS
+    - EXAMPLE
+
+- `MiMCFeistel(nrounds)`
+
+    - DESCRIPTION
+    - SCHEMA
+    - INPUT
+    - OUTPUT
+    - BENCHMARKS
+    - EXAMPLE
+
+### montgomery
+
+- `Edwards2Montgomery()`
+
+    - DESCRIPTION
+    - SCHEMA
+    - INPUT
+    - OUTPUT
+    - BENCHMARKS
+    - EXAMPLE
+
+- `Montgomery2Edwards()`
+
+    - DESCRIPTION
+    - SCHEMA
+    - INPUT
+    - OUTPUT
+    - BENCHMARKS
+    - EXAMPLE
+
+- `MontgomeryAdd()`
+
+    - DESCRIPTION
+    - SCHEMA
+    - INPUT
+    - OUTPUT
+    - BENCHMARKS
+    - EXAMPLE
+
+- `MontgomeryDouble()`
+
+    - DESCRIPTION
+    - SCHEMA
+    - INPUT
+    - OUTPUT
+    - BENCHMARKS
+    - EXAMPLE
+
+### multiplexer
+
+- `log2(a)`
+
+    - DESCRIPTION
+    - SCHEMA
+    - INPUT
+    - OUTPUT
+    - BENCHMARKS
+    - EXAMPLE
+
+- `EscalarProduct(w)`
+
+    - DESCRIPTION
+    - SCHEMA
+    - INPUT
+    - OUTPUT
+    - BENCHMARKS
+    - EXAMPLE
+
+- `Decoder(w)`
+
+    - DESCRIPTION
+    - SCHEMA
+    - INPUT
+    - OUTPUT
+    - BENCHMARKS
+    - EXAMPLE
+
+- `Multiplexer(wIn, nIn)`
+
+    - DESCRIPTION
+    - SCHEMA
+    - INPUT
+    - OUTPUT
+    - BENCHMARKS
+    - EXAMPLE
+
+### mux1
+
+- `MultiMux1(n)`
+
+    - DESCRIPTION
+    - SCHEMA
+    - INPUT
+    - OUTPUT
+    - BENCHMARKS
+    - EXAMPLE
+
+- `Mux1()`
+
+    - DESCRIPTION
+    - SCHEMA
+    - INPUT
+    - OUTPUT
+    - BENCHMARKS
+    - EXAMPLE
+
+### mux2
+
+- `MultiMux2(n)`
+
+    - DESCRIPTION
+    - SCHEMA
+    - INPUT
+    - OUTPUT
+    - BENCHMARKS
+    - EXAMPLE
+
+- `Mux2()`
+
+    - DESCRIPTION
+    - SCHEMA
+    - INPUT
+    - OUTPUT
+    - BENCHMARKS
+    - EXAMPLE
+
+### mux3
+
+- `MultiMux3(n)`
+
+    - DESCRIPTION
+    - SCHEMA
+    - INPUT
+    - OUTPUT
+    - BENCHMARKS
+    - EXAMPLE
+
+- `Mux3()`
+
+    - DESCRIPTION
+    - SCHEMA
+    - INPUT
+    - OUTPUT
+    - BENCHMARKS
+    - EXAMPLE
+
+### mux4
+
+- `MultiMux4(n)`
+
+    - DESCRIPTION
+    - SCHEMA
+    - INPUT
+    - OUTPUT
+    - BENCHMARKS
+    - EXAMPLE
+
+- `Mux4()`
+
+    - DESCRIPTION
+    - SCHEMA
+    - INPUT
+    - OUTPUT
+    - BENCHMARKS
+    - EXAMPLE
+
+### pedersen_old
+
+Old version of the Pedersen hash (do not use any
+more?).
+
+### pedersen
+
+- `Window4()`
+
+    - DESCRIPTION
+    - SCHEMA
+    - INPUT
+    - OUTPUT
+    - BENCHMARKS
+    - EXAMPLE
+
+- `Segment(nWindows)`
+
+    - DESCRIPTION
+    - SCHEMA
+    - INPUT
+    - OUTPUT
+    - BENCHMARKS
+    - EXAMPLE
+
+- `Pedersen(n)`
+
+    - DESCRIPTION
+    - SCHEMA
+    - INPUT
+    - OUTPUT
+    - BENCHMARKS
+    - EXAMPLE
+
+### pointbits
+
+- `sqrt(n)`
+
+    - DESCRIPTION
+    - SCHEMA
+    - INPUT
+    - OUTPUT
+    - BENCHMARKS
+    - EXAMPLE
+
+- `Bits2Point()`
+
+    - DESCRIPTION
+    - SCHEMA
+    - INPUT
+    - OUTPUT
+    - BENCHMARKS
+    - EXAMPLE
+
+- `Bits2Point_Strict()`
+
+    - DESCRIPTION
+    - SCHEMA
+    - INPUT
+    - OUTPUT
+    - BENCHMARKS
+    - EXAMPLE
+
+- `Point2Bits`
+
+    - DESCRIPTION
+    - SCHEMA
+    - INPUT
+    - OUTPUT
+    - BENCHMARKS
+    - EXAMPLE
+
+- `Point2Bits_Strict`
+
+    - DESCRIPTION
+    - SCHEMA
+    - INPUT
+    - OUTPUT
+    - BENCHMARKS
+    - EXAMPLE
+
+### poseidon
+
+Implementation of Poseidon hash function (LINK)
+
+- `Sigma()`
+
+    - DESCRIPTION
+    - SCHEMA
+    - INPUT
+    - OUTPUT
+    - BENCHMARKS
+    - EXAMPLE
+
+- `Ark(t, C, r)`
+
+    - DESCRIPTION
+    - SCHEMA
+    - INPUT
+    - OUTPUT
+    - BENCHMARKS
+    - EXAMPLE
+
+- `Mix(t, M)`
+
+    - DESCRIPTION
+    - SCHEMA
+    - INPUT
+    - OUTPUT
+    - BENCHMARKS
+    - EXAMPLE
+
+- `Poseidon(nInputs)`
+
+    - DESCRIPTION
+    - SCHEMA
+    - INPUT
+    - OUTPUT
+    - BENCHMARKS
+    - EXAMPLE
+
+### sign
+
+- `Sign()`
+
+    - DESCRIPTION
+    - SCHEMA
+    - INPUT
+    - OUTPUT
+    - BENCHMARKS
+    - EXAMPLE
+
+### switcher
+
+- `Switcher()`
+
+    - DESCRIPTION
+    - SCHEMA
+    - INPUT
+    - OUTPUT
+    - BENCHMARKS
+    - EXAMPLE

circuits/babyjub.circom

@@ -87,7 +87,7 @@ template BabyPbk() {
     signal         output Ax;
     signal         output Ay;
 
-    var BASE8 = [
+    var BASE8[2] = [
         5299619240641551281634865583518297030282874472190772894086521144482721001553,
         16950150798460657717958625567821834550301663161624707787222815936182638968203
     ];

circuits/binsub.circom

@@ -48,12 +48,14 @@ template BinSub(n) {
     var lin = 2**n;
     var lout = 0;
 
-    for (var i=0; i<n; i++) {
+    var i;
+
+    for (i=0; i<n; i++) {
         lin = lin + in[0][i]*(2**i);
         lin = lin - in[1][i]*(2**i);
     }
 
-    for (var i=0; i<n; i++) {
+    for (i=0; i<n; i++) {
         out[i] <-- (lin >> i) & 1;
 
         // Ensure out is binary

circuits/binsum.circom

@@ -72,19 +72,26 @@ template BinSum(n, ops) {
     var k;
     var j;
 
+    var e2;
+
+    e2 = 1;
     for (k=0; k<n; k++) {
         for (j=0; j<ops; j++) {
-            lin += in[j][k] * 2**k;
+            lin += in[j][k] * e2;
         }
+        e2 = e2 + e2;
     }
 
+    e2 = 1;
     for (k=0; k<nout; k++) {
         out[k] <-- (lin >> k) & 1;
 
         // Ensure out is binary
         out[k] * (out[k] - 1) === 0;
 
-        lout += out[k] * 2**k;
+        lout += out[k] * e2;
+
+        e2 = e2+e2;
     }
 
     // Ensure the sum;

circuits/bitify.circom

@@ -26,10 +26,12 @@ template Num2Bits(n) {
     signal output out[n];
     var lc1=0;
 
+    var e2=1;
     for (var i = 0; i<n; i++) {
         out[i] <-- (in >> i) & 1;
         out[i] * (out[i] -1 ) === 0;
-        lc1 += out[i] * 2**i;
+        lc1 += out[i] * e2;
+        e2 = e2+e2;
     }
 
     lc1 === in;
@@ -54,8 +56,10 @@ template Bits2Num(n) {
     signal output out;
     var lc1=0;
 
+    var e2 = 1;
     for (var i = 0; i<n; i++) {
-        lc1 += in[i] * 2**i;
+        lc1 += in[i] * e2;
+        e2 = e2 + e2;
     }
 
     lc1 ==> out;

circuits/comparators.circom

@@ -86,10 +86,11 @@ template LessThan(n) {
 */
 
 template LessThan(n) {
+    assert(n <= 252);
     signal input in[2];
     signal output out;
 
-    component n2b = Num2Bits(n*2+1);
+    component n2b = Num2Bits(n+1);
 
     n2b.in <== in[0]+ (1<<n) - in[1];
 

circuits/compconstant.circom

@@ -46,12 +46,11 @@ template CompConstant(ct) {
         slsb = in[i*2];
         smsb = in[i*2+1];
 
-
-        if ((cmsb==0)&(clsb==0)) {
+        if ((cmsb==0)&&(clsb==0)) {
             parts[i] <== -b*smsb*slsb + b*smsb + b*slsb;
-        } else if ((cmsb==0)&(clsb==1)) {
+        } else if ((cmsb==0)&&(clsb==1)) {
             parts[i] <== a*smsb*slsb - a*slsb + b*smsb - a*smsb + a;
-        } else if ((cmsb==1)&(clsb==0)) {
+        } else if ((cmsb==1)&&(clsb==0)) {
             parts[i] <== b*smsb*slsb - a*smsb + a;
         } else {
             parts[i] <== -a*smsb*slsb + a;

circuits/eddsa.circom

@@ -122,7 +122,7 @@ template EdDSAVerifier(n) {
 
 // Calculate left side of equation left = S*B8
 
-    var BASE8 = [
+    var BASE8[2] = [
         5299619240641551281634865583518297030282874472190772894086521144482721001553,
         16950150798460657717958625567821834550301663161624707787222815936182638968203
     ];

circuits/eddsamimc.circom

@@ -100,7 +100,7 @@ template EdDSAMiMCVerifier() {
 
 // Calculate left side of equation left = S*B8
 
-    var BASE8 = [
+    var BASE8[2] = [
         5299619240641551281634865583518297030282874472190772894086521144482721001553,
         16950150798460657717958625567821834550301663161624707787222815936182638968203
     ];

circuits/eddsamimcsponge.circom

@@ -100,7 +100,7 @@ template EdDSAMiMCSpongeVerifier() {
 
 // Calculate left side of equation left = S*B8
 
-    var BASE8 = [
+    var BASE8[2] = [
         5299619240641551281634865583518297030282874472190772894086521144482721001553,
         16950150798460657717958625567821834550301663161624707787222815936182638968203
     ];

circuits/eddsaposeidon.circom

@@ -47,11 +47,11 @@ template EdDSAPoseidonVerifier() {
         snum2bits.out[i] ==> compConstant.in[i];
     }
     compConstant.in[253] <== 0;
-    compConstant.out === 0;
+    compConstant.out*enabled === 0;
 
 // Calculate the h = H(R,A, msg)
 
-    component hash = Poseidon(5, 6, 8, 57);
+    component hash = Poseidon(5);
 
     hash.inputs[0] <== R8x;
     hash.inputs[1] <== R8y;
@@ -79,7 +79,7 @@ template EdDSAPoseidonVerifier() {
     // We check that A is not zero.
     component isZero = IsZero();
     isZero.in <== dbl3.x;
-    isZero.out === 0;
+    isZero.out*enabled === 0;
 
     component mulAny = EscalarMulAny(254);
     for (i=0; i<254; i++) {
@@ -99,7 +99,7 @@ template EdDSAPoseidonVerifier() {
 
 // Calculate left side of equation left = S*B8
 
-    var BASE8 = [
+    var BASE8[2] = [
         5299619240641551281634865583518297030282874472190772894086521144482721001553,
         16950150798460657717958625567821834550301663161624707787222815936182638968203
     ];

circuits/escalarmul.circom

@@ -71,7 +71,7 @@ template EscalarMulWindow(base, k) {
     signal input sel[4];
     signal output out[2];
 
-    component table;
+    var table[16][2];
     component mux;
     component adder;
 
@@ -86,8 +86,8 @@ template EscalarMulWindow(base, k) {
     }
 
     for (i=0; i<16; i++) {
-        table.out[i][0] ==> mux.c[0][i];
-        table.out[i][1] ==> mux.c[1][i];
+        mux.c[0][i] <== table[i][0];
+        mux.c[1][i] <== table[i][1];
     }
 
     in[0] ==> adder.x1;

circuits/escalarmulfix.circom

@@ -176,6 +176,9 @@ template SegmentMulFix(nWindows) {
             cadders[i].in1[0] <== cadders[i-1].out[0];
             cadders[i].in1[1] <== cadders[i-1].out[1];
         }
+        for (j=0; j<3; j++) {
+            windows[i].in[j] <== e[3*i+j];
+        }
         if (i<nWindows-1) {
             cadders[i].in2[0] <== windows[i].out8[0];
             cadders[i].in2[1] <== windows[i].out8[1];
@@ -185,9 +188,6 @@ template SegmentMulFix(nWindows) {
             cadders[i].in2[0] <== dblLast.out[0];
             cadders[i].in2[1] <== dblLast.out[1];
         }
-        for (j=0; j<3; j++) {
-            windows[i].in[j] <== e[3*i+j];
-        }
     }
 
     for (i=0; i<nWindows; i++) {

circuits/escalarmulw4table.circom

@@ -27,23 +27,25 @@ function pointAdd(x1,y1,x2,y2) {
     return res;
 }
 
-template EscalarMulW4Table(base, k) {
-    signal output out[16][2];
+function EscalarMulW4Table(base, k) {
+    var out[16][2];
 
     var i;
     var p[2];
 
-    var dbl = base;
+    var dbl[2] = base;
 
     for (i=0; i<k*4; i++) {
         dbl = pointAdd(dbl[0], dbl[1], dbl[0], dbl[1]);
     }
 
-    out[0][0] <== 0;
-    out[0][1] <== 1;
+    out[0][0] = 0;
+    out[0][1] = 1;
     for (i=1; i<16; i++) {
         p = pointAdd(out[i-1][0], out[i-1][1], dbl[0], dbl[1]);
-        out[i][0] <== p[0];
-        out[i][1] <== p[1];
+        out[i][0] = p[0];
+        out[i][1] = p[1];
     }
+
+    return out;
 }

circuits/gates.circom

@@ -67,6 +67,7 @@ template NOR() {
 template MultiAND(n) {
     signal input in[n];
     signal output out;
+    var i;
     if (n==1) {
         out <== in[0];
     } else if (n==2) {
@@ -81,8 +82,8 @@ template MultiAND(n) {
         var n2 = n-n\2;
         ands[0] = MultiAND(n1);
         ands[1] = MultiAND(n2);
-        for (var i=0; i<n1; i++) ands[0].in[i] <== in[i];
-        for (var i=0; i<n2; i++) ands[1].in[i] <== in[n1+i];
+        for (i=0; i<n1; i++) ands[0].in[i] <== in[i];
+        for (i=0; i<n2; i++) ands[1].in[i] <== in[n1+i];
         and2.a <== ands[0].out;
         and2.b <== ands[1].out;
         out <== and2.out;

circuits/mimc.circom

@@ -22,7 +22,7 @@ template MiMC7(nrounds) {
     signal input k;
     signal output out;
 
-    var c = [
+    var c[91] = [
         0,
         20888961410941983456478427210666206549300505294776164667214940546594746570981,
         15265126113435022738560151911929040668591755459209400716467504685752745317193,

circuits/mimcsponge.circom

@@ -6,10 +6,12 @@ template MiMCSponge(nInputs, nRounds, nOutputs) {
   signal input k;
   signal output outs[nOutputs];
 
+  var i;
+
   // S = R||C
   component S[nInputs + nOutputs - 1];
 
-  for (var i = 0; i < nInputs; i++) {
+  for (i = 0; i < nInputs; i++) {
     S[i] = MiMCFeistel(nRounds);
     S[i].k <== k;
     if (i == 0) {
@@ -21,9 +23,9 @@ template MiMCSponge(nInputs, nRounds, nOutputs) {
     }
   }
 
-  outs[0] = S[nInputs - 1].xL_out;
+  outs[0] <== S[nInputs - 1].xL_out;
 
-  for (var i = 0; i < nOutputs - 1; i++) {
+  for (i = 0; i < nOutputs - 1; i++) {
     S[nInputs + i] = MiMCFeistel(nRounds);
     S[nInputs + i].k <== k;
     S[nInputs + i].xL_in <== S[nInputs + i - 1].xL_out;
@@ -39,8 +41,8 @@ template MiMCFeistel(nrounds) {
     signal output xL_out;
     signal output xR_out;
 
-    var c = [
-      0,
+    // doesn't contain the first and last round constants, which are always zero
+    var c_partial[218] = [
       7120861356467848435263064379192047478074060781135320967663101236819528304084,
       5024705281721889198577876690145313457398658950011302225525409148828000436681,
       17980351014018068290387269214713820287804403312720763401943303895585469787384,
@@ -258,8 +260,7 @@ template MiMCFeistel(nrounds) {
       18224457394066545825553407391290108485121649197258948320896164404518684305122,
       274945154732293792784580363548970818611304339008964723447672490026510689427,
       11050822248291117548220126630860474473945266276626263036056336623671308219529,
-      2119542016932434047340813757208803962484943912710204325088879681995922344971,
-      0
+      2119542016932434047340813757208803962484943912710204325088879681995922344971
     ];
 
     var t;
@@ -268,13 +269,19 @@ template MiMCFeistel(nrounds) {
     signal xL[nrounds-1];
     signal xR[nrounds-1];
 
+    var c;
     for (var i=0; i<nrounds; i++) {
-        t = (i==0) ? k+xL_in : k + xL[i-1] + c[i];
+        if ((i == 0) || (i == nrounds - 1)) {
+          c = 0;
+        } else {
+          c = c_partial[i - 1];
+        }
+        t = (i==0) ? k+xL_in : k + xL[i-1] + c;
         t2[i] <== t*t;
         t4[i] <== t2[i]*t2[i];
         if (i<nrounds-1) {
           xL[i] <== ((i==0) ? xR_in : xR[i-1]) + t4[i]*t;
-          xR[i] = (i==0) ? xL_in : xL[i-1];
+          xR[i] <== (i==0) ? xL_in : xL[i-1];
         } else {
           xR_out <== xR[i-1] + t4[i]*t;
           xL_out <== xL[i-1];

circuits/pedersen.circom

@@ -128,6 +128,9 @@ template Segment(nWindows) {
     component adders[nWindows-1];
     for (i=0; i<nWindows; i++) {
         windows[i] = Window4();
+        for (j=0; j<4; j++) {
+            windows[i].in[j] <== in[4*i+j];
+        }
         if (i==0) {
             windows[i].base[0] <== e2m.out[0];
             windows[i].base[1] <== e2m.out[1];
@@ -153,9 +156,6 @@ template Segment(nWindows) {
             adders[i-1].in2[0] <== windows[i].out[0];
             adders[i-1].in2[1] <== windows[i].out[1];
         }
-        for (j=0; j<4; j++) {
-            windows[i].in[j] <== in[4*i+j];
-        }
     }
 
     component m2e = Montgomery2Edwards();
@@ -176,7 +176,7 @@ template Pedersen(n) {
     signal input in[n];
     signal output out[2];
 
-    var BASE = [
+    var BASE[10][2] = [
         [10457101036533406547632367118273992217979173478358440826365724437999023779287,19824078218392094440610104313265183977899662750282163392862422243483260492317],
         [2671756056509184035029146175565761955751135805354291559563293617232983272177,2663205510731142763556352975002641716101654201788071096152948830924149045094],
         [5802099305472655231388284418920769829666717045250560929368476121199858275951,5980429700218124965372158798884772646841287887664001482443826541541529227896],
@@ -187,7 +187,8 @@ template Pedersen(n) {
         [6814338563135591367010655964669793483652536871717891893032616415581401894627,13660303521961041205824633772157003587453809761793065294055279768121314853695],
         [3571615583211663069428808372184817973703476260057504149923239576077102575715,11981351099832644138306422070127357074117642951423551606012551622164230222506],
         [18597552580465440374022635246985743886550544261632147935254624835147509493269,6753322320275422086923032033899357299485124665258735666995435957890214041481]
-    ]
+
+    ];
 
     var nSegments = ((n-1)\200)+1;
 

circuits/pedersen_old.circom

@@ -28,7 +28,7 @@ template Pedersen(n) {
 
     component escalarMuls[nexps];
 
-    var PBASE = [
+    var PBASE[10][2] = [
         [10457101036533406547632367118273992217979173478358440826365724437999023779287,19824078218392094440610104313265183977899662750282163392862422243483260492317],
         [2671756056509184035029146175565761955751135805354291559563293617232983272177,2663205510731142763556352975002641716101654201788071096152948830924149045094],
         [5802099305472655231388284418920769829666717045250560929368476121199858275951,5980429700218124965372158798884772646841287887664001482443826541541529227896],
@@ -39,6 +39,7 @@ template Pedersen(n) {
         [6814338563135591367010655964669793483652536871717891893032616415581401894627,13660303521961041205824633772157003587453809761793065294055279768121314853695],
         [3571615583211663069428808372184817973703476260057504149923239576077102575715,11981351099832644138306422070127357074117642951423551606012551622164230222506],
         [18597552580465440374022635246985743886550544261632147935254624835147509493269,6753322320275422086923032033899357299485124665258735666995435957890214041481]
+
     ];
 
     var i;

circuits/pointbits.circom

@@ -61,7 +61,7 @@ function sqrt(n) {
         r = r*b;
     }
 
-    if (r > ((-1) >> 1)) {
+    if (r < 0 ) {
         r = -r;
     }
 

circuits/poseidon.circom

@@ -1,3 +1,4 @@
+include "./poseidon_constants.circom";
 
 template Sigma() {
     signal input in;
@@ -12,163 +13,52 @@ template Sigma() {
     out <== in4*in;
 }
 
-template Ark(t, C) {
+template Ark(t, C, r) {
     signal input in[t];
     signal output out[t];
+
     for (var i=0; i<t; i++) {
-        out[i] <== in[i] + C;
+        out[i] <== in[i] + C[i + r];
     }
 }
 
 template Mix(t, M) {
     signal input in[t];
     signal output out[t];
-    var lc;
 
+    var lc;
     for (var i=0; i<t; i++) {
         lc = 0;
         for (var j=0; j<t; j++) {
-            lc = lc + M[i][j]*in[j];
+            lc += M[j][i]*in[j];
         }
         out[i] <== lc;
     }
 }
 
-//    var nRoundsF = 8;
-//    var nRoundsP = 57;
-//    var t = 6;
-
-template Poseidon(nInputs, t, nRoundsF, nRoundsP) {
-
-    var C = [
-        14397397413755236225575615486459253198602422701513067526754101844196324375522,
-        10405129301473404666785234951972711717481302463898292859783056520670200613128,
-        5179144822360023508491245509308555580251733042407187134628755730783052214509,
-        9132640374240188374542843306219594180154739721841249568925550236430986592615,
-        20360807315276763881209958738450444293273549928693737723235350358403012458514,
-        17933600965499023212689924809448543050840131883187652471064418452962948061619,
-        3636213416533737411392076250708419981662897009810345015164671602334517041153,
-        2008540005368330234524962342006691994500273283000229509835662097352946198608,
-        16018407964853379535338740313053768402596521780991140819786560130595652651567,
-        20653139667070586705378398435856186172195806027708437373983929336015162186471,
-        17887713874711369695406927657694993484804203950786446055999405564652412116765,
-        4852706232225925756777361208698488277369799648067343227630786518486608711772,
-        8969172011633935669771678412400911310465619639756845342775631896478908389850,
-        20570199545627577691240476121888846460936245025392381957866134167601058684375,
-        16442329894745639881165035015179028112772410105963688121820543219662832524136,
-        20060625627350485876280451423010593928172611031611836167979515653463693899374,
-        16637282689940520290130302519163090147511023430395200895953984829546679599107,
-        15599196921909732993082127725908821049411366914683565306060493533569088698214,
-        16894591341213863947423904025624185991098788054337051624251730868231322135455,
-        1197934381747032348421303489683932612752526046745577259575778515005162320212,
-        6172482022646932735745595886795230725225293469762393889050804649558459236626,
-        21004037394166516054140386756510609698837211370585899203851827276330669555417,
-        15262034989144652068456967541137853724140836132717012646544737680069032573006,
-        15017690682054366744270630371095785995296470601172793770224691982518041139766,
-        15159744167842240513848638419303545693472533086570469712794583342699782519832,
-        11178069035565459212220861899558526502477231302924961773582350246646450941231,
-        21154888769130549957415912997229564077486639529994598560737238811887296922114,
-        20162517328110570500010831422938033120419484532231241180224283481905744633719,
-        2777362604871784250419758188173029886707024739806641263170345377816177052018,
-        15732290486829619144634131656503993123618032247178179298922551820261215487562,
-        6024433414579583476444635447152826813568595303270846875177844482142230009826,
-        17677827682004946431939402157761289497221048154630238117709539216286149983245,
-        10716307389353583413755237303156291454109852751296156900963208377067748518748,
-        14925386988604173087143546225719076187055229908444910452781922028996524347508,
-        8940878636401797005293482068100797531020505636124892198091491586778667442523,
-        18911747154199663060505302806894425160044925686870165583944475880789706164410,
-        8821532432394939099312235292271438180996556457308429936910969094255825456935,
-        20632576502437623790366878538516326728436616723089049415538037018093616927643,
-        71447649211767888770311304010816315780740050029903404046389165015534756512,
-        2781996465394730190470582631099299305677291329609718650018200531245670229393,
-        12441376330954323535872906380510501637773629931719508864016287320488688345525,
-        2558302139544901035700544058046419714227464650146159803703499681139469546006,
-        10087036781939179132584550273563255199577525914374285705149349445480649057058,
-        4267692623754666261749551533667592242661271409704769363166965280715887854739,
-        4945579503584457514844595640661884835097077318604083061152997449742124905548,
-        17742335354489274412669987990603079185096280484072783973732137326144230832311,
-        6266270088302506215402996795500854910256503071464802875821837403486057988208,
-        2716062168542520412498610856550519519760063668165561277991771577403400784706,
-        19118392018538203167410421493487769944462015419023083813301166096764262134232,
-        9386595745626044000666050847309903206827901310677406022353307960932745699524,
-        9121640807890366356465620448383131419933298563527245687958865317869840082266,
-        3078975275808111706229899605611544294904276390490742680006005661017864583210,
-        7157404299437167354719786626667769956233708887934477609633504801472827442743,
-        14056248655941725362944552761799461694550787028230120190862133165195793034373,
-        14124396743304355958915937804966111851843703158171757752158388556919187839849,
-        11851254356749068692552943732920045260402277343008629727465773766468466181076,
-        9799099446406796696742256539758943483211846559715874347178722060519817626047,
-        10156146186214948683880719664738535455146137901666656566575307300522957959544,
-        19908645952733301583346063785055921934459499091029406575311417879963332475861,
-        11766105336238068471342414351862472329437473380853789942065610694000443387471,
-        11002137593249972174092192767251572171769044073555430468487809799220351297047,
-        284136377911685911941431040940403846843630064858778505937392780738953624163,
-        19448733709802908339787967270452055364068697565906862913410983275341804035680,
-        14423660424692802524250720264041003098290275890428483723270346403986712981505,
-        10635360132728137321700090133109897687122647659471659996419791842933639708516
-    ];
-
-    var M = [
-        [
-            19167410339349846567561662441069598364702008768579734801591448511131028229281,
-            14183033936038168803360723133013092560869148726790180682363054735190196956789,
-            9067734253445064890734144122526450279189023719890032859456830213166173619761,
-            16378664841697311562845443097199265623838619398287411428110917414833007677155,
-            12968540216479938138647596899147650021419273189336843725176422194136033835172,
-            3636162562566338420490575570584278737093584021456168183289112789616069756675
-        ],[
-            17034139127218860091985397764514160131253018178110701196935786874261236172431,
-            2799255644797227968811798608332314218966179365168250111693473252876996230317,
-            2482058150180648511543788012634934806465808146786082148795902594096349483974,
-            16563522740626180338295201738437974404892092704059676533096069531044355099628,
-            10468644849657689537028565510142839489302836569811003546969773105463051947124,
-            3328913364598498171733622353010907641674136720305714432354138807013088636408
-        ],[
-            18985203040268814769637347880759846911264240088034262814847924884273017355969,
-            8652975463545710606098548415650457376967119951977109072274595329619335974180,
-            970943815872417895015626519859542525373809485973005165410533315057253476903,
-            19406667490568134101658669326517700199745817783746545889094238643063688871948,
-            17049854690034965250221386317058877242629221002521630573756355118745574274967,
-            4964394613021008685803675656098849539153699842663541444414978877928878266244
-        ],[
-            19025623051770008118343718096455821045904242602531062247152770448380880817517,
-            9077319817220936628089890431129759976815127354480867310384708941479362824016,
-            4770370314098695913091200576539533727214143013236894216582648993741910829490,
-            4298564056297802123194408918029088169104276109138370115401819933600955259473,
-            6905514380186323693285869145872115273350947784558995755916362330070690839131,
-            4783343257810358393326889022942241108539824540285247795235499223017138301952
-        ],[
-            16205238342129310687768799056463408647672389183328001070715567975181364448609,
-            8303849270045876854140023508764676765932043944545416856530551331270859502246,
-            20218246699596954048529384569730026273241102596326201163062133863539137060414,
-            1712845821388089905746651754894206522004527237615042226559791118162382909269,
-            13001155522144542028910638547179410124467185319212645031214919884423841839406,
-            16037892369576300958623292723740289861626299352695838577330319504984091062115
-        ],[
-            15162889384227198851506890526431746552868519326873025085114621698588781611738,
-            13272957914179340594010910867091459756043436017766464331915862093201960540910,
-            9416416589114508529880440146952102328470363729880726115521103179442988482948,
-            8035240799672199706102747147502951589635001418759394863664434079699838251138,
-            21642389080762222565487157652540372010968704000567605990102641816691459811717,
-            20261355950827657195644012399234591122288573679402601053407151083849785332516
-        ]
-    ];
-
-
+template Poseidon(nInputs) {
     signal input inputs[nInputs];
     signal output out;
 
-    component ark[nRoundsF + nRoundsP];
-    component sigmaF[nRoundsF][t];
+    // Using recommended parameters from whitepaper https://eprint.iacr.org/2019/458.pdf (table 2, table 8)
+    // Generated by https://extgit.iaik.tugraz.at/krypto/hadeshash/-/blob/master/code/calc_round_numbers.py
+    // And rounded up to nearest integer that divides by t
+    var N_ROUNDS_P[8] = [56, 57, 56, 60, 60, 63, 64, 63];
+    var t = nInputs + 1;
+    var nRoundsF = 8;
+    var nRoundsP = N_ROUNDS_P[t - 2];
+    var C[t*(nRoundsF + nRoundsP)] = POSEIDON_C(t);
+    var M[t][t] = POSEIDON_M(t);
+
+    component ark[nRoundsF + nRoundsP - 1];
+    component sigmaF[nRoundsF - 1][t];
     component sigmaP[nRoundsP];
-    component mix[nRoundsF + nRoundsP];
+    component mix[nRoundsF + nRoundsP - 1];
 
     var k;
 
-    for (var i=0; i<(nRoundsF + nRoundsP); i++) {
-        ark[i] = Ark(t, C[i]);
-        mix[i] = Mix(t, M);
-
+    for (var i=0; i<nRoundsF + nRoundsP - 1; i++) {
+        ark[i] = Ark(t, C, t*i);
         for (var j=0; j<t; j++) {
             if (i==0) {
                 if (j<nInputs) {
@@ -181,8 +71,9 @@ template Poseidon(nInputs, t, nRoundsF, nRoundsP) {
             }
         }
 
-        if ((i<(nRoundsF/2)) || (i>= (nRoundsP + nRoundsF/2))) {
-            k= i<nRoundsF/2 ? i : (i-nRoundsP);
+        if (i < nRoundsF/2 || i >= nRoundsP + nRoundsF/2) {
+            k = i < nRoundsF/2 ? i : i - nRoundsP;
+            mix[i] = Mix(t, M);
             for (var j=0; j<t; j++) {
                 sigmaF[k][j] = Sigma();
                 sigmaF[k][j].in <== ark[i].out[j];
@@ -190,6 +81,7 @@ template Poseidon(nInputs, t, nRoundsF, nRoundsP) {
             }
         } else {
             k = i - nRoundsF/2;
+            mix[i] = Mix(t, M);
             sigmaP[k] = Sigma();
             sigmaP[k].in <== ark[i].out[0];
             mix[i].in[0] <== sigmaP[k].out;
@@ -199,5 +91,8 @@ template Poseidon(nInputs, t, nRoundsF, nRoundsP) {
         }
     }
 
-    out <== mix[nRoundsF + nRoundsP -1].out[0];
+    // last round is done only for the first word, so we do it manually to save constraints
+    component lastSigmaF = Sigma();
+    lastSigmaF.in <== mix[nRoundsF + nRoundsP - 2].out[0] + C[t*(nRoundsF + nRoundsP - 1)];
+    out <== lastSigmaF.out;
 }

circuits/sha256/constants.circom

@@ -19,7 +19,7 @@
 
 template H(x) {
     signal output out[32];
-    var c = [0x6a09e667,
+    var c[8] = [0x6a09e667,
              0xbb67ae85,
              0x3c6ef372,
              0xa54ff53a,
@@ -35,7 +35,7 @@ template H(x) {
 
 template K(x) {
     signal output out[32];
-    var c = [
+    var c[64] = [
         0x428a2f98, 0x71374491, 0xb5c0fbcf, 0xe9b5dba5, 0x3956c25b, 0x59f111f1, 0x923f82a4, 0xab1c5ed5,
         0xd807aa98, 0x12835b01, 0x243185be, 0x550c7dc3, 0x72be5d74, 0x80deb1fe, 0x9bdc06a7, 0xc19bf174,
         0xe49b69c1, 0xefbe4786, 0x0fc19dc6, 0x240ca1cc, 0x2de92c6f, 0x4a7484aa, 0x5cb0a9dc, 0x76f988da,

circuits/sha256/sha256compression.circom

@@ -22,6 +22,8 @@ include "t1.circom";
 include "t2.circom";
 include "../binsum.circom";
 include "sigmaplus.circom";
+include "sha256compression_function.circom";
+
 
 template Sha256compression() {
     signal input hin[256];
@@ -37,7 +39,11 @@ template Sha256compression() {
     signal h[65][32];
     signal w[64][32];
 
+
+    var outCalc[256] = sha256compression(hin, inp);
+
     var i;
+    for (i=0; i<256; i++) out[i] <-- outCalc[i];
 
     component sigmaPlus[48];
     for (i=0; i<48; i++) sigmaPlus[i] = SigmaPlus();
@@ -74,6 +80,9 @@ template Sha256compression() {
                 sigmaPlus[t-16].in7[k] <== w[t-7][k];
                 sigmaPlus[t-16].in15[k] <== w[t-15][k];
                 sigmaPlus[t-16].in16[k] <== w[t-16][k];
+            }
+
+            for (k=0; k<32; k++) {
                 w[t][k] <== sigmaPlus[t-16].out[k];
             }
         }
@@ -144,13 +153,13 @@ template Sha256compression() {
     }
 
     for (k=0; k<32; k++) {
-        out[31-k]     <== fsum[0].out[k];
-        out[32+31-k]  <== fsum[1].out[k];
-        out[64+31-k]  <== fsum[2].out[k];
-        out[96+31-k]  <== fsum[3].out[k];
-        out[128+31-k] <== fsum[4].out[k];
-        out[160+31-k] <== fsum[5].out[k];
-        out[192+31-k] <== fsum[6].out[k];
-        out[224+31-k] <== fsum[7].out[k];
+        out[31-k]     === fsum[0].out[k];
+        out[32+31-k]  === fsum[1].out[k];
+        out[64+31-k]  === fsum[2].out[k];
+        out[96+31-k]  === fsum[3].out[k];
+        out[128+31-k] === fsum[4].out[k];
+        out[160+31-k] === fsum[5].out[k];
+        out[192+31-k] === fsum[6].out[k];
+        out[224+31-k] === fsum[7].out[k];
     }
 }

circuits/sha256/sha256compression_function.circom

@@ -0,0 +1,112 @@
+//    signal input hin[256];
+//    signal input inp[512];
+//    signal output out[256];
+
+
+function rrot(x, n) {
+    return ((x >> n) | (x << (32-n))) & 0xFFFFFFFF;
+}
+
+function bsigma0(x) {
+    return rrot(x,2) ^ rrot(x,13) ^ rrot(x,22);
+}
+
+function bsigma1(x) {
+    return rrot(x,6) ^ rrot(x,11) ^ rrot(x,25);
+}
+
+function ssigma0(x) {
+    return rrot(x,7) ^ rrot(x,18) ^ (x >> 3);
+}
+
+function ssigma1(x) {
+    return rrot(x,17) ^ rrot(x,19) ^ (x >> 10);
+}
+
+function Maj(x, y, z) {
+    return (x&y) ^ (x&z) ^ (y&z);
+}
+
+function Ch(x, y, z) {
+    return (x & y) ^ ((0xFFFFFFFF ^x) & z);
+}
+
+function sha256K(i) {
+    var k[64] = [
+        0x428a2f98, 0x71374491, 0xb5c0fbcf, 0xe9b5dba5, 0x3956c25b, 0x59f111f1, 0x923f82a4, 0xab1c5ed5,
+        0xd807aa98, 0x12835b01, 0x243185be, 0x550c7dc3, 0x72be5d74, 0x80deb1fe, 0x9bdc06a7, 0xc19bf174,
+        0xe49b69c1, 0xefbe4786, 0x0fc19dc6, 0x240ca1cc, 0x2de92c6f, 0x4a7484aa, 0x5cb0a9dc, 0x76f988da,
+        0x983e5152, 0xa831c66d, 0xb00327c8, 0xbf597fc7, 0xc6e00bf3, 0xd5a79147, 0x06ca6351, 0x14292967,
+        0x27b70a85, 0x2e1b2138, 0x4d2c6dfc, 0x53380d13, 0x650a7354, 0x766a0abb, 0x81c2c92e, 0x92722c85,
+        0xa2bfe8a1, 0xa81a664b, 0xc24b8b70, 0xc76c51a3, 0xd192e819, 0xd6990624, 0xf40e3585, 0x106aa070,
+        0x19a4c116, 0x1e376c08, 0x2748774c, 0x34b0bcb5, 0x391c0cb3, 0x4ed8aa4a, 0x5b9cca4f, 0x682e6ff3,
+        0x748f82ee, 0x78a5636f, 0x84c87814, 0x8cc70208, 0x90befffa, 0xa4506ceb, 0xbef9a3f7, 0xc67178f2
+    ];
+    return k[i];
+}
+
+function sha256compression(hin, inp) {
+    var H[8];
+    var a;
+    var b;
+    var c;
+    var d;
+    var e;
+    var f;
+    var g;
+    var h;
+    var out[256];
+    for (var i=0; i<8; i++) {
+        H[i] = 0;
+        for (var j=0; j<32; j++) {
+            H[i] += hin[i*32+j] << j;
+        }
+    }
+    a=H[0];
+    b=H[1];
+    c=H[2];
+    d=H[3];
+    e=H[4];
+    f=H[5];
+    g=H[6];
+    h=H[7];
+    var w[64];
+    var T1;
+    var T2;
+    for (var i=0; i<64; i++) {
+        if (i<16) {
+            w[i]=0;
+            for (var j=0; j<32; j++) {
+                w[i] +=  inp[i*32+31-j]<<j;
+            }
+        } else {
+            w[i] = (ssigma1(w[i-2]) + w[i-7] + ssigma0(w[i-15]) + w[i-16]) & 0xFFFFFFFF;
+        }
+        T1 = (h + bsigma1(e) + Ch(e,f,g) + sha256K(i) + w[i]) & 0xFFFFFFFF;
+        T2 = (bsigma0(a) + Maj(a,b,c)) & 0xFFFFFFFF;
+
+        h=g;
+        g=f;
+        f=e;
+        e=(d+T1) & 0xFFFFFFFF;
+        d=c;
+        c=b;
+        b=a;
+        a=(T1+T2) & 0xFFFFFFFF;
+
+    }
+    H[0] = H[0] + a;
+    H[1] = H[1] + b;
+    H[2] = H[2] + c;
+    H[3] = H[3] + d;
+    H[4] = H[4] + e;
+    H[5] = H[5] + f;
+    H[6] = H[6] + g;
+    H[7] = H[7] + h;
+    for (var i=0; i<8; i++) {
+        for (var j=0; j<32; j++) {
+            out[i*32+31-j] = (H[i] >> j) & 1;
+        }
+    }
+    return out;
+}

circuits/sha256/sigma.circom

@@ -24,22 +24,26 @@ include "shift.circom";
 template SmallSigma(ra, rb, rc) {
     signal input in[32];
     signal output out[32];
-
-    component xor3 = Xor3(32);
+    var k;
 
     component rota = RotR(32, ra);
     component rotb = RotR(32, rb);
     component shrc = ShR(32, rc);
 
-    for (var k=0; k<32; k++) {
+    for (k=0; k<32; k++) {
         rota.in[k] <== in[k];
         rotb.in[k] <== in[k];
         shrc.in[k] <== in[k];
+    }
 
+    component xor3 = Xor3(32);
+    for (k=0; k<32; k++) {
         xor3.a[k] <== rota.out[k];
         xor3.b[k] <== rotb.out[k];
         xor3.c[k] <== shrc.out[k];
+    }
 
+    for (k=0; k<32; k++) {
         out[k] <== xor3.out[k];
     }
 }
@@ -47,22 +51,26 @@ template SmallSigma(ra, rb, rc) {
 template BigSigma(ra, rb, rc) {
     signal input in[32];
     signal output out[32];
-
-    component xor3 = Xor3(32);
+    var k;
 
     component rota = RotR(32, ra);
     component rotb = RotR(32, rb);
     component rotc = RotR(32, rc);
-
-    for (var k=0; k<32; k++) {
+    for (k=0; k<32; k++) {
         rota.in[k] <== in[k];
         rotb.in[k] <== in[k];
         rotc.in[k] <== in[k];
+    }
 
+    component xor3 = Xor3(32);
+
+    for (k=0; k<32; k++) {
         xor3.a[k] <== rota.out[k];
         xor3.b[k] <== rotb.out[k];
         xor3.c[k] <== rotc.out[k];
+    }
 
+    for (k=0; k<32; k++) {
         out[k] <== xor3.out[k];
     }
 }

circuits/sha256/sigmaplus.circom

@@ -26,20 +26,24 @@ template SigmaPlus() {
     signal input in15[32];
     signal input in16[32];
     signal output out[32];
+    var k;
 
-    component sum = BinSum(32, 4);
     component sigma1 = SmallSigma(17,19,10);
     component sigma0 = SmallSigma(7, 18, 3);
-
-    for (var k=0; k<32; k++) {
+    for (k=0; k<32; k++) {
         sigma1.in[k] <== in2[k];
         sigma0.in[k] <== in15[k];
+    }
 
+    component sum = BinSum(32, 4);
+    for (k=0; k<32; k++) {
         sum.in[0][k] <== sigma1.out[k];
         sum.in[1][k] <== in7[k];
         sum.in[2][k] <== sigma0.out[k];
         sum.in[3][k] <== in16[k];
+    }
 
+    for (k=0; k<32; k++) {
         out[k] <== sum.out[k];
     }
 }

circuits/sha256/t1.circom

@@ -30,23 +30,28 @@ template T1() {
     signal input w[32];
     signal output out[32];
 
-    component sum = BinSum(32, 5);
-    component ch = Ch(32);
+    var ki;
 
+    component ch = Ch(32);
     component bigsigma1 = BigSigma(6, 11, 25);
 
-    for (var ki=0; ki<32; ki++) {
+    for (ki=0; ki<32; ki++) {
         bigsigma1.in[ki] <== e[ki];
         ch.a[ki] <== e[ki];
         ch.b[ki] <== f[ki];
-        ch.c[ki] <== g[ki]
+        ch.c[ki] <== g[ki];
+    }
 
+    component sum = BinSum(32, 5);
+    for (ki=0; ki<32; ki++) {
         sum.in[0][ki] <== h[ki];
         sum.in[1][ki] <== bigsigma1.out[ki];
         sum.in[2][ki] <== ch.out[ki];
         sum.in[3][ki] <== k[ki];
         sum.in[4][ki] <== w[ki];
+    }
 
+    for (ki=0; ki<32; ki++) {
         out[ki] <== sum.out[ki];
     }
 }

circuits/sha256/t2.circom

@@ -26,22 +26,25 @@ template T2() {
     signal input b[32];
     signal input c[32];
     signal output out[32];
-
-    component sum = BinSum(32, 2);
+    var k;
 
     component bigsigma0 = BigSigma(2, 13, 22);
     component maj = Maj(32);
-
-    for (var k=0; k<32; k++) {
-
+    for (k=0; k<32; k++) {
         bigsigma0.in[k] <== a[k];
         maj.a[k] <== a[k];
         maj.b[k] <== b[k];
         maj.c[k] <== c[k];
+    }
 
+    component sum = BinSum(32, 2);
+
+    for (k=0; k<32; k++) {
         sum.in[0][k] <== bigsigma0.out[k];
         sum.in[1][k] <== maj.out[k];
+    }
 
+    for (k=0; k<32; k++) {
         out[k] <== sum.out[k];
     }
 }

circuits/smt/smthash_poseidon.circom

@@ -29,7 +29,7 @@ template SMTHash1() {
     signal input value;
     signal output out;
 
-    component h = Poseidon(3, 6, 8, 57);   // Constant
+    component h = Poseidon(3);   // Constant
     h.inputs[0] <== key;
     h.inputs[1] <== value;
     h.inputs[2] <== 1;
@@ -48,7 +48,7 @@ template SMTHash2() {
     signal input R;
     signal output out;
 
-    component h = Poseidon(2, 6, 8, 57);   // Constant
+    component h = Poseidon(2);   // Constant
     h.inputs[0] <== L;
     h.inputs[1] <== R;
 

circuits/smt/smtlevins.circom

@@ -79,9 +79,11 @@ template SMTLevIns(nLevels) {
     signal output levIns[nLevels];
     signal done[nLevels-1];        // Indicates if the insLevel has aready been detected.
 
+    var i;
+
     component isZero[nLevels];
 
-    for (var i=0; i<nLevels; i++) {
+    for (i=0; i<nLevels; i++) {
         isZero[i] = IsZero();
         isZero[i].in <== siblings[i];
     }
@@ -91,7 +93,7 @@ template SMTLevIns(nLevels) {
 
     levIns[nLevels-1] <== (1-isZero[nLevels-2].out);
     done[nLevels-2] <== levIns[nLevels-1];
-    for (var i=nLevels-2; i>0; i--) {
+    for (i=nLevels-2; i>0; i--) {
         levIns[i] <== (1-done[i])*(1-isZero[i-1].out)
         done[i-1] <== levIns[i] + done[i];
     }

circuits/smt/smtprocessor.circom

@@ -150,6 +150,8 @@ template SMTProcessor(nLevels) {
 
     signal enabled;
 
+    var i;
+
     enabled <== fnc[0] + fnc[1] - fnc[0]*fnc[1]
 
     component hash1Old = SMTHash1();
@@ -167,18 +169,18 @@ template SMTProcessor(nLevels) {
     n2bNew.in <== newKey;
 
     component smtLevIns = SMTLevIns(nLevels);
-    for (var i=0; i<nLevels; i++) smtLevIns.siblings[i] <== siblings[i];
+    for (i=0; i<nLevels; i++) smtLevIns.siblings[i] <== siblings[i];
     smtLevIns.enabled <== enabled;
 
     component xors[nLevels];
-    for (var i=0; i<nLevels; i++) {
+    for (i=0; i<nLevels; i++) {
         xors[i] = XOR();
         xors[i].a <== n2bOld.out[i];
         xors[i].b <== n2bNew.out[i];
     }
 
     component sm[nLevels];
-    for (var i=0; i<nLevels; i++) {
+    for (i=0; i<nLevels; i++) {
         sm[i] = SMTProcessorSM();
         if (i==0) {
             sm[i].prev_top <== enabled;
@@ -204,7 +206,7 @@ template SMTProcessor(nLevels) {
     sm[nLevels-1].st_na + sm[nLevels-1].st_new1 + sm[nLevels-1].st_old0 +sm[nLevels-1].st_upd === 1;
 
     component levels[nLevels];
-    for (var i=nLevels-1; i != -1; i--) {
+    for (i=nLevels-1; i != -1; i--) {
         levels[i] = SMTProcessorLevel();
 
         levels[i].st_top <== sm[i].st_top;

circuits/smt/smtverifier.circom

@@ -48,6 +48,8 @@ template SMTVerifier(nLevels) {
     signal input value;
     signal input fnc;
 
+    var i;
+
     component hash1Old = SMTHash1();
     hash1Old.key <== oldKey;
     hash1Old.value <== oldValue;
@@ -63,11 +65,11 @@ template SMTVerifier(nLevels) {
     n2bNew.in <== key;
 
     component smtLevIns = SMTLevIns(nLevels);
-    for (var i=0; i<nLevels; i++) smtLevIns.siblings[i] <== siblings[i];
+    for (i=0; i<nLevels; i++) smtLevIns.siblings[i] <== siblings[i];
     smtLevIns.enabled <== enabled;
 
     component sm[nLevels];
-    for (var i=0; i<nLevels; i++) {
+    for (i=0; i<nLevels; i++) {
         sm[i] = SMTVerifierSM();
         if (i==0) {
             sm[i].prev_top <== enabled;
@@ -89,7 +91,7 @@ template SMTVerifier(nLevels) {
     sm[nLevels-1].st_na + sm[nLevels-1].st_iold + sm[nLevels-1].st_inew + sm[nLevels-1].st_i0 === 1;
 
     component levels[nLevels];
-    for (var i=nLevels-1; i != -1; i--) {
+    for (i=nLevels-1; i != -1; i--) {
         levels[i] = SMTVerifierLevel();
 
         levels[i].st_top <== sm[i].st_top;

index.js

@@ -4,3 +4,9 @@ exports.mimc7 = require("./src/mimc7");
 exports.mimcsponge = require("./src/mimcsponge");
 exports.babyJub = require("./src/babyjub");
 exports.pedersenHash = require("./src/pedersenHash");
+exports.SMT = require("./src/smt").SMT;
+exports.SMTMemDB = require("./src/smt_memdb");
+exports.poseidon = require("./src/poseidon");
+
+
+

package.json

@@ -1,6 +1,6 @@
 {
   "name": "circomlib",
-  "version": "0.0.15",
+  "version": "0.3.0",
   "description": "Basic circuits library for Circom",
   "main": "index.js",
   "directories": {
@@ -26,14 +26,13 @@
   "dependencies": {
     "blake-hash": "^1.1.0",
     "blake2b": "^2.1.3",
-    "snarkjs": "^0.1.19",
-    "typedarray-to-buffer": "^3.1.5",
-    "web3": "^1.0.0-beta.55"
+    "circom": "0.5.33",
+    "ffjavascript": "0.1.0"
   },
   "devDependencies": {
-    "circom": "0.0.28",
-    "eslint-plugin-mocha": "^5.2.0",
-    "ganache-cli": "^6.4.4",
-    "mocha": "^5.2.0"
+    "eslint": "^6.8.0",
+    "ganache-cli": "^6.12.1",
+    "mocha": "^7.1.1",
+    "web3": "^1.3.0"
   }
 }

src/babyjub.js

@@ -1,5 +1,6 @@
-const bn128 = require("snarkjs").bn128;
-const bigInt = require("snarkjs").bigInt;
+const F1Field = require("ffjavascript").F1Field;
+const Scalar = require("ffjavascript").Scalar;
+const utils = require("ffjavascript").utils;
 
 exports.addPoint = addPoint;
 exports.mulPointEscalar = mulPointEscalar;
@@ -7,23 +8,27 @@ exports.inCurve = inCurve;
 exports.inSubgroup = inSubgroup;
 exports.packPoint = packPoint;
 exports.unpackPoint = unpackPoint;
+
+
+exports.p = Scalar.fromString("21888242871839275222246405745257275088548364400416034343698204186575808495617");
+const F = new F1Field(exports.p);
+exports.F = F;
+
 exports.Generator = [
-    bigInt("995203441582195749578291179787384436505546430278305826713579947235728471134"),
-    bigInt("5472060717959818805561601436314318772137091100104008585924551046643952123905")
+    F.e("995203441582195749578291179787384436505546430278305826713579947235728471134"),
+    F.e("5472060717959818805561601436314318772137091100104008585924551046643952123905")
 ];
 exports.Base8 = [
-    bigInt("5299619240641551281634865583518297030282874472190772894086521144482721001553"),
-    bigInt("16950150798460657717958625567821834550301663161624707787222815936182638968203")
+    F.e("5299619240641551281634865583518297030282874472190772894086521144482721001553"),
+    F.e("16950150798460657717958625567821834550301663161624707787222815936182638968203")
 ];
-exports.order = bigInt("21888242871839275222246405745257275088614511777268538073601725287587578984328");
-exports.subOrder = exports.order.shr(3);
-exports.p = bn128.r;
-exports.A = bigInt("168700");
-exports.D = bigInt("168696");
+exports.order = Scalar.fromString("21888242871839275222246405745257275088614511777268538073601725287587578984328");
+exports.subOrder = Scalar.shiftRight(exports.order, 3);
+exports.A = F.e("168700");
+exports.D = F.e("168696");
 
 
 function addPoint(a,b) {
-    const q = bn128.r;
 
     const res = [];
 
@@ -31,23 +36,40 @@ function addPoint(a,b) {
      res[0] = bigInt((a[0]*b[1] + b[0]*a[1]) *  bigInt(bigInt("1") + d*a[0]*b[0]*a[1]*b[1]).inverse(q)).affine(q);
     res[1] = bigInt((a[1]*b[1] - cta*a[0]*b[0]) * bigInt(bigInt("1") - d*a[0]*b[0]*a[1]*b[1]).inverse(q)).affine(q);
     */
-    res[0] = bigInt((bigInt(a[0]).mul(b[1]).add(bigInt(b[0]).mul(a[1]))).mul(bigInt(bigInt("1").add(exports.D.mul(a[0]).mul(b[0]).mul(a[1]).mul(b[1]))).inverse(q))).affine(q);
-    res[1] = bigInt((bigInt(a[1]).mul(b[1]).sub(exports.A.mul(a[0]).mul(b[0]))).mul(bigInt(bigInt("1").sub(exports.D.mul(a[0]).mul(b[0]).mul(a[1]).mul(b[1]))).inverse(q))).affine(q);
+
+    const beta = F.mul(a[0],b[1]);
+    const gamma = F.mul(a[1],b[0]);
+    const delta = F.mul(
+        F.sub(a[1], F.mul(exports.A, a[0])),
+        F.add(b[0], b[1])
+    );
+    const tau = F.mul(beta, gamma);
+    const dtau = F.mul(exports.D, tau);
+
+    res[0] = F.div(
+        F.add(beta, gamma),
+        F.add(F.one, dtau)
+    );
+
+    res[1] = F.div(
+        F.add(delta, F.sub(F.mul(exports.A,beta), gamma)),
+        F.sub(F.one, dtau)
+    );
 
     return res;
 }
 
 function mulPointEscalar(base, e) {
-    let res = [bigInt("0"),bigInt("1")];
-    let rem = bigInt(e);
+    let res = [F.e("0"),F.e("1")];
+    let rem = e;
     let exp = base;
 
-    while (! rem.isZero()) {
-        if (rem.isOdd()) {
+    while (! Scalar.isZero(rem)) {
+        if (Scalar.isOdd(rem)) {
             res = addPoint(res, exp);
         }
         exp = addPoint(exp, exp);
-        rem = rem.shr(1);
+        rem = Scalar.shiftRight(rem, 1);
     }
 
     return res;
@@ -56,16 +78,15 @@ function mulPointEscalar(base, e) {
 function inSubgroup(P) {
     if (!inCurve(P)) return false;
     const res= mulPointEscalar(P, exports.subOrder);
-    return (res[0].equals(bigInt(0))) && (res[1].equals(bigInt(1)));
+    return (F.isZero(res[0]) && F.eq(res[1], F.one));
 }
 
 function inCurve(P) {
-    const F = bn128.Fr;
 
     const x2 = F.square(P[0]);
     const y2 = F.square(P[1]);
 
-    if (!F.equals(
+    if (!F.eq(
         F.add(F.mul(exports.A, x2), y2),
         F.add(F.one, F.mul(F.mul(x2, y2), exports.D)))) return false;
 
@@ -73,16 +94,14 @@ function inCurve(P) {
 }
 
 function packPoint(P) {
-    const buff = bigInt.leInt2Buff(P[1], 32);
-    if (P[0].greater(exports.p.shr(1))) {
+    const buff = utils.leInt2Buff(P[1], 32);
+    if (F.lt(P[0], F.zero)) {
         buff[31] = buff[31] | 0x80;
     }
     return buff;
 }
 
 function unpackPoint(_buff) {
-    const F = bn128.Fr;
-
     const buff = Buffer.from(_buff);
     let sign = false;
     const P = new Array(2);
@@ -90,8 +109,8 @@ function unpackPoint(_buff) {
         sign = true;
         buff[31] = buff[31] & 0x7F;
     }
-    P[1] = bigInt.leBuff2int(buff);
-    if (P[1].greaterOrEquals(exports.p)) return null;
+    P[1] = utils.leBuff2int(buff);
+    if (Scalar.gt(P[1], exports.p)) return null;
 
     const y2 = F.square(P[1]);
 
@@ -103,7 +122,7 @@ function unpackPoint(_buff) {
 
     if (sign) x = F.neg(x);
 
-    P[0] = F.affine(x);
+    P[0] = x;
 
     return P;
 }

src/eddsa.js

@@ -1,11 +1,14 @@
 const createBlakeHash = require("blake-hash");
-const bigInt = require("snarkjs").bigInt;
+const Scalar = require("ffjavascript").Scalar;
+const F1Field = require("ffjavascript").F1Field;
 const babyJub = require("./babyjub");
+const utils = require("ffjavascript").utils;
 const pedersenHash = require("./pedersenHash").hash;
 const mimc7 = require("./mimc7");
 const poseidon = require("./poseidon.js");
 const mimcsponge = require("./mimcsponge");
 
+
 exports.prv2pub= prv2pub;
 exports.sign = sign;
 exports.signMiMC = signMiMC;
@@ -30,26 +33,27 @@ function pruneBuffer(_buff) {
 
 function prv2pub(prv) {
     const sBuff = pruneBuffer(createBlakeHash("blake512").update(prv).digest().slice(0,32));
-    let s = bigInt.leBuff2int(sBuff);
-    const A = babyJub.mulPointEscalar(babyJub.Base8, s.shr(3));
+    let s = utils.leBuff2int(sBuff);
+    const A = babyJub.mulPointEscalar(babyJub.Base8, Scalar.shr(s,3));
     return A;
 }
 
 function sign(prv, msg) {
     const h1 = createBlakeHash("blake512").update(prv).digest();
     const sBuff = pruneBuffer(h1.slice(0,32));
-    const s = bigInt.leBuff2int(sBuff);
-    const A = babyJub.mulPointEscalar(babyJub.Base8, s.shr(3));
+    const s = utils.leBuff2int(sBuff);
+    const A = babyJub.mulPointEscalar(babyJub.Base8, Scalar.shr(s, 3));
 
     const rBuff = createBlakeHash("blake512").update(Buffer.concat([h1.slice(32,64), msg])).digest();
-    let r = bigInt.leBuff2int(rBuff);
-    r = r.mod(babyJub.subOrder);
+    let r = utils.leBuff2int(rBuff);
+    const Fr = new F1Field(babyJub.subOrder);
+    r = Fr.e(r);
     const R8 = babyJub.mulPointEscalar(babyJub.Base8, r);
     const R8p = babyJub.packPoint(R8);
     const Ap = babyJub.packPoint(A);
     const hmBuff = pedersenHash(Buffer.concat([R8p, Ap, msg]));
-    const hm = bigInt.leBuff2int(hmBuff);
-    const S = r.add(hm.mul(s)).mod(babyJub.subOrder);
+    const hm = utils.leBuff2int(hmBuff);
+    const S = Fr.add(r , Fr.mul(hm, s));
     return {
         R8: R8,
         S: S
@@ -59,16 +63,17 @@ function sign(prv, msg) {
 function signMiMC(prv, msg) {
     const h1 = createBlakeHash("blake512").update(prv).digest();
     const sBuff = pruneBuffer(h1.slice(0,32));
-    const s = bigInt.leBuff2int(sBuff);
-    const A = babyJub.mulPointEscalar(babyJub.Base8, s.shr(3));
+    const s = utils.leBuff2int(sBuff);
+    const A = babyJub.mulPointEscalar(babyJub.Base8, Scalar.shr(s, 3));
 
-    const msgBuff = bigInt.leInt2Buff(msg, 32);
+    const msgBuff = utils.leInt2Buff(msg, 32);
     const rBuff = createBlakeHash("blake512").update(Buffer.concat([h1.slice(32,64), msgBuff])).digest();
-    let r = bigInt.leBuff2int(rBuff);
-    r = r.mod(babyJub.subOrder);
+    let r = utils.leBuff2int(rBuff);
+    const Fr = new F1Field(babyJub.subOrder);
+    r = Fr.e(r);
     const R8 = babyJub.mulPointEscalar(babyJub.Base8, r);
     const hm = mimc7.multiHash([R8[0], R8[1], A[0], A[1], msg]);
-    const S = r.add(hm.mul(s)).mod(babyJub.subOrder);
+    const S = Fr.add(r , Fr.mul(hm, s));
     return {
         R8: R8,
         S: S
@@ -78,16 +83,17 @@ function signMiMC(prv, msg) {
 function signMiMCSponge(prv, msg) {
     const h1 = createBlakeHash("blake512").update(prv).digest();
     const sBuff = pruneBuffer(h1.slice(0,32));
-    const s = bigInt.leBuff2int(sBuff);
-    const A = babyJub.mulPointEscalar(babyJub.Base8, s.shr(3));
+    const s = utils.leBuff2int(sBuff);
+    const A = babyJub.mulPointEscalar(babyJub.Base8, Scalar.shr(s, 3));
 
-    const msgBuff = bigInt.leInt2Buff(msg, 32);
+    const msgBuff = utils.leInt2Buff(msg, 32);
     const rBuff = createBlakeHash("blake512").update(Buffer.concat([h1.slice(32,64), msgBuff])).digest();
-    let r = bigInt.leBuff2int(rBuff);
-    r = r.mod(babyJub.subOrder);
+    let r = utils.leBuff2int(rBuff);
+    const Fr = new F1Field(babyJub.subOrder);
+    r = Fr.e(r);
     const R8 = babyJub.mulPointEscalar(babyJub.Base8, r);
     const hm = mimcsponge.multiHash([R8[0], R8[1], A[0], A[1], msg]);
-    const S = r.add(hm.mul(s)).mod(babyJub.subOrder);
+    const S = Fr.add(r , Fr.mul(hm, s));
     return {
         R8: R8,
         S: S
@@ -97,17 +103,17 @@ function signMiMCSponge(prv, msg) {
 function signPoseidon(prv, msg) {
     const h1 = createBlakeHash("blake512").update(prv).digest();
     const sBuff = pruneBuffer(h1.slice(0,32));
-    const s = bigInt.leBuff2int(sBuff);
-    const A = babyJub.mulPointEscalar(babyJub.Base8, s.shr(3));
+    const s = utils.leBuff2int(sBuff);
+    const A = babyJub.mulPointEscalar(babyJub.Base8, Scalar.shr(s, 3));
 
-    const msgBuff = bigInt.leInt2Buff(msg, 32);
+    const msgBuff = utils.leInt2Buff(msg, 32);
     const rBuff = createBlakeHash("blake512").update(Buffer.concat([h1.slice(32,64), msgBuff])).digest();
-    let r = bigInt.leBuff2int(rBuff);
-    r = r.mod(babyJub.subOrder);
+    let r = utils.leBuff2int(rBuff);
+    const Fr = new F1Field(babyJub.subOrder);
+    r = Fr.e(r);
     const R8 = babyJub.mulPointEscalar(babyJub.Base8, r);
-    const hash = poseidon.createHash(6, 8, 57);
-    const hm = hash([R8[0], R8[1], A[0], A[1], msg]);
-    const S = r.add(hm.mul(s)).mod(babyJub.subOrder);
+    const hm = poseidon([R8[0], R8[1], A[0], A[1], msg]);
+    const S = Fr.add(r , Fr.mul(hm, s));
     return {
         R8: R8,
         S: S
@@ -128,14 +134,14 @@ function verify(msg, sig, A) {
     const R8p = babyJub.packPoint(sig.R8);
     const Ap = babyJub.packPoint(A);
     const hmBuff = pedersenHash(Buffer.concat([R8p, Ap, msg]));
-    const hm = bigInt.leBuff2int(hmBuff);
+    const hm = utils.leBuff2int(hmBuff);
 
     const Pleft = babyJub.mulPointEscalar(babyJub.Base8, sig.S);
-    let Pright = babyJub.mulPointEscalar(A, hm.mul(bigInt("8")));
+    let Pright = babyJub.mulPointEscalar(A, Scalar.mul(hm,8));
     Pright = babyJub.addPoint(sig.R8, Pright);
 
-    if (!Pleft[0].equals(Pright[0])) return false;
-    if (!Pleft[1].equals(Pright[1])) return false;
+    if (!babyJub.F.eq(Pleft[0],Pright[0])) return false;
+    if (!babyJub.F.eq(Pleft[1],Pright[1])) return false;
     return true;
 }
 
@@ -153,11 +159,11 @@ function verifyMiMC(msg, sig, A) {
     const hm = mimc7.multiHash([sig.R8[0], sig.R8[1], A[0], A[1], msg]);
 
     const Pleft = babyJub.mulPointEscalar(babyJub.Base8, sig.S);
-    let Pright = babyJub.mulPointEscalar(A, hm.mul(bigInt("8")));
+    let Pright = babyJub.mulPointEscalar(A, Scalar.mul(hm, 8));
     Pright = babyJub.addPoint(sig.R8, Pright);
 
-    if (!Pleft[0].equals(Pright[0])) return false;
-    if (!Pleft[1].equals(Pright[1])) return false;
+    if (!babyJub.F.eq(Pleft[0],Pright[0])) return false;
+    if (!babyJub.F.eq(Pleft[1],Pright[1])) return false;
     return true;
 }
 
@@ -173,15 +179,14 @@ function verifyPoseidon(msg, sig, A) {
     if (!babyJub.inCurve(A)) return false;
     if (sig.S>= babyJub.subOrder) return false;
 
-    const hash = poseidon.createHash(6, 8, 57);
-    const hm = hash([sig.R8[0], sig.R8[1], A[0], A[1], msg]);
+    const hm = poseidon([sig.R8[0], sig.R8[1], A[0], A[1], msg]);
 
     const Pleft = babyJub.mulPointEscalar(babyJub.Base8, sig.S);
-    let Pright = babyJub.mulPointEscalar(A, hm.mul(bigInt("8")));
+    let Pright = babyJub.mulPointEscalar(A, Scalar.mul(hm, 8));
     Pright = babyJub.addPoint(sig.R8, Pright);
 
-    if (!Pleft[0].equals(Pright[0])) return false;
-    if (!Pleft[1].equals(Pright[1])) return false;
+    if (!babyJub.F.eq(Pleft[0],Pright[0])) return false;
+    if (!babyJub.F.eq(Pleft[1],Pright[1])) return false;
     return true;
 }
 
@@ -199,24 +204,24 @@ function verifyMiMCSponge(msg, sig, A) {
     const hm = mimcsponge.multiHash([sig.R8[0], sig.R8[1], A[0], A[1], msg]);
 
     const Pleft = babyJub.mulPointEscalar(babyJub.Base8, sig.S);
-    let Pright = babyJub.mulPointEscalar(A, hm.mul(bigInt("8")));
+    let Pright = babyJub.mulPointEscalar(A, hm.times(bigInt("8")));
     Pright = babyJub.addPoint(sig.R8, Pright);
 
-    if (!Pleft[0].equals(Pright[0])) return false;
-    if (!Pleft[1].equals(Pright[1])) return false;
+    if (!babyJub.F.eq(Pleft[0],Pright[0])) return false;
+    if (!babyJub.F.eq(Pleft[1],Pright[1])) return false;
     return true;
 }
 
 function packSignature(sig) {
     const R8p = babyJub.packPoint(sig.R8);
-    const Sp = bigInt.leInt2Buff(sig.S, 32);
+    const Sp = utils.leInt2Buff(sig.S, 32);
     return Buffer.concat([R8p, Sp]);
 }
 
 function unpackSignature(sigBuff) {
     return {
         R8: babyJub.unpackPoint(sigBuff.slice(0,32)),
-        S: bigInt.leBuff2int(sigBuff.slice(32,64))
+        S: utils.leBuff2int(sigBuff.slice(32,64))
     };
 }
 

src/evmasm.js

@@ -154,6 +154,17 @@ class Contract {
     }
 
     push(data) {
+        if (typeof data === "number") {
+            let isNeg;
+            if (data<0) {
+                isNeg = true;
+                data = -data;
+            }
+            data = data.toString(16);
+            if (data.length % 2 == 1) data = "0" + data;
+            data = "0x" + data;
+            if (isNeg) data = "-"+data;
+        }
         const d = Web3Utils.hexToBytes(Web3Utils.toHex(data));
         if (d.length == 0 || d.length > 32) {
             throw new Error("Assertion failed");

src/g2_gencontract.js

@@ -4,7 +4,6 @@
 
 const Contract = require("./evmasm");
 const G2 = require("snarkjs").bn128.G2;
-const bigInt = require("snarkjs").bigInt;
 
 
 function toHex256(a) {
@@ -539,7 +538,7 @@ function createCode(P, w) {
     function storeVals() {
         C.push(VAR_POINTS);                 // p
         for (let i=0; i<NPOINTS; i++) {
-            const MP = G2.affine(G2.mulScalar(P, bigInt(i)));
+            const MP = G2.affine(G2.mulScalar(P, i));
             for (let j=0; j<2; j++) {
                 for (let k=0; k<2; k++) {
                     C.push(toHex256(MP[j][k]));     // MP[0][0] p

src/mimc7.js

@@ -1,7 +1,9 @@
-const bn128 = require("snarkjs").bn128;
-const bigInt = require("snarkjs").bigInt;
+const Scalar = require("ffjavascript").Scalar;
+const ZqField = require("ffjavascript").ZqField;
+
 const Web3Utils = require("web3-utils");
-const F = bn128.Fr;
+const F = new ZqField(Scalar.fromString("21888242871839275222246405745257275088548364400416034343698204186575808495617"));
+exports.F = F;
 
 const SEED = "mimc";
 const NROUNDS = 91;
@@ -9,8 +11,8 @@ const NROUNDS = 91;
 exports.getIV = (seed) => {
     if (typeof seed === "undefined") seed = SEED;
     const c = Web3Utils.keccak256(seed+"_iv");
-    const cn = bigInt(Web3Utils.toBN(c).toString());
-    const iv = cn.mod(F.q);
+    const cn = Scalar.FromString(Web3Utils.toBN(c).toString());
+    const iv = cn.mod(F.p);
     return iv;
 };
 
@@ -22,26 +24,26 @@ exports.getConstants = (seed, nRounds) => {
     for (let i=1; i<nRounds; i++) {
         c = Web3Utils.keccak256(c);
 
-        const n1 = Web3Utils.toBN(c).mod(Web3Utils.toBN(F.q.toString()));
+        const n1 = Web3Utils.toBN(c).mod(Web3Utils.toBN(F.p.toString()));
         const c2 = Web3Utils.padLeft(Web3Utils.toHex(n1), 64);
-        cts[i] = bigInt(Web3Utils.toBN(c2).toString());
+        cts[i] = Scalar.fromString(Web3Utils.toBN(c2).toString());
     }
-    cts[0] = bigInt(0);
+    cts[0] = F.e(0);
     return cts;
 };
 
 const cts = exports.getConstants(SEED, 91);
 
 exports.hash =  (_x_in, _k) =>{
-    const x_in = bigInt(_x_in);
-    const k = bigInt(_k);
+    const x_in = F.e(_x_in);
+    const k = F.e(_k);
     let r;
     for (let i=0; i<NROUNDS; i++) {
         const c = cts[i];
         const t = (i==0) ? F.add(x_in, k) : F.add(F.add(r, k), c);
-        r = F.exp(t, 7);
+        r = F.pow(t, 7);
     }
-    return F.affine(F.add(r, k));
+    return F.add(r, k);
 };
 
 exports.multiHash = (arr, key) => {
@@ -57,8 +59,8 @@ exports.multiHash = (arr, key) => {
                 r,
                 arr[i]
             ),
-            exports.hash(bigInt(arr[i]), r)
+            exports.hash(F.e(arr[i]), r)
         );
     }
-    return F.affine(r);
+    return r;
 };

src/mimcsponge.js

@@ -1,7 +1,7 @@
-const bn128 = require("snarkjs").bn128;
-const bigInt = require("snarkjs").bigInt;
+const Scalar = require("ffjavascript").Scalar
 const Web3Utils = require("web3-utils");
-const F = bn128.Fr;
+const ZqField = require("ffjavascript").ZqField;
+const F = new ZqField(Scalar.fromString("21888242871839275222246405745257275088548364400416034343698204186575808495617"));
 
 const SEED = "mimcsponge";
 const NROUNDS = 220;
@@ -9,8 +9,8 @@ const NROUNDS = 220;
 exports.getIV = (seed) => {
     if (typeof seed === "undefined") seed = SEED;
     const c = Web3Utils.keccak256(seed+"_iv");
-    const cn = bigInt(Web3Utils.toBN(c).toString());
-    const iv = cn.mod(F.q);
+    const cn = Scalar.fromString(Web3Utils.toBN(c).toString());
+    const iv = cn.mod(F.p);
     return iv;
 };
 
@@ -22,35 +22,35 @@ exports.getConstants = (seed, nRounds) => {
     for (let i=1; i<nRounds; i++) {
         c = Web3Utils.keccak256(c);
 
-        const n1 = Web3Utils.toBN(c).mod(Web3Utils.toBN(F.q.toString()));
+        const n1 = Web3Utils.toBN(c).mod(Web3Utils.toBN(F.p.toString()));
         const c2 = Web3Utils.padLeft(Web3Utils.toHex(n1), 64);
-        cts[i] = bigInt(Web3Utils.toBN(c2).toString());
+        cts[i] = F.e(Web3Utils.toBN(c2).toString());
     }
-    cts[0] = bigInt(0);
-    cts[cts.length - 1] = bigInt(0);
+    cts[0] = F.e(0);
+    cts[cts.length - 1] = F.e(0);
     return cts;
 };
 
 const cts = exports.getConstants(SEED, NROUNDS);
 
 exports.hash = (_xL_in, _xR_in, _k) =>{
-    let xL = bigInt(_xL_in);
-    let xR = bigInt(_xR_in);
-    const k = bigInt(_k);
+    let xL = F.e(_xL_in);
+    let xR = F.e(_xR_in);
+    const k = F.e(_k);
     for (let i=0; i<NROUNDS; i++) {
         const c = cts[i];
         const t = (i==0) ? F.add(xL, k) : F.add(F.add(xL, k), c);
-        const xR_tmp = bigInt(xR);
+        const xR_tmp = F.e(xR);
         if (i < (NROUNDS - 1)) {
             xR = xL;
-          xL = F.add(xR_tmp, F.exp(t, 5));
+            xL = F.add(xR_tmp, F.pow(t, 5));
         } else {
-          xR = F.add(xR_tmp, F.exp(t, 5));
+            xR = F.add(xR_tmp, F.pow(t, 5));
         }
     }
     return {
-      xL: F.affine(xL),
-      xR: F.affine(xR),
+        xL: F.normalize(xL),
+        xR: F.normalize(xR),
     };
 };
 
@@ -66,7 +66,7 @@ exports.multiHash = (arr, key, numOutputs) => {
     let C = F.zero;
 
     for (let i=0; i<arr.length; i++) {
-      R = F.add(R, bigInt(arr[i]));
+        R = F.add(R, F.e(arr[i]));
         const S = exports.hash(R, C, key);
         R = S.xL;
         C = S.xR;
@@ -79,8 +79,8 @@ exports.multiHash = (arr, key, numOutputs) => {
         outputs.push(R);
     }
     if (numOutputs == 1) {
-      return F.affine(outputs[0]);
+        return F.normalize(outputs[0]);
     } else {
-      return outputs.map(x => F.affine(x));
+        return outputs.map(x => F.normalize(x));
     }
 };

src/pedersenHash.js

@@ -1,7 +1,7 @@
-const bn128 = require("snarkjs").bn128;
-const bigInt = require("snarkjs").bigInt;
 const babyJub = require("./babyjub");
 const createBlakeHash = require("blake-hash");
+const blake2b = require("blake2b");
+const Scalar = require("ffjavascript").Scalar;
 
 const GENPOINT_PREFIX = "PedersenGenerator";
 const windowSize = 4;
@@ -10,13 +10,23 @@ const nWindowsPerSegment = 50;
 exports.hash = pedersenHash;
 exports.getBasePoint = getBasePoint;
 
-function pedersenHash(msg) {
+function baseHash(type, S) {
+    if (type == "blake") {
+        return createBlakeHash("blake256").update(S).digest();
+    } else if (type == "blake2b") {
+        return Buffer.from(blake2b(32).update(Buffer.from(S)).digest());
+    }
+}
+
+function pedersenHash(msg, options) {
+    options = options || {};
+    options.baseHash = options.baseHash || "blake";
     const bitsPerSegment = windowSize*nWindowsPerSegment;
     const bits = buffer2bits(msg);
 
     const nSegments = Math.floor((bits.length - 1)/(windowSize*nWindowsPerSegment)) +1;
 
-    let accP = [bigInt.zero,bigInt.one];
+    let accP = [babyJub.F.zero,babyJub.F.one];
 
     for (let s=0; s<nSegments; s++) {
         let nWindows;
@@ -25,32 +35,32 @@ function pedersenHash(msg) {
         } else {
             nWindows = nWindowsPerSegment;
         }
-        let escalar = bigInt.zero;
-        let exp = bigInt.one;
+        let escalar = Scalar.e(0);
+        let exp = Scalar.e(1);
         for (let w=0; w<nWindows; w++) {
             let o = s*bitsPerSegment + w*windowSize;
-            let acc = bigInt.one;
+            let acc = Scalar.e(1);
             for (let b=0; ((b<windowSize-1)&&(o<bits.length)) ; b++) {
                 if (bits[o]) {
-                    acc = acc.add( bigInt.one.shl(b) );
+                    acc = Scalar.add(acc, Scalar.shl(Scalar.e(1), b) );
                 }
                 o++;
             }
             if (o<bits.length) {
                 if (bits[o]) {
-                    acc = acc.neg();
+                    acc = Scalar.neg(acc);
                 }
                 o++;
             }
-            escalar = escalar.add(acc.mul(exp));
-            exp = exp.shl(windowSize+1);
+            escalar = Scalar.add(escalar, Scalar.mul(acc, exp));
+            exp = Scalar.shl(exp, windowSize+1);
         }
 
-        if (escalar.lesser(bigInt.zero)) {
-            escalar = babyJub.subOrder.add(escalar);
+        if (Scalar.lt(escalar, 0)) {
+            escalar = Scalar.add( escalar, babyJub.subOrder);
         }
 
-        accP = babyJub.addPoint(accP, babyJub.mulPointEscalar(getBasePoint(s), escalar));
+        accP = babyJub.addPoint(accP, babyJub.mulPointEscalar(getBasePoint(options.baseHash, s), escalar));
     }
 
     return babyJub.packPoint(accP);
@@ -58,13 +68,13 @@ function pedersenHash(msg) {
 
 let bases = [];
 
-function getBasePoint(pointIdx) {
+function getBasePoint(baseHashType, pointIdx) {
     if (pointIdx<bases.length) return bases[pointIdx];
     let p= null;
     let tryIdx = 0;
     while (p==null) {
         const S = GENPOINT_PREFIX + "_" + padLeftZeros(pointIdx, 32) + "_" + padLeftZeros(tryIdx, 32);
-        const h = createBlakeHash("blake256").update(S).digest();
+        const h = baseHash(baseHashType, S);
         h[31] = h[31] & 0xBF;  // Set 255th bit to 0 (256th is the signal and 254th is the last possible bit to 1)
         p = babyJub.unpackPoint(h);
         tryIdx++;

src/pedersen_printbases.js

@@ -7,7 +7,15 @@ if (typeof process.argv[2] != "undefined") {
     nBases = 5;
 }
 
+let baseHash;
+if (typeof process.argv[3] != "undefined") {
+    baseHash = process.argv[3];
+} else {
+    baseHash = "blake";
+}
+
+
 for (let i=0; i < nBases; i++) {
-    const p = pedersenHash.getBasePoint(i);
+    const p = pedersenHash.getBasePoint(baseHash, i);
     console.log(`[${p[0]},${p[1]}]`);
 }

src/poseidon.js

@@ -1,116 +1,49 @@
-const bn128 = require("snarkjs").bn128;
-const bigInt = require("snarkjs").bigInt;
-const blake2b = require('blake2b');
 const assert = require("assert");
-const F = bn128.Fr;
+const Scalar = require("ffjavascript").Scalar;
+const ZqField = require("ffjavascript").ZqField;
+const { unstringifyBigInts } = require("ffjavascript").utils;
 
-const SEED = "poseidon";
-const NROUNDSF = 8;
-const NROUNDSP = 57;
-const T = 6;
+// Prime 0x30644e72e131a029b85045b68181585d2833e84879b9709143e1f593f0000001
+const F = new ZqField(Scalar.fromString("21888242871839275222246405745257275088548364400416034343698204186575808495617"));
 
-function getPseudoRandom(seed, n) {
-    const res = [];
-    let input = Buffer.from(seed);
-    let h = blake2b(32).update(input).digest()
-    while (res.length<n) {
-        const n = F.affine(bigInt.leBuff2int(h));
-        res.push(n);
-        h = blake2b(32).update(h).digest()
-    }
+// Parameters are generated by a reference script https://extgit.iaik.tugraz.at/krypto/hadeshash/-/blob/master/code/generate_parameters_grain.sage
+// Used like so: sage generate_parameters_grain.sage 1 0 254 2 8 56 0x30644e72e131a029b85045b68181585d2833e84879b9709143e1f593f0000001
+const { C, M } = unstringifyBigInts(require("./poseidon_constants.json"));
 
-    return res;
-}
+// Using recommended parameters from whitepaper https://eprint.iacr.org/2019/458.pdf (table 2, table 8)
+// Generated by https://extgit.iaik.tugraz.at/krypto/hadeshash/-/blob/master/code/calc_round_numbers.py
+// And rounded up to nearest integer that divides by t
+const N_ROUNDS_F = 8;
+const N_ROUNDS_P = [56, 57, 56, 60, 60, 63, 64, 63];
 
-function allDifferent(v) {
-    for (let i=0; i<v.length; i++) {
-        if (v[i].isZero()) return false;
-        for (let j=i+1; j<v.length; j++) {
-            if (v[i].equals(v[j])) return false;
-        }
-    }
-    return true;
-}
+const pow5 = a => F.mul(a, F.square(F.square(a, a)));
 
-exports.getMatrix = (t, seed, nRounds) => {
-    if (typeof seed === "undefined") seed = SEED;
-    if (typeof nRounds === "undefined") nRounds = NROUNDSF + NROUNDSP;
-    if (typeof t === "undefined") t = T;
-    let nonce = "0000";
-    let cmatrix = getPseudoRandom(seed+"_matrix_"+nonce, t*2);
-    while (!allDifferent(cmatrix)) {
-        nonce = (Number(nonce)+1)+"";
-        while(nonce.length<4) nonce = "0"+nonce;
-        cmatrix = getPseudoRandom(seed+"_matrix_"+nonce, t*2);
-    }
-
-    const M = new Array(t);
-    for (let i=0; i<t; i++) {
-        M[i] = new Array(t);
-        for (let j=0; j<t; j++) {
-            M[i][j] = F.affine(F.inverse(F.sub(cmatrix[i], cmatrix[t+j])));
-        }
-    }
-    return M;
-};
-
-exports.getConstants = (t, seed, nRounds) => {
-    if (typeof seed === "undefined") seed = SEED;
-    if (typeof nRounds === "undefined") nRounds = NROUNDSF + NROUNDSP;
-    if (typeof t === "undefined") t = T;
-    const cts = getPseudoRandom(seed+"_constants", nRounds);
-    return cts;
-};
-
-function ark(state, c) {
-    for (let j=0; j<state.length; j++ ) {
-        state[j] = F.add(state[j], c);
-    }
-}
-
-function sigma(a) {
-    return F.mul(a, F.square(F.square(a,a)));
-}
-
-function mix(state, M) {
-    const newState = new Array(state.length);
-    for (let i=0; i<state.length; i++) {
-        newState[i] = F.zero;
-        for (let j=0; j<state.length; j++) {
-            newState[i] = F.add(newState[i], F.mul(M[i][j], state[j]) );
-        }
-    }
-    for (let i=0; i<state.length; i++) state[i] = newState[i];
-}
-
-exports.createHash = (t, nRoundsF, nRoundsP, seed) => {
-
-    if (typeof seed === "undefined") seed = SEED;
-    if (typeof nRoundsF === "undefined") nRoundsF = NROUNDSF;
-    if (typeof nRoundsP === "undefined") nRoundsP = NROUNDSP;
-    if (typeof t === "undefined") t = T;
-
-    assert(nRoundsF % 2 == 0);
-    const C = exports.getConstants(t, seed, nRoundsF + nRoundsP);
-    const M = exports.getMatrix(t, seed, nRoundsF + nRoundsP);
-    return function(inputs) {
-        let state = [];
-        assert(inputs.length < t);
+function poseidon(inputs) {
     assert(inputs.length > 0);
-        for (let i=0; i<inputs.length; i++) state[i] = bigInt(inputs[i]);
-        for (let i=inputs.length; i<t; i++) state[i] = F.zero;
+    assert(inputs.length < N_ROUNDS_P.length - 1);
 
-        for (let i=0; i< nRoundsF + nRoundsP; i++) {
-            ark(state, C[i]);
-            if ((i<nRoundsF/2) || (i >= nRoundsF/2 + nRoundsP)) {
-                for (let j=0; j<t; j++) state[j] = sigma(state[j]);
+    const t = inputs.length + 1;
+    const nRoundsF = N_ROUNDS_F;
+    const nRoundsP = N_ROUNDS_P[t - 2];
+
+    let state = [...inputs.map(a => F.e(a)), F.zero];
+    for (let r = 0; r < nRoundsF + nRoundsP; r++) {
+        state = state.map((a, i) => F.add(a, C[t - 2][r * t + i]));
+
+        if (r < nRoundsF / 2 || r >= nRoundsF / 2 + nRoundsP) {
+            state = state.map(a => pow5(a));
         } else {
-                state[0] = sigma(state[0]);
+            state[0] = pow5(state[0]);
         }
-            mix(state, M);
+
+        // no matrix multiplication in the last round
+        if (r < nRoundsF + nRoundsP - 1) {
+            state = state.map((_, i) =>
+                state.reduce((acc, a, j) => F.add(acc, F.mul(M[t - 2][j][i], a)), F.zero)
+            );
+        }
+    }
+    return F.normalize(state[0]);
 }
-        return F.affine(state[0]);
-    };
-};
-
 
+module.exports = poseidon;

src/poseidon_gencontract.js

@@ -2,14 +2,14 @@
 // License: LGPL-3.0+
 //
 
-const Poseidon = require("./poseidon.js");
-
 const Contract = require("./evmasm");
+const { unstringifyBigInts } = require("ffjavascript").utils;
+const Web3Utils = require("web3-utils");
 
-const SEED = "poseidon";
-const NROUNDSF = 8;
-const NROUNDSP = 57;
-const T = 6;
+const { C:K, M } = unstringifyBigInts(require("./poseidon_constants.json"));
+
+const N_ROUNDS_F = 8;
+const N_ROUNDS_P = [56, 57, 56, 60, 60, 63, 64, 63];
 
 function toHex256(a) {
     let S = a.toString(16);
@@ -17,38 +17,34 @@ function toHex256(a) {
     return "0x" + S;
 }
 
-function createCode(t, nRoundsF, nRoundsP, seed) {
-    if (typeof seed === "undefined") seed = SEED;
-    if (typeof nRoundsF === "undefined") nRoundsF = NROUNDSF;
-    if (typeof nRoundsP === "undefined") nRoundsP = NROUNDSP;
-    if (typeof t === "undefined") t = T;
+function createCode(nInputs) {
 
-    const K = Poseidon.getConstants(t, seed, nRoundsP + nRoundsF);
-    const M = Poseidon.getMatrix(t, seed, nRoundsP + nRoundsF);
+    if (( nInputs<1) || (nInputs>8)) throw new Error("Invalid number of inputs. Must be 1<=nInputs<=8");
+    const t = nInputs + 1;
+    const nRoundsF = N_ROUNDS_F;
+    const nRoundsP = N_ROUNDS_P[t - 2];
 
     const C = new Contract();
 
     function saveM() {
         for (let i=0; i<t; i++) {
             for (let j=0; j<t; j++) {
-                C.push(toHex256(M[i][j]));
+                C.push(toHex256(M[t-2][j][i]));
                 C.push((1+i*t+j)*32);
                 C.mstore();
             }
         }
     }
 
-    function ark(r) {
-        C.push(toHex256(K[r])); // K, st, q
+    function ark(r) {   // st, q
         for (let i=0; i<t; i++) {
-            C.dup(1+t); // q, K, st, q
-            C.dup(1);   // K, q, K, st, q
-            C.dup(3+i); // st[i], K, q, K, st, q
-            C.addmod(); // newSt[i], K, st, q
-            C.swap(2 + i); // xx, K, st, q
+            C.dup(t); // q, st, q
+            C.push(toHex256(K[t-2][r*t+i]));  // K, q, st, q
+            C.dup(2+i); // st[i], K, q, st, q
+            C.addmod(); // newSt[i], st, q
+            C.swap(1 + i); // xx, st, q
             C.pop();
         }
-        C.pop();
     }
 
     function sigma(p) {
@@ -104,8 +100,13 @@ function createCode(t, nRoundsF, nRoundsP, seed) {
     C.push(0);
     C.calldataload();
     C.div();
-    C.push("0xc4420fb4"); // poseidon(uint256[])
+    C.dup(0);
+    C.push(Web3Utils.keccak256(`poseidon(uint256[${nInputs}])`).slice(0, 10)); // poseidon(uint256[n])
     C.eq();
+    C.swap(1);
+    C.push(Web3Utils.keccak256(`poseidon(bytes32[${nInputs}])`).slice(0, 10)); // poseidon(bytes32[n])
+    C.eq();
+    C.or();
     C.jmpi("start");
     C.invalid();
 
@@ -115,17 +116,16 @@ function createCode(t, nRoundsF, nRoundsP, seed) {
 
     C.push("0x30644e72e131a029b85045b68181585d2833e84879b9709143e1f593f0000001");  // q
 
-    // Load 6 values from the call data.
+    // Load t values from the call data.
     // The function has a single array param param
-    // [Selector (4)] [Pointer (32)][Length (32)] [data1 (32)] ....
-    // We ignore the pointer and the length and just load 6 values to the state
-    // (Stack positions 0-5) If the array is shorter, we just set zeros.
+    // [Selector (4)] [item1 (32)] [item2 (32)] ....
+    // Stack positions 0-nInputs.
     for (let i=0; i<t; i++) {
-        C.push(0x44+(0x20*(5-i)));
+        C.push(0x04+(0x20*(nInputs-i)));
         C.calldataload();
     }
 
-    for (let i=0; i<nRoundsF+nRoundsP; i++) {
+    for (let i=0; i<nRoundsF+nRoundsP-1; i++) {
         ark(i);
         if ((i<nRoundsF/2) || (i>=nRoundsP+nRoundsF/2)) {
             for (let j=0; j<t; j++) {
@@ -142,6 +142,13 @@ function createCode(t, nRoundsF, nRoundsP, seed) {
         C.label(strLabel);
     }
 
+    C.push(toHex256(K[t-2][(nRoundsF+nRoundsP-1)*t]));  // K, st, q
+    C.dup(t+1); // q, K, st, q
+    C.swap(2);  // st[0], K, q, st\st[0]
+    C.addmod();  // st q
+
+    sigma(0);
+
     C.push("0x00");
     C.mstore();     // Save it to pos 0;
     C.push("0x20");
@@ -153,18 +160,42 @@ function createCode(t, nRoundsF, nRoundsP, seed) {
     return C.createTxData();
 }
 
-module.exports.abi = [
+function generateABI(nInputs) {
+    return [
         {
             "constant": true,
             "inputs": [
                 {
+                    "internalType": `bytes32[${nInputs}]`,
                     "name": "input",
-                "type": "uint256[]"
+                    "type": `bytes32[${nInputs}]`
                 }
             ],
             "name": "poseidon",
             "outputs": [
                 {
+                    "internalType": "bytes32",
+                    "name": "",
+                    "type": "bytes32"
+                }
+            ],
+            "payable": false,
+            "stateMutability": "pure",
+            "type": "function"
+        },
+        {
+            "constant": true,
+            "inputs": [
+                {
+                    "internalType": `uint256[${nInputs}]`,
+                    "name": "input",
+                    "type": `uint256[${nInputs}]`
+                }
+            ],
+            "name": "poseidon",
+            "outputs": [
+                {
+                    "internalType": "uint256",
                     "name": "",
                     "type": "uint256"
                 }
@@ -174,7 +205,9 @@ module.exports.abi = [
             "type": "function"
         }
     ];
+}
 
+module.exports.generateABI = generateABI;
 module.exports.createCode = createCode;
 
 

src/poseidon_printconstants.js

@@ -1,16 +0,0 @@
-
-
-const Poseidon = require("./poseidon.js");
-
-const C = Poseidon.getConstants();
-
-let S = "[\n";
-
-for (let i=0; i<C.length; i++) {
-    S = S + "    " + C[i].toString();
-    if (i<C.length-1) S = S + ",";
-    S = S + "\n";
-}
-S=S+ "]\n";
-
-console.log(S);

src/poseidon_printcontract.js

@@ -1,5 +1,13 @@
 const poseidonGenContract = require("./poseidon_gencontract");
 
+if (process.argv.length != 3) {
+    console.log("Usage: node poseidon_gencontract.js [numberOfInputs]");
+    process.exit(1);
+}
 
-console.log(poseidonGenContract.createCode(6, 8, 57));
+const nInputs = Number(process.argv[2]);
+
+console.log(nInputs);
+
+console.log(poseidonGenContract.createCode(nInputs));
 

src/smt.js

@@ -1,7 +1,6 @@
-const bigInt = require("snarkjs").bigInt;
-
+const Scalar = require("ffjavascript").Scalar;
 const SMTMemDB = require("./smt_memdb");
-const {hash0, hash1} = require("./smt_hashes_poseidon");
+const {hash0, hash1, F} = require("./smt_hashes_poseidon");
 
 class SMT {
 
@@ -11,18 +10,7 @@ class SMT {
     }
 
     _splitBits(_key) {
-
-        let k = bigInt(_key);
-        const res = [];
-
-        while (!k.isZero()) {
-            if (k.isOdd()) {
-                res.push(true);
-            } else {
-                res.push(false);
-            }
-            k = k.shr(1);
-        }
+        const res = Scalar.bits(_key);
 
         while (res.length<256) res.push(false);
 
@@ -30,8 +18,8 @@ class SMT {
     }
 
     async update(_key, _newValue) {
-        const key = bigInt(_key);
-        const newValue = bigInt(_newValue);
+        const key = Scalar.e(_key);
+        const newValue = F.e(_newValue);
 
 
         const resFind = await this.find(key);
@@ -70,16 +58,16 @@ class SMT {
 
         res.newRoot = rtNew;
 
+        await this.db.multiDel(dels);
         await this.db.multiIns(ins);
         await this.db.setRoot(rtNew);
         this.root = rtNew;
-        await this.db.multiDel(dels);
 
         return res;
     }
 
     async delete(_key) {
-        const key = bigInt(_key);
+        const key = Scalar.e(_key);
 
         const resFind = await this.find(key);
         if (!resFind.found) throw new Error("Key does not exists");
@@ -99,7 +87,7 @@ class SMT {
         let mixed;
         if (resFind.siblings.length > 0) {
             const record = await this.db.get(resFind.siblings[resFind.siblings.length - 1]);
-            if ((record.length == 3)&&(record[0].equals(bigInt.one))) {
+            if ((record.length == 3)&&(F.eq(record[0], F.one))) {
                 mixed = false;
                 res.oldKey = record[1];
                 res.oldValue = record[2];
@@ -108,16 +96,16 @@ class SMT {
             } else if (record.length == 2) {
                 mixed = true;
                 res.oldKey = key;
-                res.oldValue = bigInt(0);
+                res.oldValue = F.zero;
                 res.isOld0 = true;
-                rtNew = bigInt.zero;
+                rtNew = F.zero;
             } else {
                 throw new Error("Invalid node. Database corrupted");
             }
         } else {
-            rtNew = bigInt.zero;
+            rtNew = F.zero;
             res.oldKey = key;
-            res.oldValue = bigInt(0);
+            res.oldValue = F.zero;
             res.isOld0 = true;
         }
 
@@ -126,7 +114,7 @@ class SMT {
         for (let level = resFind.siblings.length-1; level >=0; level--) {
             let newSibling = resFind.siblings[level];
             if ((level == resFind.siblings.length-1)&&(!res.isOld0)) {
-                newSibling = bigInt.zero;
+                newSibling = F.zero;
             }
             const oldSibling = resFind.siblings[level];
             if (keyBits[level]) {
@@ -135,7 +123,7 @@ class SMT {
                 rtOld = hash0(rtOld, oldSibling);
             }
             dels.push(rtOld);
-            if (!newSibling.isZero()) {
+            if (!F.isZero(newSibling)) {
                 mixed = true;
             }
 
@@ -164,8 +152,8 @@ class SMT {
     }
 
     async insert(_key, _value) {
-        const key = bigInt(_key);
-        const value = bigInt(_value);
+        const key = Scalar.e(_key);
+        const value = F.e(_value);
         let addedOne = false;
         const res = {};
         res.oldRoot = this.root;
@@ -183,7 +171,7 @@ class SMT {
         if (!resFind.isOld0) {
             const oldKeyits = this._splitBits(resFind.notFoundKey);
             for (let i= res.siblings.length; oldKeyits[i] == newKeyBits[i]; i++) {
-                res.siblings.push(bigInt.zero);
+                res.siblings.push(F.zero);
             }
             rtOld = hash1(resFind.notFoundKey, resFind.notFoundValue);
             res.siblings.push(rtOld);
@@ -191,7 +179,7 @@ class SMT {
             mixed = false;
         } else if (res.siblings.length >0) {
             mixed = true;
-            rtOld = bigInt.zero;
+            rtOld = F.zero;
         }
 
         const inserts = [];
@@ -201,7 +189,7 @@ class SMT {
         inserts.push([rt,[1, key, value]] );
 
         for (let i=res.siblings.length-1; i>=0; i--) {
-            if ((i<res.siblings.length-1)&&(!res.siblings[i].isZero())) {
+            if ((i<res.siblings.length-1)&&(!F.isZero(res.siblings[i]))) {
                 mixed = true;
             }
             if (mixed) {
@@ -227,7 +215,7 @@ class SMT {
         }
 
         if (addedOne) res.siblings.pop();
-        while ((res.siblings.length>0) && (res.siblings[res.siblings.length-1].isZero())) {
+        while ((res.siblings.length>0) && (F.isZero(res.siblings[res.siblings.length-1]))) {
             res.siblings.pop();
         }
         res.oldKey = resFind.notFoundKey;
@@ -253,12 +241,12 @@ class SMT {
         if (typeof root === "undefined") root = this.root;
 
         let res;
-        if (root.isZero()) {
+        if (F.isZero(root)) {
             res = {
                 found: false,
                 siblings: [],
                 notFoundKey: key,
-                notFoundValue: bigInt.zero,
+                notFoundValue: F.zero,
                 isOld0: true
             };
             return res;
@@ -266,8 +254,8 @@ class SMT {
 
         const record = await this.db.get(root);
 
-        if ((record.length==3)&&(record[0].equals(bigInt.one))) {
-            if (record[1].equals(key)) {
+        if ((record.length==3)&&(F.eq(record[0],F.one))) {
+            if (F.eq(record[1],key)) {
                 res = {
                     found: true,
                     siblings: [],
@@ -309,3 +297,5 @@ async function newMemEmptyTrie() {
 
 module.exports.loadFromFile = loadFromFile;
 module.exports.newMemEmptyTrie = newMemEmptyTrie;
+module.exports.SMT = SMT;
+module.exports.SMTMemDB = SMTMemDB;

src/smt_hashes_mimc.js

@@ -1,5 +1,5 @@
 const mimc7 = require("./mimc7");
-const bigInt = require("snarkjs").bigInt;
+const bigInt = require("big-integer");
 
 exports.hash0 = function (left, right) {
     return mimc7.multiHash(left, right);
@@ -8,3 +8,5 @@ exports.hash0 = function (left, right) {
 exports.hash1 = function(key, value) {
     return mimc7.multiHash([key, value], bigInt.one);
 };
+
+exports.F = mimc7.F;

src/smt_hashes_poseidon.js

@@ -1,12 +1,18 @@
-const Poseidon = require("./poseidon");
-const bigInt = require("snarkjs").bigInt;
 
-const hash = Poseidon.createHash(6, 8, 57);
+const ZqField = require("ffjavascript").ZqField;
+const Scalar = require("ffjavascript").Scalar;
+
+const poseidon = require("./poseidon");
+
+const F = new ZqField(Scalar.fromString("21888242871839275222246405745257275088548364400416034343698204186575808495617"));
+
 
 exports.hash0 = function (left, right) {
-    return hash([left, right]);
+    return poseidon([left, right]);
 };
 
 exports.hash1 = function(key, value) {
-    return hash([key, value, bigInt.one]);
+    return poseidon([key, value, F.one]);
 };
+
+exports.F = F;

src/smt_memdb.js

@@ -1,9 +1,14 @@
-const bigInt = require("snarkjs").bigInt;
+
+const Scalar = require("ffjavascript").Scalar;
+const ZqField = require("ffjavascript").ZqField;
+
+// Prime 0x30644e72e131a029b85045b68181585d2833e84879b9709143e1f593f0000001
+const F = new ZqField(Scalar.fromString("21888242871839275222246405745257275088548364400416034343698204186575808495617"));
 
 class SMTMemDb {
     constructor() {
         this.nodes = {};
-        this.root = bigInt(0);
+        this.root = F.zero;
     }
 
     async getRoot() {
@@ -12,13 +17,13 @@ class SMTMemDb {
 
     _key2str(k) {
         // const keyS = bigInt(key).leInt2Buff(32).toString("hex");
-        const keyS = bigInt(k).toString();
+        const keyS = k.toString();
         return keyS;
     }
 
     _normalize(n) {
         for (let i=0; i<n.length; i++) {
-            n[i] = bigInt(n[i]);
+            n[i] = F.e(n[i]);
         }
     }
 
@@ -27,6 +32,14 @@ class SMTMemDb {
         return this.nodes[keyS];
     }
 
+    async multiGet(keys) {
+        const promises = [];
+        for (let i=0; i<keys.length; i++) {
+            promises.push(this.get(keys[i]));
+        }
+        return await Promise.all(promises);
+    }
+
     async setRoot(rt) {
         this.root = rt;
     }

test/aliascheck.js

@@ -1,11 +1,15 @@
 const chai = require("chai");
 const path = require("path");
-const snarkjs = require("snarkjs");
-const compiler = require("circom");
 
 const assert = chai.assert;
 
-const bigInt = snarkjs.bigInt;
+const Scalar = require("ffjavascript").Scalar;
+const F1Field = require("ffjavascript").F1Field;
+const utils = require("ffjavascript").utils;
+const q = Scalar.fromString("21888242871839275222246405745257275088548364400416034343698204186575808495617");
+const F = new F1Field(q);
+
+const tester = require("circom").tester;
 
 function print(circuit, w, s) {
     console.log(s + ": " + w[circuit.getSignalIdx(s)]);
@@ -14,60 +18,59 @@ function print(circuit, w, s) {
 function getBits(v, n) {
     const res = [];
     for (let i=0; i<n; i++) {
-        if (v.shr(i).isOdd()) {
-            res.push(bigInt.one);
+        if (Scalar.isOdd(Scalar.shr(v,i))) {
+            res.push(F.one);
         } else {
-            res.push(bigInt.zero);
+            res.push(F.zero);
         }
     }
     return res;
 }
 
-const q = bigInt("21888242871839275222246405745257275088548364400416034343698204186575808495617");
 
-describe("Aliascheck test", () => {
-    let circuit;
+describe("Aliascheck test", function () {
+    this.timeout(100000);
+
+    let cir;
     before( async() => {
-        const cirDef = await compiler(path.join(__dirname, "circuits", "aliascheck_test.circom"));
 
-        circuit = new snarkjs.Circuit(cirDef);
-
-        console.log("NConstrains: " + circuit.nConstraints);
+        cir = await tester(path.join(__dirname, "circuits", "aliascheck_test.circom"));
     });
 
     it("Satisfy the aliastest 0", async () => {
-        const inp = getBits(bigInt.zero, 254);
-        circuit.calculateWitness({in: inp});
+        const inp = getBits(0, 254);
+        await cir.calculateWitness({in: inp}, true);
     });
 
     it("Satisfy the aliastest 3", async () => {
-        const inp = getBits(bigInt(3), 254);
-        circuit.calculateWitness({in: inp});
+        const inp = getBits(3, 254);
+        await cir.calculateWitness({in: inp}, true);
     });
 
     it("Satisfy the aliastest q-1", async () => {
-        const inp = getBits(q.sub(bigInt.one), 254);
-        circuit.calculateWitness({in: inp});
+        const inp = getBits(F.minusone, 254);
+        // console.log(JSON.stringify(utils.stringifyBigInts(inp)));
+        await cir.calculateWitness({in: inp}, true);
     });
 
-    it("Nhot not satisfy an input of q", async () => {
+    it("Should not satisfy an input of q", async () => {
         const inp = getBits(q, 254);
         try {
-            circuit.calculateWitness({in: inp});
+            await cir.calculateWitness({in: inp}, true);
             assert(false);
         } catch(err) {
-            assert.equal(err.message, "Constraint doesn't match: 1 != 0");
+            assert(/Constraint\sdoesn't\smatch(.*)1\s!=\s0/.test(err.message) );
         }
     });
 
-    it("Nhot not satisfy all ones", async () => {
+    it("Should not satisfy all ones", async () => {
 
-        const inp = getBits(bigInt(1).shl(254).sub(bigInt(1)), 254);
+        const inp = getBits(Scalar.sub(Scalar.shl(1, 254) , 1) , 254);
         try {
-            circuit.calculateWitness({in: inp});
+            await cir.calculateWitness({in: inp}, true);
             assert(false);
         } catch(err) {
-                assert.equal(err.message, "Constraint doesn't match: 1 != 0");
+            assert(/Constraint\sdoesn't\smatch(.*)1\s!=\s0/.test(err.message) );
         }
     });
 

test/babyjub.js

@@ -1,106 +1,93 @@
 const chai = require("chai");
 const path = require("path");
-const snarkjs = require("snarkjs");
-const compiler = require("circom");
 
 const createBlakeHash = require("blake-hash");
 const eddsa = require("../src/eddsa.js");
+const F = require("../src/babyjub.js").F;
 
 const assert = chai.assert;
 
-const bigInt = require("snarkjs").bigInt;
+const tester = require("circom").tester;
+const utils = require("ffjavascript").utils;
+const Scalar = require("ffjavascript").Scalar;
 
 describe("Baby Jub test", function () {
     let circuitAdd;
     let circuitTest;
+    let circuitPbk;
 
     this.timeout(100000);
 
     before( async() => {
-        const cirDefAdd = await compiler(path.join(__dirname, "circuits", "babyadd_tester.circom"));
-        circuitAdd = new snarkjs.Circuit(cirDefAdd);
-        console.log("NConstrains BabyAdd: " + circuitAdd.nConstraints);
+        circuitAdd = await tester(path.join(__dirname, "circuits", "babyadd_tester.circom"));
 
-        const cirDefTest = await compiler(path.join(__dirname, "circuits", "babycheck_test.circom"));
-        circuitTest = new snarkjs.Circuit(cirDefTest);
-        console.log("NConstrains BabyTest: " + circuitTest.nConstraints);
-
-        const cirDefPbk = await compiler(path.join(__dirname, "circuits", "babypbk_test.circom"));
-        circuitPbk = new snarkjs.Circuit(cirDefPbk);
-        console.log("NConstrains BabyPbk: " + circuitPbk.nConstraints);
+        circuitTest = await tester(path.join(__dirname, "circuits", "babycheck_test.circom"));
 
+        circuitPbk = await tester(path.join(__dirname, "circuits", "babypbk_test.circom"));
     });
 
     it("Should add point (0,1) and (0,1)", async () => {
 
         const input={
-            x1: snarkjs.bigInt(0),
-            y1: snarkjs.bigInt(1),
-            x2: snarkjs.bigInt(0),
-            y2: snarkjs.bigInt(1)
+            x1: F.e(0),
+            y1: F.e(1),
+            x2: F.e(0),
+            y2: F.e(1)
         };
 
-        const w = circuitAdd.calculateWitness(input);
+        const w = await circuitAdd.calculateWitness(input, true);
 
-        const xout = w[circuitAdd.getSignalIdx("main.xout")];
-        const yout = w[circuitAdd.getSignalIdx("main.yout")];
-
-        assert(xout.equals(0));
-        assert(yout.equals(1));
+        await circuitAdd.assertOut(w, {xout: F.e(0), yout: F.e(1)});
     });
 
     it("Should add 2 same numbers", async () => {
 
         const input={
-            x1: snarkjs.bigInt("17777552123799933955779906779655732241715742912184938656739573121738514868268"),
-            y1: snarkjs.bigInt("2626589144620713026669568689430873010625803728049924121243784502389097019475"),
-            x2: snarkjs.bigInt("17777552123799933955779906779655732241715742912184938656739573121738514868268"),
-            y2: snarkjs.bigInt("2626589144620713026669568689430873010625803728049924121243784502389097019475")
+            x1: F.e("17777552123799933955779906779655732241715742912184938656739573121738514868268"),
+            y1: F.e("2626589144620713026669568689430873010625803728049924121243784502389097019475"),
+            x2: F.e("17777552123799933955779906779655732241715742912184938656739573121738514868268"),
+            y2: F.e("2626589144620713026669568689430873010625803728049924121243784502389097019475")
         };
 
-        const w = circuitAdd.calculateWitness(input);
+        const w = await circuitAdd.calculateWitness(input, true);
 
-        const xout = w[circuitAdd.getSignalIdx("main.xout")];
-        const yout = w[circuitAdd.getSignalIdx("main.yout")];
+        await circuitAdd.assertOut(w, {
+            xout: F.e("6890855772600357754907169075114257697580319025794532037257385534741338397365"),
+            yout: F.e("4338620300185947561074059802482547481416142213883829469920100239455078257889")
+        });
 
-        assert(xout.equals(snarkjs.bigInt("6890855772600357754907169075114257697580319025794532037257385534741338397365")));
-        assert(yout.equals(snarkjs.bigInt("4338620300185947561074059802482547481416142213883829469920100239455078257889")));
     });
 
     it("Should add 2 different numbers", async () => {
 
         const input={
-            x1: snarkjs.bigInt("17777552123799933955779906779655732241715742912184938656739573121738514868268"),
-            y1: snarkjs.bigInt("2626589144620713026669568689430873010625803728049924121243784502389097019475"),
-            x2: snarkjs.bigInt("16540640123574156134436876038791482806971768689494387082833631921987005038935"),
-            y2: snarkjs.bigInt("20819045374670962167435360035096875258406992893633759881276124905556507972311")
+            x1: F.e("17777552123799933955779906779655732241715742912184938656739573121738514868268"),
+            y1: F.e("2626589144620713026669568689430873010625803728049924121243784502389097019475"),
+            x2: F.e("16540640123574156134436876038791482806971768689494387082833631921987005038935"),
+            y2: F.e("20819045374670962167435360035096875258406992893633759881276124905556507972311")
         };
 
-        const w = circuitAdd.calculateWitness(input);
+        const w = await circuitAdd.calculateWitness(input, true);
 
-        const xout = w[circuitAdd.getSignalIdx("main.xout")];
-        const yout = w[circuitAdd.getSignalIdx("main.yout")];
-
-        /*
-        console.log(xout.toString());
-        console.log(yout.toString());
-        */
-
-        assert(xout.equals(snarkjs.bigInt("7916061937171219682591368294088513039687205273691143098332585753343424131937")));
-        assert(yout.equals(snarkjs.bigInt("14035240266687799601661095864649209771790948434046947201833777492504781204499")));
+        await circuitAdd.assertOut(w, {
+            xout: F.e("7916061937171219682591368294088513039687205273691143098332585753343424131937"),
+            yout: F.e("14035240266687799601661095864649209771790948434046947201833777492504781204499")
         });
 
-    it("Should check 0 is a valid poiny", async() => {
-        const w = circuitTest.calculateWitness({x: 0, y:1});
-        assert(circuitTest.checkWitness(w));
     });
 
-    it("Should check 0 is an invalid poiny", async() => {
+    it("Should check (0,1) is a valid point", async() => {
+        const w = await circuitTest.calculateWitness({x: 0, y:1}, true);
+
+        await circuitTest.checkConstraints(w);
+    });
+
+    it("Should check (1,0) is an invalid point", async() => {
         try {
-            circuitTest.calculateWitness({x: 1, y: 0});
+            await circuitTest.calculateWitness({x: 1, y: 0}, true);
             assert(false, "Should be a valid point");
         } catch(err) {
-            assert.equal(err.message, "Constraint doesn't match: 168700 != 1");
+            assert(/Constraint\sdoesn't\smatch(.*)168700\s!=\s1/.test(err.message) );
         }
     });
 
@@ -108,18 +95,19 @@ describe("Baby Jub test", function () {
 
         const rawpvk = Buffer.from("0001020304050607080900010203040506070809000102030405060708090021", "hex");
         const pvk    = eddsa.pruneBuffer(createBlakeHash("blake512").update(rawpvk).digest().slice(0,32));
-        const S      = bigInt.leBuff2int(pvk).shr(3);
+        const S      = Scalar.shr(utils.leBuff2int(pvk), 3);
 
         const A      = eddsa.prv2pub(rawpvk);
 
         const input = {
-            in : S,
-            Ax : A[0],
-            Ay : A[1]
-        }
+            in : S
+        };
 
-        const w = circuitPbk.calculateWitness(input);
-        assert(circuitPbk.checkWitness(w));
+        const w = await circuitPbk.calculateWitness(input, true);
+
+        await circuitPbk.assertOut(w, {Ax : A[0], Ay: A[1]});
+
+        await circuitPbk.checkConstraints(w);
     });
 
 });

test/babyjub_js.js

@@ -1,8 +1,6 @@
 const chai = require("chai");
-const path = require("path");
-const snarkjs = require("snarkjs");
-const compiler = require("circom");
 const babyjub = require("../src/babyjub.js");
+const Scalar = require("ffjavascript").Scalar;
 
 const assert = chai.assert;
 
@@ -16,16 +14,16 @@ describe("Baby Jub js test", function () {
     it("Should add point (0,1) and (0,1)", () => {
 
         const p1 = [
-            snarkjs.bigInt(0),
-            snarkjs.bigInt(1)];
+            babyjub.F.e(0),
+            babyjub.F.e(1)];
         const p2 = [
-            snarkjs.bigInt(0),
-            snarkjs.bigInt(1)
+            babyjub.F.e(0),
+            babyjub.F.e(1)
         ];
 
-        const out = babyjub.addPoint(p1, p2)
-        assert(out[0].equals(0));
-        assert(out[1].equals(1));
+        const out = babyjub.addPoint(p1, p2);
+        assert(babyjub.F.eq(out[0], babyjub.F.zero));
+        assert(babyjub.F.eq(out[1], babyjub.F.one));
     });
 
     it("Should base be 8*generator", () => {
@@ -34,50 +32,50 @@ describe("Baby Jub js test", function () {
         res = babyjub.addPoint(res, res);
         res = babyjub.addPoint(res, res);
 
-        assert(res[0].equals(babyjub.Base8[0]));
-        assert(res[1].equals(babyjub.Base8[1]));
+        assert(babyjub.F.eq(res[0], babyjub.Base8[0]));
+        assert(babyjub.F.eq(res[1], babyjub.Base8[1]));
     });
 
     it("Should add 2 same numbers", () => {
 
         const p1 = [
-            snarkjs.bigInt("17777552123799933955779906779655732241715742912184938656739573121738514868268"),
-            snarkjs.bigInt("2626589144620713026669568689430873010625803728049924121243784502389097019475"),
+            babyjub.F.e("17777552123799933955779906779655732241715742912184938656739573121738514868268"),
+            babyjub.F.e("2626589144620713026669568689430873010625803728049924121243784502389097019475"),
         ];
         const p2 = [
-            snarkjs.bigInt("17777552123799933955779906779655732241715742912184938656739573121738514868268"),
-            snarkjs.bigInt("2626589144620713026669568689430873010625803728049924121243784502389097019475"),
+            babyjub.F.e("17777552123799933955779906779655732241715742912184938656739573121738514868268"),
+            babyjub.F.e("2626589144620713026669568689430873010625803728049924121243784502389097019475"),
         ];
 
-        const out = babyjub.addPoint(p1, p2)
-        assert(out[0].equals(snarkjs.bigInt("6890855772600357754907169075114257697580319025794532037257385534741338397365")));
-        assert(out[1].equals(snarkjs.bigInt("4338620300185947561074059802482547481416142213883829469920100239455078257889")));
+        const out = babyjub.addPoint(p1, p2);
+        assert(babyjub.F.eq(out[0], babyjub.F.e("6890855772600357754907169075114257697580319025794532037257385534741338397365")));
+        assert(babyjub.F.eq(out[1], babyjub.F.e("4338620300185947561074059802482547481416142213883829469920100239455078257889")));
     });
 
     it("Should add 2 different numbers", () => {
 
         const p1 = [
-            snarkjs.bigInt("17777552123799933955779906779655732241715742912184938656739573121738514868268"),
-            snarkjs.bigInt("2626589144620713026669568689430873010625803728049924121243784502389097019475"),
+            babyjub.F.e("17777552123799933955779906779655732241715742912184938656739573121738514868268"),
+            babyjub.F.e("2626589144620713026669568689430873010625803728049924121243784502389097019475"),
         ];
         const p2 = [
-            snarkjs.bigInt("16540640123574156134436876038791482806971768689494387082833631921987005038935"),
-            snarkjs.bigInt("20819045374670962167435360035096875258406992893633759881276124905556507972311"),
+            babyjub.F.e("16540640123574156134436876038791482806971768689494387082833631921987005038935"),
+            babyjub.F.e("20819045374670962167435360035096875258406992893633759881276124905556507972311"),
         ];
 
-        const out = babyjub.addPoint(p1, p2)
+        const out = babyjub.addPoint(p1, p2);
+        assert(babyjub.F.eq(out[0], babyjub.F.e("7916061937171219682591368294088513039687205273691143098332585753343424131937")));
+        assert(babyjub.F.eq(out[1], babyjub.F.e("14035240266687799601661095864649209771790948434046947201833777492504781204499")));
 
-        assert(out[0].equals(snarkjs.bigInt("7916061937171219682591368294088513039687205273691143098332585753343424131937")));
-        assert(out[1].equals(snarkjs.bigInt("14035240266687799601661095864649209771790948434046947201833777492504781204499")));
     });
 
     it("should mulPointEscalar 0", () => {
         const p = [
-            snarkjs.bigInt("17777552123799933955779906779655732241715742912184938656739573121738514868268"),
-            snarkjs.bigInt("2626589144620713026669568689430873010625803728049924121243784502389097019475"),
+            babyjub.F.e("17777552123799933955779906779655732241715742912184938656739573121738514868268"),
+            babyjub.F.e("2626589144620713026669568689430873010625803728049924121243784502389097019475"),
         ];
 
-        const r = babyjub.mulPointEscalar(p, snarkjs.bigInt("3"));
+        const r = babyjub.mulPointEscalar(p, 3);
         let r2 = babyjub.addPoint(p, p);
         r2 = babyjub.addPoint(r2, p);
         assert.equal(r2[0].toString(), r[0].toString());
@@ -88,65 +86,65 @@ describe("Baby Jub js test", function () {
 
     it("should mulPointEscalar 1", () => {
         const p = [
-            snarkjs.bigInt("17777552123799933955779906779655732241715742912184938656739573121738514868268"),
-            snarkjs.bigInt("2626589144620713026669568689430873010625803728049924121243784502389097019475"),
+            babyjub.F.e("17777552123799933955779906779655732241715742912184938656739573121738514868268"),
+            babyjub.F.e("2626589144620713026669568689430873010625803728049924121243784502389097019475"),
         ];
 
-        const r = babyjub.mulPointEscalar(p, snarkjs.bigInt("14035240266687799601661095864649209771790948434046947201833777492504781204499"));
+        const r = babyjub.mulPointEscalar(p, Scalar.fromString("14035240266687799601661095864649209771790948434046947201833777492504781204499"));
         assert.equal(r[0].toString(), "17070357974431721403481313912716834497662307308519659060910483826664480189605");
         assert.equal(r[1].toString(), "4014745322800118607127020275658861516666525056516280575712425373174125159339");
     });
 
     it("should mulPointEscalar 2", () => {
         const p = [
-            snarkjs.bigInt("6890855772600357754907169075114257697580319025794532037257385534741338397365"),
-            snarkjs.bigInt("4338620300185947561074059802482547481416142213883829469920100239455078257889"),
+            babyjub.F.e("6890855772600357754907169075114257697580319025794532037257385534741338397365"),
+            babyjub.F.e("4338620300185947561074059802482547481416142213883829469920100239455078257889"),
         ];
 
-        const r = babyjub.mulPointEscalar(p, snarkjs.bigInt("20819045374670962167435360035096875258406992893633759881276124905556507972311"));
+        const r = babyjub.mulPointEscalar(p, Scalar.fromString("20819045374670962167435360035096875258406992893633759881276124905556507972311"));
         assert.equal(r[0].toString(), "13563888653650925984868671744672725781658357821216877865297235725727006259983");
         assert.equal(r[1].toString(), "8442587202676550862664528699803615547505326611544120184665036919364004251662");
     });
 
     it("should inCurve 1", () => {
         const p = [
-            snarkjs.bigInt("17777552123799933955779906779655732241715742912184938656739573121738514868268"),
-            snarkjs.bigInt("2626589144620713026669568689430873010625803728049924121243784502389097019475"),
+            babyjub.F.e("17777552123799933955779906779655732241715742912184938656739573121738514868268"),
+            babyjub.F.e("2626589144620713026669568689430873010625803728049924121243784502389097019475"),
         ];
         assert(babyjub.inCurve(p));
     });
 
     it("should inCurve 2", () => {
         const p = [
-            snarkjs.bigInt("6890855772600357754907169075114257697580319025794532037257385534741338397365"),
-            snarkjs.bigInt("4338620300185947561074059802482547481416142213883829469920100239455078257889"),
+            babyjub.F.e("6890855772600357754907169075114257697580319025794532037257385534741338397365"),
+            babyjub.F.e("4338620300185947561074059802482547481416142213883829469920100239455078257889"),
         ];
         assert(babyjub.inCurve(p));
     });
 
     it("should inSubgroup 1", () => {
         const p = [
-            snarkjs.bigInt("17777552123799933955779906779655732241715742912184938656739573121738514868268"),
-            snarkjs.bigInt("2626589144620713026669568689430873010625803728049924121243784502389097019475"),
+            babyjub.F.e("17777552123799933955779906779655732241715742912184938656739573121738514868268"),
+            babyjub.F.e("2626589144620713026669568689430873010625803728049924121243784502389097019475"),
         ];
         assert(babyjub.inSubgroup(p));
     });
 
     it("should inSubgroup 2", () => {
         const p = [
-            snarkjs.bigInt("6890855772600357754907169075114257697580319025794532037257385534741338397365"),
-            snarkjs.bigInt("4338620300185947561074059802482547481416142213883829469920100239455078257889"),
+            babyjub.F.e("6890855772600357754907169075114257697580319025794532037257385534741338397365"),
+            babyjub.F.e("4338620300185947561074059802482547481416142213883829469920100239455078257889"),
         ];
         assert(babyjub.inSubgroup(p));
     });
 
     it("should packPoint - unpackPoint 1", () => {
         const p = [
-            snarkjs.bigInt("17777552123799933955779906779655732241715742912184938656739573121738514868268"),
-            snarkjs.bigInt("2626589144620713026669568689430873010625803728049924121243784502389097019475"),
+            babyjub.F.e("17777552123799933955779906779655732241715742912184938656739573121738514868268"),
+            babyjub.F.e("2626589144620713026669568689430873010625803728049924121243784502389097019475"),
         ];
         const buf = babyjub.packPoint(p);
-        assert.equal(buf.toString('hex'), '53b81ed5bffe9545b54016234682e7b2f699bd42a5e9eae27ff4051bc698ce85');
+        assert.equal(buf.toString("hex"), "53b81ed5bffe9545b54016234682e7b2f699bd42a5e9eae27ff4051bc698ce85");
         const p2 = babyjub.unpackPoint(buf);
         assert.equal(p2[0].toString(), "17777552123799933955779906779655732241715742912184938656739573121738514868268");
         assert.equal(p2[1].toString(), "2626589144620713026669568689430873010625803728049924121243784502389097019475");
@@ -154,11 +152,11 @@ describe("Baby Jub js test", function () {
 
     it("should packPoint - unpackPoint 2", () => {
         const p = [
-            snarkjs.bigInt("6890855772600357754907169075114257697580319025794532037257385534741338397365"),
-            snarkjs.bigInt("4338620300185947561074059802482547481416142213883829469920100239455078257889"),
+            babyjub.F.e("6890855772600357754907169075114257697580319025794532037257385534741338397365"),
+            babyjub.F.e("4338620300185947561074059802482547481416142213883829469920100239455078257889"),
         ];
         const buf = babyjub.packPoint(p);
-        assert.equal(buf.toString('hex'), 'e114eb17eddf794f063a68fecac515e3620e131976108555735c8b0773929709');
+        assert.equal(buf.toString("hex"), "e114eb17eddf794f063a68fecac515e3620e131976108555735c8b0773929709");
         const p2 = babyjub.unpackPoint(buf);
         assert.equal(p2[0].toString(), "6890855772600357754907169075114257697580319025794532037257385534741338397365");
         assert.equal(p2[1].toString(), "4338620300185947561074059802482547481416142213883829469920100239455078257889");

test/binsub.js

@@ -1,55 +1,52 @@
-const chai = require("chai");
 const path = require("path");
-const snarkjs = require("snarkjs");
-const compiler = require("circom");
 
-const assert = chai.assert;
-
-const bigInt = snarkjs.bigInt;
+const Fr = require("ffjavascript").bn128.Fr;
+const Scalar = require("ffjavascript").Scalar;
+const tester = require("circom").tester;
 
 function print(circuit, w, s) {
     console.log(s + ": " + w[circuit.getSignalIdx(s)]);
 }
 
-function checkSub(_a,_b, circuit) {
-    let a=bigInt(_a);
-    let b=bigInt(_b);
-    if (a.lesser(bigInt.zero)) a = a.add(bigInt.one.shl(16));
-    if (b.lesser(bigInt.zero)) b = b.add(bigInt.one.shl(16));
-    const w = circuit.calculateWitness({a: a, b: b});
+async function checkSub(_a,_b, circuit) {
+    let a=Scalar.e(_a);
+    let b=Scalar.e(_b);
+    if (Scalar.lt(a, 0)) a = Scalar.add(a, Scalar.shl(1, 16));
+    if (Scalar.lt(b, 0)) b = Scalar.add(b, Scalar.shl(1, 16));
+    const w = await circuit.calculateWitness({a: a, b: b}, true);
 
-    let res = a.sub(b);
-    if (res.lesser(bigInt.zero)) res = res.add(bigInt.one.shl(16));
-    assert( w[circuit.getSignalIdx("main.out")].equals(bigInt(res)) );
+    let res = Scalar.sub(a, b);
+    if (Scalar.lt(res, 0)) res = Scalar.add(res, Scalar.shl(1, 16));
+
+    await circuit.assertOut(w, {out: res});
 }
 
-describe("BinSub test", () => {
+describe("BinSub test", function () {
+
+    this.timeout(100000);
+
     let circuit;
     before( async() => {
-        const cirDef = await compiler(path.join(__dirname, "circuits", "binsub_test.circom"));
-
-        circuit = new snarkjs.Circuit(cirDef);
-
-        console.log("NConstrains BinSub: " + circuit.nConstraints);
+        circuit = await tester(path.join(__dirname, "circuits", "binsub_test.circom"));
     });
 
     it("Should check variuos ege cases", async () => {
-        checkSub(0,0, circuit);
-        checkSub(1,0, circuit);
-        checkSub(-1,0, circuit);
-        checkSub(2,1, circuit);
-        checkSub(2,2, circuit);
-        checkSub(2,3, circuit);
-        checkSub(2,-1, circuit);
-        checkSub(2,-2, circuit);
-        checkSub(2,-3, circuit);
-        checkSub(-2,-3, circuit);
-        checkSub(-2,-2, circuit);
-        checkSub(-2,-1, circuit);
-        checkSub(-2,0, circuit);
-        checkSub(-2,1, circuit);
-        checkSub(-2,2, circuit);
-        checkSub(-2,3, circuit);
+        await checkSub(0,0, circuit);
+        await checkSub(1,0, circuit);
+        await checkSub(-1,0, circuit);
+        await checkSub(2,1, circuit);
+        await checkSub(2,2, circuit);
+        await checkSub(2,3, circuit);
+        await checkSub(2,-1, circuit);
+        await checkSub(2,-2, circuit);
+        await checkSub(2,-3, circuit);
+        await checkSub(-2,-3, circuit);
+        await checkSub(-2,-2, circuit);
+        await checkSub(-2,-1, circuit);
+        await checkSub(-2,0, circuit);
+        await checkSub(-2,1, circuit);
+        await checkSub(-2,2, circuit);
+        await checkSub(-2,3, circuit);
     });
 
 

test/binsum.js

@@ -1,35 +1,37 @@
 const chai = require("chai");
 const path = require("path");
-const snarkjs = require("snarkjs");
-const crypto = require("crypto");
 
-const compiler = require("circom");
+const tester = require("circom").tester;
+
+const Fr = require("ffjavascript").bn128.Fr;
 
 const assert = chai.assert;
 
-describe("Sum test", () => {
+describe("Binary sum test", function () {
+
+    this.timeout(100000000);
+
     it("Should create a constant circuit", async () => {
+        const circuit = await tester(path.join(__dirname, "circuits", "constants_test.circom"));
+        await circuit.loadConstraints();
 
-        const cirDef = await compiler(path.join(__dirname, "circuits", "constants_test.circom"));
-        assert.equal(cirDef.nVars, 2);
+        assert.equal(circuit.nVars, 2);
+        assert.equal(circuit.constraints.length, 1);
 
-        const circuit = new snarkjs.Circuit(cirDef);
+        const witness = await circuit.calculateWitness({ "in": Fr.e("d807aa98", 16)}, true);
 
-        const witness = circuit.calculateWitness({ "in": "0xd807aa98" });
-
-        assert(witness[0].equals(snarkjs.bigInt(1)));
-        assert(witness[1].equals(snarkjs.bigInt("0xd807aa98")));
+        assert(Fr.eq(witness[0],Fr.e(1)));
+        assert(Fr.eq(witness[1],Fr.e("d807aa98", 16)));
     });
     it("Should create a sum circuit", async () => {
+        const circuit = await tester(path.join(__dirname, "circuits", "sum_test.circom"));
+        await circuit.loadConstraints();
 
-        const cirDef = await compiler(path.join(__dirname, "circuits", "sum_test.circom"));
-        assert.equal(cirDef.nVars, 101);
+        assert.equal(circuit.constraints.length, 97);  // 32 (in1) + 32(in2) + 32(out) + 1 (carry)
 
-        const circuit = new snarkjs.Circuit(cirDef);
+        const witness = await circuit.calculateWitness({ "a": "111", "b": "222" }, true);
 
-        const witness = circuit.calculateWitness({ "a": "111", "b": "222" });
-
-        assert(witness[0].equals(snarkjs.bigInt(1)));
-        assert(witness[1].equals(snarkjs.bigInt("333")));
+        assert(Fr.eq(witness[0],Fr.e(1)));
+        assert(Fr.eq(witness[1],Fr.e("333")));
     });
 });

test/circuits/binsub_test.circom

@@ -6,6 +6,8 @@ template A() {
     signal input b;
     signal output out;
 
+    var i;
+
     component n2ba = Num2Bits(16);
     component n2bb = Num2Bits(16);
     component sub = BinSub(16);
@@ -14,9 +16,12 @@ template A() {
     n2ba.in <== a;
     n2bb.in <== b;
 
-    for (var i=0; i<16; i++) {
+    for (i=0; i<16; i++) {
         sub.in[0][i] <== n2ba.out[i];
         sub.in[1][i] <== n2bb.out[i];
+    }
+
+    for (i=0; i<16; i++) {
         b2n.in[i] <== sub.out[i];
     }
 

test/circuits/escalarmul_min_test.circom

@@ -8,7 +8,7 @@ template Main() {
     var i;
 
     var base = [5299619240641551281634865583518297030282874472190772894086521144482721001553,
-                16950150798460657717958625567821834550301663161624707787222815936182638968203]
+                16950150798460657717958625567821834550301663161624707787222815936182638968203];
 
     component escalarMul = EscalarMul(256, base);
 

test/circuits/escalarmul_test.circom

@@ -6,8 +6,8 @@ template Main() {
     signal input in;
     signal output out[2];
 
-    var base = [5299619240641551281634865583518297030282874472190772894086521144482721001553,
-            16950150798460657717958625567821834550301663161624707787222815936182638968203]
+    var base[2] = [5299619240641551281634865583518297030282874472190772894086521144482721001553,
+            16950150798460657717958625567821834550301663161624707787222815936182638968203];
 
 
     component n2b = Num2Bits(253);

test/circuits/escalarmul_test_min.circom

@@ -7,8 +7,8 @@ template Main() {
 
     var i;
 
-    var base = [5299619240641551281634865583518297030282874472190772894086521144482721001553,
-                16950150798460657717958625567821834550301663161624707787222815936182638968203]
+    var base[2] = [5299619240641551281634865583518297030282874472190772894086521144482721001553,
+                   16950150798460657717958625567821834550301663161624707787222815936182638968203];
 
     component escalarMul = EscalarMul(256, base);
 

test/circuits/escalarmulfix_test.circom

@@ -6,7 +6,7 @@ template Main() {
     signal input e;
     signal output out[2];
 
-    var base = [5299619240641551281634865583518297030282874472190772894086521144482721001553,
+    var base[2] = [5299619240641551281634865583518297030282874472190772894086521144482721001553,
                    16950150798460657717958625567821834550301663161624707787222815936182638968203]
 
 

test/circuits/escalarmulw4table.circom

@@ -1,6 +1,6 @@
 include "../../circuits/escalarmulw4table.circom";
 
-var base = [5299619240641551281634865583518297030282874472190772894086521144482721001553,
+var base[2] = [5299619240641551281634865583518297030282874472190772894086521144482721001553,
             16950150798460657717958625567821834550301663161624707787222815936182638968203]
 
 component main = EscalarMulW4Table(base, 0);

test/circuits/escalarmulw4table_test.circom

@@ -4,13 +4,13 @@ include "../../circuits/escalarmulw4table.circom";
 template Main() {
     signal input in;
     signal output out[16][2];
-    var base = [5299619240641551281634865583518297030282874472190772894086521144482721001553,
+    var base[2] = [5299619240641551281634865583518297030282874472190772894086521144482721001553,
                 16950150798460657717958625567821834550301663161624707787222815936182638968203];
 
-    component escalarMul = EscalarMulW4Table(base, 0);
+    var escalarMul[16][2] = EscalarMulW4Table(base, 0);
     for (var i=0; i<16; i++) {
-        out[i][0] <== escalarMul.out[i][0]*in;
-        out[i][1] <== escalarMul.out[i][1]*in;
+        out[i][0] <== escalarMul[i][0]*in;
+        out[i][1] <== escalarMul[i][1]*in;
     }
 }
 

test/circuits/escalarmulw4table_test3.circom

@@ -4,13 +4,13 @@ include "../../circuits/escalarmulw4table.circom";
 template Main() {
     signal input in;
     signal output out[16][2];
-    var base = [5299619240641551281634865583518297030282874472190772894086521144482721001553,
+    var base[2] = [5299619240641551281634865583518297030282874472190772894086521144482721001553,
                    16950150798460657717958625567821834550301663161624707787222815936182638968203];
 
-    component escalarMul = EscalarMulW4Table(base, 3);
+    var escalarMul[16][2] = EscalarMulW4Table(base, 3);
     for (var i=0; i<16; i++) {
-        out[i][0] <== escalarMul.out[i][0]*in;
-        out[i][1] <== escalarMul.out[i][1]*in;
+        out[i][0] <== escalarMul[i][0]*in;
+        out[i][1] <== escalarMul[i][1]*in;
     }
 }
 

test/circuits/poseidon3_test.circom

@@ -1,3 +1,3 @@
 include "../../circuits/poseidon.circom"
 
-component main = Poseidon(2, 6, 8, 57);
+component main = Poseidon(2);

test/circuits/poseidon6_test.circom

@@ -0,0 +1,3 @@
+include "../../circuits/poseidon.circom"
+
+component main = Poseidon(5);

test/circuits/sum_test.circom

@@ -6,6 +6,8 @@ template A() {
     signal input b;
     signal output out;
 
+    var i;
+
     component n2ba = Num2Bits(32);
     component n2bb = Num2Bits(32);
     component sum = BinSum(32,2);
@@ -14,9 +16,12 @@ template A() {
     n2ba.in <== a;
     n2bb.in <== b;
 
-    for (var i=0; i<32; i++) {
+    for (i=0; i<32; i++) {
         sum.in[0][i] <== n2ba.out[i];
         sum.in[1][i] <== n2bb.out[i];
+    }
+
+    for (i=0; i<32; i++) {
         b2n.in[i] <== sum.out[i];
     }
 

test/comparators.js

@@ -1,193 +1,185 @@
 const chai = require("chai");
 const path = require("path");
-const snarkjs = require("snarkjs");
-const crypto = require("crypto");
 
-const compiler = require("circom");
+const tester = require("circom").tester;
+
+const Fr = require("ffjavascript").bn128.Fr;
 
 const assert = chai.assert;
 
-describe("Sum test", () => {
-    it("Should create a iszero circuit", async() => {
-        const cirDef = await compiler(path.join(__dirname, "circuits", "iszero.circom"));
+describe("Comparators test", function ()  {
 
-        const circuit = new snarkjs.Circuit(cirDef);
+    this.timeout(100000);
+
+    it("Should create a iszero circuit", async() => {
+        const circuit = await tester(path.join(__dirname, "circuits", "iszero.circom"));
 
         let witness;
-        witness = circuit.calculateWitness({ "in": 111});
-        assert(witness[0].equals(snarkjs.bigInt(1)));
-        assert(witness[1].equals(snarkjs.bigInt(0)));
+        witness = await circuit.calculateWitness({ "in": 111}, true);
+        assert(Fr.eq(witness[0], Fr.e(1)));
+        assert(Fr.eq(witness[1], Fr.e(0)));
 
-        witness = circuit.calculateWitness({ "in": 0 });
-        assert(witness[0].equals(snarkjs.bigInt(1)));
-        assert(witness[1].equals(snarkjs.bigInt(1)));
+        witness = await circuit.calculateWitness({ "in": 0 }, true);
+        assert(Fr.eq(witness[0], Fr.e(1)));
+        assert(Fr.eq(witness[1], Fr.e(1)));
     });
     it("Should create a isequal circuit", async() => {
-        const cirDef = await compiler(path.join(__dirname, "circuits", "isequal.circom"));
-
-        const circuit = new snarkjs.Circuit(cirDef);
+        const circuit = await tester(path.join(__dirname, "circuits", "isequal.circom"));
 
         let witness;
-        witness = circuit.calculateWitness({ "in[0]": "111", "in[1]": "222" });
-        assert(witness[0].equals(snarkjs.bigInt(1)));
-        assert(witness[1].equals(snarkjs.bigInt(0)));
+        witness = await circuit.calculateWitness({ "in": [111,222] }, true);
+        assert(Fr.eq(witness[0], Fr.e(1)));
+        assert(Fr.eq(witness[1], Fr.e(0)));
 
-        witness = circuit.calculateWitness({ "in[0]": "444", "in[1]": "444" });
-        assert(witness[0].equals(snarkjs.bigInt(1)));
-        assert(witness[1].equals(snarkjs.bigInt(1)));
+
+        witness = await circuit.calculateWitness({ "in": [444,444] }, true);
+        assert(Fr.eq(witness[0], Fr.e(1)));
+        assert(Fr.eq(witness[1], Fr.e(1)));
     });
     it("Should create a comparison lessthan", async() => {
-        const cirDef = await compiler(path.join(__dirname, "circuits", "lessthan.circom"));
-
-        const circuit = new snarkjs.Circuit(cirDef);
+        const circuit = await tester(path.join(__dirname, "circuits", "lessthan.circom"));
 
         let witness;
-        witness = circuit.calculateWitness({ "in[0]": "333", "in[1]": "444" });
-        assert(witness[0].equals(snarkjs.bigInt(1)));
-        assert(witness[1].equals(snarkjs.bigInt(1)));
+        witness = await circuit.calculateWitness({ "in": [333,444] }), true;
+        assert(Fr.eq(witness[0], Fr.e(1)));
+        assert(Fr.eq(witness[1], Fr.e(1)));
 
-        witness = circuit.calculateWitness({ "in[0]": "1", "in[1]": "1" });
-        assert(witness[0].equals(snarkjs.bigInt(1)));
-        assert(witness[1].equals(snarkjs.bigInt(0)));
+        witness = await circuit.calculateWitness({ "in":[1,1] }, true);
+        assert(Fr.eq(witness[0], Fr.e(1)));
+        assert(Fr.eq(witness[1], Fr.e(0)));
 
-        witness = circuit.calculateWitness({ "in[0]": "661", "in[1]": "660" });
-        assert(witness[0].equals(snarkjs.bigInt(1)));
-        assert(witness[1].equals(snarkjs.bigInt(0)));
+        witness = await circuit.calculateWitness({ "in": [661, 660] }, true);
+        assert(Fr.eq(witness[0], Fr.e(1)));
+        assert(Fr.eq(witness[1], Fr.e(0)));
 
-        witness = circuit.calculateWitness({ "in[0]": "0", "in[1]": "1" });
-        assert(witness[0].equals(snarkjs.bigInt(1)));
-        assert(witness[1].equals(snarkjs.bigInt(1)));
+        witness = await circuit.calculateWitness({ "in": [0, 1] }, true);
+        assert(Fr.eq(witness[0], Fr.e(1)));
+        assert(Fr.eq(witness[1], Fr.e(1)));
 
-        witness = circuit.calculateWitness({ "in[0]": "0", "in[1]": "444" });
-        assert(witness[0].equals(snarkjs.bigInt(1)));
-        assert(witness[1].equals(snarkjs.bigInt(1)));
+        witness = await circuit.calculateWitness({ "in": [0, 444] }, true);
+        assert(Fr.eq(witness[0], Fr.e(1)));
+        assert(Fr.eq(witness[1], Fr.e(1)));
 
-        witness = circuit.calculateWitness({ "in[0]": "1", "in[1]": "0" });
-        assert(witness[0].equals(snarkjs.bigInt(1)));
-        assert(witness[1].equals(snarkjs.bigInt(0)));
+        witness = await circuit.calculateWitness({ "in": [1, 0] }, true);
+        assert(Fr.eq(witness[0], Fr.e(1)));
+        assert(Fr.eq(witness[1], Fr.e(0)));
 
-        witness = circuit.calculateWitness({ "in[0]": "555", "in[1]": "0" });
-        assert(witness[0].equals(snarkjs.bigInt(1)));
-        assert(witness[1].equals(snarkjs.bigInt(0)));
+        witness = await circuit.calculateWitness({ "in": [555, 0] }, true);
+        assert(Fr.eq(witness[0], Fr.e(1)));
+        assert(Fr.eq(witness[1], Fr.e(0)));
 
-        witness = circuit.calculateWitness({ "in[0]": "0", "in[1]": "0" });
-        assert(witness[0].equals(snarkjs.bigInt(1)));
-        assert(witness[1].equals(snarkjs.bigInt(0)));
+        witness = await circuit.calculateWitness({ "in": [0, 0] }, true);
+        assert(Fr.eq(witness[0], Fr.e(1)));
+        assert(Fr.eq(witness[1], Fr.e(0)));
     });
     it("Should create a comparison lesseqthan", async() => {
-        const cirDef = await compiler(path.join(__dirname, "circuits", "lesseqthan.circom"));
 
-        const circuit = new snarkjs.Circuit(cirDef);
+        const circuit = await tester(path.join(__dirname, "circuits", "lesseqthan.circom"));
 
         let witness;
-        witness = circuit.calculateWitness({ "in[0]": "333", "in[1]": "444" });
-        assert(witness[0].equals(snarkjs.bigInt(1)));
-        assert(witness[1].equals(snarkjs.bigInt(1)));
+        witness = await circuit.calculateWitness({ "in": [333,444] }, true);
+        assert(Fr.eq(witness[0], Fr.e(1)));
+        assert(Fr.eq(witness[1], Fr.e(1)));
 
-        witness = circuit.calculateWitness({ "in[0]": "1", "in[1]": "1" });
-        assert(witness[0].equals(snarkjs.bigInt(1)));
-        assert(witness[1].equals(snarkjs.bigInt(1)));
+        witness = await circuit.calculateWitness({ "in":[1,1] }, true);
+        assert(Fr.eq(witness[0], Fr.e(1)));
+        assert(Fr.eq(witness[1], Fr.e(1)));
 
-        witness = circuit.calculateWitness({ "in[0]": "661", "in[1]": "660" });
-        assert(witness[0].equals(snarkjs.bigInt(1)));
-        assert(witness[1].equals(snarkjs.bigInt(0)));
+        witness = await circuit.calculateWitness({ "in": [661, 660] }, true);
+        assert(Fr.eq(witness[0], Fr.e(1)));
+        assert(Fr.eq(witness[1], Fr.e(0)));
 
-        witness = circuit.calculateWitness({ "in[0]": "0", "in[1]": "1" });
-        assert(witness[0].equals(snarkjs.bigInt(1)));
-        assert(witness[1].equals(snarkjs.bigInt(1)));
+        witness = await circuit.calculateWitness({ "in": [0, 1] }, true);
+        assert(Fr.eq(witness[0], Fr.e(1)));
+        assert(Fr.eq(witness[1], Fr.e(1)));
 
-        witness = circuit.calculateWitness({ "in[0]": "0", "in[1]": "444" });
-        assert(witness[0].equals(snarkjs.bigInt(1)));
-        assert(witness[1].equals(snarkjs.bigInt(1)));
+        witness = await circuit.calculateWitness({ "in": [0, 444] }, true);
+        assert(Fr.eq(witness[0], Fr.e(1)));
+        assert(Fr.eq(witness[1], Fr.e(1)));
 
-        witness = circuit.calculateWitness({ "in[0]": "1", "in[1]": "0" });
-        assert(witness[0].equals(snarkjs.bigInt(1)));
-        assert(witness[1].equals(snarkjs.bigInt(0)));
+        witness = await circuit.calculateWitness({ "in": [1, 0] }, true);
+        assert(Fr.eq(witness[0], Fr.e(1)));
+        assert(Fr.eq(witness[1], Fr.e(0)));
 
-        witness = circuit.calculateWitness({ "in[0]": "555", "in[1]": "0" });
-        assert(witness[0].equals(snarkjs.bigInt(1)));
-        assert(witness[1].equals(snarkjs.bigInt(0)));
+        witness = await circuit.calculateWitness({ "in": [555, 0] }, true);
+        assert(Fr.eq(witness[0], Fr.e(1)));
+        assert(Fr.eq(witness[1], Fr.e(0)));
 
-        witness = circuit.calculateWitness({ "in[0]": "0", "in[1]": "0" });
-        assert(witness[0].equals(snarkjs.bigInt(1)));
-        assert(witness[1].equals(snarkjs.bigInt(1)));
+        witness = await circuit.calculateWitness({ "in": [0, 0] }, true);
+        assert(Fr.eq(witness[0], Fr.e(1)));
+        assert(Fr.eq(witness[1], Fr.e(1)));
     });
     it("Should create a comparison greaterthan", async() => {
-        const cirDef = await compiler(path.join(__dirname, "circuits", "greaterthan.circom"));
 
-        const circuit = new snarkjs.Circuit(cirDef);
+        const circuit = await tester(path.join(__dirname, "circuits", "greaterthan.circom"));
 
         let witness;
-        witness = circuit.calculateWitness({ "in[0]": "333", "in[1]": "444" });
-        assert(witness[0].equals(snarkjs.bigInt(1)));
-        assert(witness[1].equals(snarkjs.bigInt(0)));
+        witness = await circuit.calculateWitness({ "in": [333,444] }, true);
+        assert(Fr.eq(witness[0], Fr.e(1)));
+        assert(Fr.eq(witness[1], Fr.e(0)));
 
-        witness = circuit.calculateWitness({ "in[0]": "1", "in[1]": "1" });
-        assert(witness[0].equals(snarkjs.bigInt(1)));
-        assert(witness[1].equals(snarkjs.bigInt(0)));
+        witness = await circuit.calculateWitness({ "in":[1,1] }, true);
+        assert(Fr.eq(witness[0], Fr.e(1)));
+        assert(Fr.eq(witness[1], Fr.e(0)));
 
-        witness = circuit.calculateWitness({ "in[0]": "661", "in[1]": "660" });
-        assert(witness[0].equals(snarkjs.bigInt(1)));
-        assert(witness[1].equals(snarkjs.bigInt(1)));
+        witness = await circuit.calculateWitness({ "in": [661, 660] }, true);
+        assert(Fr.eq(witness[0], Fr.e(1)));
+        assert(Fr.eq(witness[1], Fr.e(1)));
 
-        witness = circuit.calculateWitness({ "in[0]": "0", "in[1]": "1" });
-        assert(witness[0].equals(snarkjs.bigInt(1)));
-        assert(witness[1].equals(snarkjs.bigInt(0)));
+        witness = await circuit.calculateWitness({ "in": [0, 1] }, true);
+        assert(Fr.eq(witness[0], Fr.e(1)));
+        assert(Fr.eq(witness[1], Fr.e(0)));
 
-        witness = circuit.calculateWitness({ "in[0]": "0", "in[1]": "444" });
-        assert(witness[0].equals(snarkjs.bigInt(1)));
-        assert(witness[1].equals(snarkjs.bigInt(0)));
+        witness = await circuit.calculateWitness({ "in": [0, 444] }, true);
+        assert(Fr.eq(witness[0], Fr.e(1)));
+        assert(Fr.eq(witness[1], Fr.e(0)));
 
-        witness = circuit.calculateWitness({ "in[0]": "1", "in[1]": "0" });
-        assert(witness[0].equals(snarkjs.bigInt(1)));
-        assert(witness[1].equals(snarkjs.bigInt(1)));
+        witness = await circuit.calculateWitness({ "in": [1, 0] }, true);
+        assert(Fr.eq(witness[0], Fr.e(1)));
+        assert(Fr.eq(witness[1], Fr.e(1)));
 
-        witness = circuit.calculateWitness({ "in[0]": "555", "in[1]": "0" });
-        assert(witness[0].equals(snarkjs.bigInt(1)));
-        assert(witness[1].equals(snarkjs.bigInt(1)));
+        witness = await circuit.calculateWitness({ "in": [555, 0] }, true);
+        assert(Fr.eq(witness[0], Fr.e(1)));
+        assert(Fr.eq(witness[1], Fr.e(1)));
 
-        witness = circuit.calculateWitness({ "in[0]": "0", "in[1]": "0" });
-        assert(witness[0].equals(snarkjs.bigInt(1)));
-        assert(witness[1].equals(snarkjs.bigInt(0)));
+        witness = await circuit.calculateWitness({ "in": [0, 0] }, true);
+        assert(Fr.eq(witness[0], Fr.e(1)));
+        assert(Fr.eq(witness[1], Fr.e(0)));
     });
     it("Should create a comparison greatereqthan", async() => {
-        const cirDef = await compiler(path.join(__dirname, "circuits", "greatereqthan.circom"));
-
-        const circuit = new snarkjs.Circuit(cirDef);
-
-        console.log("NConstraints BalancesUpdater: " + circuit.nConstraints);
+        const circuit = await tester(path.join(__dirname, "circuits", "greatereqthan.circom"));
 
         let witness;
-        witness = circuit.calculateWitness({ "in[0]": "333", "in[1]": "444" });
-        assert(witness[0].equals(snarkjs.bigInt(1)));
-        assert(witness[1].equals(snarkjs.bigInt(0)));
+        witness = await circuit.calculateWitness({ "in": [333,444] }, true);
+        assert(Fr.eq(witness[0], Fr.e(1)));
+        assert(Fr.eq(witness[1], Fr.e(0)));
 
-        witness = circuit.calculateWitness({ "in[0]": "1", "in[1]": "1" });
-        assert(witness[0].equals(snarkjs.bigInt(1)));
-        assert(witness[1].equals(snarkjs.bigInt(1)));
+        witness = await circuit.calculateWitness({ "in":[1,1] }, true);
+        assert(Fr.eq(witness[0], Fr.e(1)));
+        assert(Fr.eq(witness[1], Fr.e(1)));
 
-        witness = circuit.calculateWitness({ "in[0]": "661", "in[1]": "660" });
-        assert(witness[0].equals(snarkjs.bigInt(1)));
-        assert(witness[1].equals(snarkjs.bigInt(1)));
+        witness = await circuit.calculateWitness({ "in": [661, 660] }, true);
+        assert(Fr.eq(witness[0], Fr.e(1)));
+        assert(Fr.eq(witness[1], Fr.e(1)));
 
-        witness = circuit.calculateWitness({ "in[0]": "0", "in[1]": "1" });
-        assert(witness[0].equals(snarkjs.bigInt(1)));
-        assert(witness[1].equals(snarkjs.bigInt(0)));
+        witness = await circuit.calculateWitness({ "in": [0, 1] }, true);
+        assert(Fr.eq(witness[0], Fr.e(1)));
+        assert(Fr.eq(witness[1], Fr.e(0)));
 
-        witness = circuit.calculateWitness({ "in[0]": "0", "in[1]": "444" });
-        assert(witness[0].equals(snarkjs.bigInt(1)));
-        assert(witness[1].equals(snarkjs.bigInt(0)));
+        witness = await circuit.calculateWitness({ "in": [0, 444] }, true);
+        assert(Fr.eq(witness[0], Fr.e(1)));
+        assert(Fr.eq(witness[1], Fr.e(0)));
 
-        witness = circuit.calculateWitness({ "in[0]": "1", "in[1]": "0" });
-        assert(witness[0].equals(snarkjs.bigInt(1)));
-        assert(witness[1].equals(snarkjs.bigInt(1)));
+        witness = await circuit.calculateWitness({ "in": [1, 0] }, true);
+        assert(Fr.eq(witness[0], Fr.e(1)));
+        assert(Fr.eq(witness[1], Fr.e(1)));
 
-        witness = circuit.calculateWitness({ "in[0]": "555", "in[1]": "0" });
-        assert(witness[0].equals(snarkjs.bigInt(1)));
-        assert(witness[1].equals(snarkjs.bigInt(1)));
+        witness = await circuit.calculateWitness({ "in": [555, 0] }, true);
+        assert(Fr.eq(witness[0], Fr.e(1)));
+        assert(Fr.eq(witness[1], Fr.e(1)));
 
-        witness = circuit.calculateWitness({ "in[0]": "0", "in[1]": "0" });
-        assert(witness[0].equals(snarkjs.bigInt(1)));
-        assert(witness[1].equals(snarkjs.bigInt(1)));
+        witness = await circuit.calculateWitness({ "in": [0, 0] }, true);
+        assert(Fr.eq(witness[0], Fr.e(1)));
+        assert(Fr.eq(witness[1], Fr.e(1)));
     });
 });

test/eddsa.js

@@ -1,16 +1,14 @@
 const chai = require("chai");
 const path = require("path");
-const snarkjs = require("snarkjs");
-const compiler = require("circom");
-// const crypto = require("crypto");
+
+const tester = require("circom").tester;
+const Fr = require("ffjavascript").bn128.Fr;
 
 const eddsa = require("../src/eddsa.js");
 const babyJub = require("../src/babyjub.js");
 
 const assert = chai.assert;
 
-const bigInt = snarkjs.bigInt;
-
 function print(circuit, w, s) {
     console.log(s + ": " + w[circuit.getSignalIdx(s)]);
 }
@@ -20,9 +18,9 @@ function buffer2bits(buff) {
     for (let i=0; i<buff.length; i++) {
         for (let j=0; j<8; j++) {
             if ((buff[i]>>j)&1) {
-                res.push(bigInt.one);
+                res.push(Fr.one);
             } else {
-                res.push(bigInt.zero);
+                res.push(Fr.zero);
             }
         }
     }
@@ -36,11 +34,7 @@ describe("EdDSA test", function () {
     this.timeout(100000);
 
     before( async () => {
-        const cirDef = await compiler(path.join(__dirname, "circuits", "eddsa_test.circom"));
-
-        circuit = new snarkjs.Circuit(cirDef);
-
-        console.log("NConstrains EdDSA: " + circuit.nConstraints);
+        circuit = await tester(path.join(__dirname, "circuits", "eddsa_test.circom"));
     });
 
     it("Sign a single 10 bytes from 0 to 9", async () => {
@@ -66,9 +60,8 @@ describe("EdDSA test", function () {
         const sBits = buffer2bits(pSignature.slice(32, 64));
         const aBits = buffer2bits(pPubKey);
 
-        const w = circuit.calculateWitness({A: aBits, R8: r8Bits, S: sBits, msg: msgBits});
-
-        assert(circuit.checkWitness(w));
+        const w = await circuit.calculateWitness({A: aBits, R8: r8Bits, S: sBits, msg: msgBits}, true);
 
+        await circuit.checkConstraints(w);
     });
 });

test/eddsa_js.js

@@ -1,12 +1,11 @@
 const chai = require("chai");
-const snarkjs = require("snarkjs");
 
 const eddsa = require("../src/eddsa.js");
 const babyJub = require("../src/babyjub.js");
 
 const assert = chai.assert;
 
-const bigInt = snarkjs.bigInt;
+const utils = require("ffjavascript").utils;
 
 describe("EdDSA js test", function () {
 
@@ -14,7 +13,7 @@ describe("EdDSA js test", function () {
 
     it("Sign (using Mimc7) a single 10 bytes from 0 to 9", () => {
         const msgBuf = Buffer.from("00010203040506070809", "hex");
-        const msg = bigInt.leBuff2int(msgBuf);
+        const msg = utils.leBuff2int(msgBuf);
 
         //  const prvKey = crypto.randomBytes(32);
 
@@ -49,7 +48,7 @@ describe("EdDSA js test", function () {
 
     it("Sign (using Poseidon) a single 10 bytes from 0 to 9", () => {
         const msgBuf = Buffer.from("00010203040506070809", "hex");
-        const msg = bigInt.leBuff2int(msgBuf);
+        const msg = utils.leBuff2int(msgBuf);
 
         const prvKey = Buffer.from("0001020304050607080900010203040506070809000102030405060708090001", "hex");
 
@@ -68,12 +67,12 @@ describe("EdDSA js test", function () {
         assert.equal(signature.R8[1].toString(),
             "15383486972088797283337779941324724402501462225528836549661220478783371668959");
         assert.equal(signature.S.toString(),
-            "248298168863866362217836334079793350221620631973732197668910946177382043688");
+            "1398758333392199195742243841591064350253744445503462896781493968760929513778");
 
         const pSignature = eddsa.packSignature(signature);
         assert.equal(pSignature.toString("hex"), ""+
             "dfedb4315d3f2eb4de2d3c510d7a987dcab67089c8ace06308827bf5bcbe02a2"+
-            "28506bce274aa1b3f7e7c2fd7e4fe09bff8f9aa37a42def7994e98f322888c00");
+            "32f16b0f2f4c4e1169aa59685637e1429b6581a9531d058d65f4ab224eab1703");
 
         const uSignature = eddsa.unpackSignature(pSignature);
         assert(eddsa.verifyPoseidon(msg, uSignature, pubKey));

test/eddsamimc.js

@@ -1,29 +1,25 @@
 const chai = require("chai");
 const path = require("path");
-const snarkjs = require("snarkjs");
-const compiler = require("circom");
+const tester = require("circom").tester;
+
+const Fr = require("ffjavascript").bn128.Fr;
 
 const eddsa = require("../src/eddsa.js");
 
 const assert = chai.assert;
 
-const bigInt = snarkjs.bigInt;
-
 describe("EdDSA MiMC test", function () {
     let circuit;
 
     this.timeout(100000);
 
     before( async () => {
-        const cirDef = await compiler(path.join(__dirname, "circuits", "eddsamimc_test.circom"));
 
-        circuit = new snarkjs.Circuit(cirDef);
-
-        console.log("NConstrains EdDSA MiMC: " + circuit.nConstraints);
+        circuit = await tester(path.join(__dirname, "circuits", "eddsamimc_test.circom"));
     });
 
     it("Sign a single number", async () => {
-        const msg = bigInt(1234);
+        const msg = Fr.e(1234);
 
         const prvKey = Buffer.from("0001020304050607080900010203040506070809000102030405060708090001", "hex");
 
@@ -33,20 +29,22 @@ describe("EdDSA MiMC test", function () {
 
         assert(eddsa.verifyMiMC(msg, signature, pubKey));
 
-        const w = circuit.calculateWitness({
+        const w = await circuit.calculateWitness({
             enabled: 1,
             Ax: pubKey[0],
             Ay: pubKey[1],
             R8x: signature.R8[0],
             R8y: signature.R8[1],
             S: signature.S,
-            M: msg});
+            M: msg}, true);
+
+
+        await circuit.checkConstraints(w);
 
-        assert(circuit.checkWitness(w));
     });
 
     it("Detect Invalid signature", async () => {
-        const msg = bigInt(1234);
+        const msg = Fr.e(1234);
 
         const prvKey = Buffer.from("0001020304050607080900010203040506070809000102030405060708090001", "hex");
 
@@ -57,23 +55,23 @@ describe("EdDSA MiMC test", function () {
 
         assert(eddsa.verifyMiMC(msg, signature, pubKey));
         try {
-            const w = circuit.calculateWitness({
+            const w = await circuit.calculateWitness({
                 enabled: 1,
                 Ax: pubKey[0],
                 Ay: pubKey[1],
-                R8x: signature.R8[0].add(bigInt(1)),
+                R8x: Fr.add(signature.R8[0], Fr.e(1)),
                 R8y: signature.R8[1],
                 S: signature.S,
-                M: msg});
+                M: msg}, true);
             assert(false);
         } catch(err) {
-            assert.equal(err.message, "Constraint doesn't match: 1 != 0");
+            assert(/Constraint\sdoesn't\smatch(.*)1\s!=\s0/.test(err.message) );
         }
     });
 
 
     it("Test a dissabled circuit with a bad signature", async () => {
-        const msg = bigInt(1234);
+        const msg = Fr.e(1234);
 
         const prvKey = Buffer.from("0001020304050607080900010203040506070809000102030405060708090001", "hex");
 
@@ -84,15 +82,16 @@ describe("EdDSA MiMC test", function () {
 
         assert(eddsa.verifyMiMC(msg, signature, pubKey));
 
-        const w = circuit.calculateWitness({
+        const w = await  circuit.calculateWitness({
             enabled: 0,
             Ax: pubKey[0],
             Ay: pubKey[1],
-            R8x: signature.R8[0].add(bigInt(1)),
+            R8x: Fr.add(signature.R8[0], Fr.e(1)),
             R8y: signature.R8[1],
             S: signature.S,
-            M: msg});
+            M: msg}, true);
+
+        await circuit.checkConstraints(w);
 
-        assert(circuit.checkWitness(w));
     });
 });

test/eddsaposeidon.js

@@ -1,29 +1,25 @@
 const chai = require("chai");
 const path = require("path");
-const snarkjs = require("snarkjs");
-const compiler = require("circom");
+const tester = require("circom").tester;
+const Fr = require("ffjavascript").bn128.Fr;
 
 const eddsa = require("../src/eddsa.js");
 
 const assert = chai.assert;
 
-const bigInt = snarkjs.bigInt;
-
 describe("EdDSA Poseidon test", function () {
     let circuit;
 
     this.timeout(100000);
 
     before( async () => {
-        const cirDef = await compiler(path.join(__dirname, "circuits", "eddsaposeidon_test.circom"));
 
-        circuit = new snarkjs.Circuit(cirDef);
+        circuit = await tester(path.join(__dirname, "circuits", "eddsaposeidon_test.circom"));
 
-        console.log("NConstrains EdDSA Poseidon: " + circuit.nConstraints);
     });
 
     it("Sign a single number", async () => {
-        const msg = bigInt(1234);
+        const msg = Fr.e(1234);
 
         const prvKey = Buffer.from("0001020304050607080900010203040506070809000102030405060708090001", "hex");
 
@@ -33,20 +29,25 @@ describe("EdDSA Poseidon test", function () {
 
         assert(eddsa.verifyPoseidon(msg, signature, pubKey));
 
-        const w = circuit.calculateWitness({
+        const input = {
             enabled: 1,
             Ax: pubKey[0],
             Ay: pubKey[1],
             R8x: signature.R8[0],
             R8y: signature.R8[1],
             S: signature.S,
-            M: msg});
+            M: msg
+        };
 
-        assert(circuit.checkWitness(w));
+        // console.log(JSON.stringify(utils.stringifyBigInts(input)));
+
+        const w = await circuit.calculateWitness(input, true);
+
+        await circuit.checkConstraints(w);
     });
 
     it("Detect Invalid signature", async () => {
-        const msg = bigInt(1234);
+        const msg = Fr.e(1234);
 
         const prvKey = Buffer.from("0001020304050607080900010203040506070809000102030405060708090001", "hex");
 
@@ -57,23 +58,23 @@ describe("EdDSA Poseidon test", function () {
 
         assert(eddsa.verifyPoseidon(msg, signature, pubKey));
         try {
-            circuit.calculateWitness({
+            await circuit.calculateWitness({
                 enabled: 1,
                 Ax: pubKey[0],
                 Ay: pubKey[1],
-                R8x: signature.R8[0].add(bigInt(1)),
+                R8x: Fr.add(signature.R8[0], Fr.e(1)),
                 R8y: signature.R8[1],
                 S: signature.S,
-                M: msg});
+                M: msg}, true);
             assert(false);
         } catch(err) {
-            assert.equal(err.message, "Constraint doesn't match: 1 != 0");
+            assert(/Constraint\sdoesn't\smatch(.*)1\s!=\s0/.test(err.message) );
         }
     });
 
 
     it("Test a dissabled circuit with a bad signature", async () => {
-        const msg = bigInt(1234);
+        const msg = Fr.e(1234);
 
         const prvKey = Buffer.from("0001020304050607080900010203040506070809000102030405060708090001", "hex");
 
@@ -84,15 +85,15 @@ describe("EdDSA Poseidon test", function () {
 
         assert(eddsa.verifyPoseidon(msg, signature, pubKey));
 
-        const w = circuit.calculateWitness({
+        const w = await circuit.calculateWitness({
             enabled: 0,
             Ax: pubKey[0],
             Ay: pubKey[1],
-            R8x: signature.R8[0].add(bigInt(1)),
+            R8x: Fr.add(signature.R8[0], Fr.e(1)),
             R8y: signature.R8[1],
             S: signature.S,
-            M: msg});
+            M: msg}, true);
 
-        assert(circuit.checkWitness(w));
+        await circuit.checkConstraints(w);
     });
 });

test/escalarmul.js

@@ -1,168 +1,115 @@
 const chai = require("chai");
 const path = require("path");
-const snarkjs = require("snarkjs");
-const compiler = require("circom");
+const tester = require("circom").tester;
+const babyJub = require("../src/babyjub.js");
+const Fr = require("ffjavascript").bn128.Fr;
+
 
 const assert = chai.assert;
 
-const bigInt = snarkjs.bigInt;
-
-
-const q=bigInt("21888242871839275222246405745257275088548364400416034343698204186575808495617");
-function addPoint(a,b) {
-    const cta = bigInt("168700");
-    const d = bigInt("168696");
-
-    const res = [];
-    res[0] = bigInt((a[0]*b[1] + b[0]*a[1]) *  bigInt(bigInt.one + d*a[0]*b[0]*a[1]*b[1]).inverse(q)).affine(q);
-    res[1] = bigInt((a[1]*b[1] - cta*a[0]*b[0]) * bigInt(bigInt.one - d*a[0]*b[0]*a[1]*b[1]).inverse(q)).affine(q);
-    return res;
-}
-
 function print(circuit, w, s) {
     console.log(s + ": " + w[circuit.getSignalIdx(s)]);
 }
 
-describe("Exponentioation test", () => {
+describe("Exponentioation test", function () {
+
+    this.timeout(100000);
+
     it("Should generate the Exponentiation table in k=0", async () => {
 
-        const cirDef = await compiler(path.join(__dirname, "circuits", "escalarmulw4table_test.circom"));
+        const circuit = await tester(path.join(__dirname, "circuits", "escalarmulw4table_test.circom"));
 
-//        console.log(JSON.stringify(cirDef, null, 1));
+        const w = await circuit.calculateWitness({in: 1});
 
-//        assert.equal(cirDef.nVars, 2);
+        await circuit.checkConstraints(w);
 
-        const circuit = new snarkjs.Circuit(cirDef);
+        let g = [
+            Fr.e("5299619240641551281634865583518297030282874472190772894086521144482721001553"),
+            Fr.e("16950150798460657717958625567821834550301663161624707787222815936182638968203")
+        ];
 
-        console.log("NConstrains: " + circuit.nConstraints);
+        let dbl= [Fr.e("0"), Fr.e("1")];
 
-        const w = circuit.calculateWitness({in: 1});
-
-        let g = [bigInt("5299619240641551281634865583518297030282874472190772894086521144482721001553"),
-                 bigInt("16950150798460657717958625567821834550301663161624707787222815936182638968203")]
-
-        dbl= [bigInt("0"), snarkjs.bigInt("1")];
+        const expectedOut = [];
 
         for (let i=0; i<16; i++) {
-            const xout1 = w[circuit.getSignalIdx(`main.out[${i}][0]`)];
-            const yout1 = w[circuit.getSignalIdx(`main.out[${i}][1]`)];
-/*
-            console.log(xout1.toString());
-            console.log(yout1.toString());
-            console.log(dbl[0]);
-            console.log(dbl[1]);
-*/
-            assert(xout1.equals(dbl[0]));
-            assert(yout1.equals(dbl[1]));
 
-            dbl = addPoint([xout1, yout1],g);
+            expectedOut.push(dbl);
+            dbl = babyJub.addPoint(dbl,g);
         }
 
+        await circuit.assertOut(w, {out: expectedOut});
+
     });
 
     it("Should generate the Exponentiation table in k=3", async () => {
 
-        const cirDef = await compiler(path.join(__dirname, "circuits", "escalarmulw4table_test3.circom"));
+        const circuit = await tester(path.join(__dirname, "circuits", "escalarmulw4table_test3.circom"));
 
-//        console.log(JSON.stringify(cirDef, null, 1));
+        const w = await circuit.calculateWitness({in: 1});
 
-//        assert.equal(cirDef.nVars, 2);
+        await circuit.checkConstraints(w);
 
-        const circuit = new snarkjs.Circuit(cirDef);
-
-        console.log("NConstrains: " + circuit.nConstraints);
-
-        const w = circuit.calculateWitness({in: 1});
-
-        let g = [snarkjs.bigInt("5299619240641551281634865583518297030282874472190772894086521144482721001553"),
-                 snarkjs.bigInt("16950150798460657717958625567821834550301663161624707787222815936182638968203")]
+        let g = [
+            Fr.e("5299619240641551281634865583518297030282874472190772894086521144482721001553"),
+            Fr.e("16950150798460657717958625567821834550301663161624707787222815936182638968203")
+        ];
 
         for (let i=0; i<12;i++) {
-            g = addPoint(g,g);
+            g = babyJub.addPoint(g,g);
         }
 
-        dbl= [snarkjs.bigInt("0"), snarkjs.bigInt("1")];
+        let dbl= [Fr.e("0"), Fr.e("1")];
+
+        const expectedOut = [];
 
         for (let i=0; i<16; i++) {
-            const xout1 = w[circuit.getSignalIdx(`main.out[${i}][0]`)];
-            const yout1 = w[circuit.getSignalIdx(`main.out[${i}][1]`)];
+            expectedOut.push(dbl);
 
-/*
-            console.log(xout1.toString());
-            console.log(yout1.toString());
-            console.log(dbl[0]);
-            console.log(dbl[1]);
-*/
-            assert(xout1.equals(dbl[0]));
-            assert(yout1.equals(dbl[1]));
-
-            dbl = addPoint([xout1, yout1],g);
+            dbl = babyJub.addPoint(dbl,g);
         }
 
+        await circuit.assertOut(w, {out: expectedOut});
+
     });
 
     it("Should exponentiate g^31", async () => {
-        const cirDef = await compiler(path.join(__dirname, "circuits", "escalarmul_test.circom"));
 
-//        console.log(JSON.stringify(cirDef, null, 1));
+        const circuit = await tester(path.join(__dirname, "circuits", "escalarmul_test.circom"));
 
-//        assert.equal(cirDef.nVars, 2);
+        const w = await circuit.calculateWitness({"in": 31});
 
-        const circuit = new snarkjs.Circuit(cirDef);
+        await circuit.checkConstraints(w);
 
-        console.log("NConstrains: " + circuit.nConstraints);
+        let g = [
+            Fr.e("5299619240641551281634865583518297030282874472190772894086521144482721001553"),
+            Fr.e("16950150798460657717958625567821834550301663161624707787222815936182638968203")
+        ];
 
-        const w = circuit.calculateWitness({"in": 31});
-
-        assert(circuit.checkWitness(w));
-
-        let g = [snarkjs.bigInt("5299619240641551281634865583518297030282874472190772894086521144482721001553"),
-                 snarkjs.bigInt("16950150798460657717958625567821834550301663161624707787222815936182638968203")]
-
-        let c = [0n, 1n];
+        let c = [Fr.e(0), Fr.e(1)];
 
         for (let i=0; i<31;i++) {
-            c = addPoint(c,g);
+            c = babyJub.addPoint(c,g);
         }
 
-        const xout = w[circuit.getSignalIdx(`main.out[0]`)];
-        const yout = w[circuit.getSignalIdx(`main.out[1]`)];
+        await circuit.assertOut(w, {out: c});
 
-/*
-        console.log(xout.toString());
-        console.log(yout.toString());
-*/
-        assert(xout.equals(c[0]));
-        assert(yout.equals(c[1]));
-
-        console.log("-------")
-        const w2 = circuit.calculateWitness({"in": (1n<<252n)+1n});
-
-        const xout2 = w2[circuit.getSignalIdx(`main.out[0]`)];
-        const yout2 = w2[circuit.getSignalIdx(`main.out[1]`)];
+        const w2 = await circuit.calculateWitness({"in": Fr.add(Fr.shl(Fr.e(1), Fr.e(252)),Fr.one)});
 
         c = [g[0], g[1]];
         for (let i=0; i<252;i++) {
-            c = addPoint(c,c);
+            c = babyJub.addPoint(c,c);
         }
-        c = addPoint(c,g);
-/*
-        console.log(xout2.toString());
-        console.log(yout2.toString());
-        console.log(c[0].toString());
-        console.log(c[1].toString());
-*/
-        assert(xout2.equals(c[0]));
-        assert(yout2.equals(c[1]));
+        c = babyJub.addPoint(c,g);
+
+        await circuit.assertOut(w2, {out: c});
 
     }).timeout(10000000);
 
     it("Number of constrains for 256 bits", async () => {
-        const cirDef = await compiler(path.join(__dirname, "circuits", "escalarmul_test_min.circom"));
 
-        const circuit = new snarkjs.Circuit(cirDef);
+        const circuit = await tester(path.join(__dirname, "circuits", "escalarmul_test_min.circom"));
 
-        console.log("NConstrains: " + circuit.nConstraints);
     }).timeout(10000000);
 
 });

test/escalarmulany.js

@@ -1,11 +1,7 @@
 const chai = require("chai");
 const path = require("path");
-const snarkjs = require("snarkjs");
-const compiler = require("circom");
-
-const assert = chai.assert;
-
-const bigInt = snarkjs.bigInt;
+const tester = require("circom").tester;
+const Fr = require("ffjavascript").bn128.Fr;
 
 
 function print(circuit, w, s) {
@@ -18,41 +14,33 @@ describe("Escalarmul test", function () {
     this.timeout(100000);
 
     let g = [
-        snarkjs.bigInt("5299619240641551281634865583518297030282874472190772894086521144482721001553"),
-        snarkjs.bigInt("16950150798460657717958625567821834550301663161624707787222815936182638968203")
+        Fr.e("5299619240641551281634865583518297030282874472190772894086521144482721001553"),
+        Fr.e("16950150798460657717958625567821834550301663161624707787222815936182638968203")
     ];
 
     before( async() => {
-        const cirDefEMulAny = await compiler(path.join(__dirname, "circuits", "escalarmulany_test.circom"));
-        circuitEMulAny = new snarkjs.Circuit(cirDefEMulAny);
-        console.log("NConstrains Escalarmul any: " + circuitEMulAny.nConstraints);
+        circuitEMulAny = await tester(path.join(__dirname, "circuits", "escalarmulany_test.circom"));
     });
 
     it("Should generate Same escalar mul", async () => {
 
-        const w = circuitEMulAny.calculateWitness({"e": 1, "p": g});
+        const w = await circuitEMulAny.calculateWitness({"e": 1, "p": g});
 
-        assert(circuitEMulAny.checkWitness(w));
+        await circuitEMulAny.checkConstraints(w);
 
-        const xout = w[circuitEMulAny.getSignalIdx("main.out[0]")];
-        const yout = w[circuitEMulAny.getSignalIdx("main.out[1]")];
+        await circuitEMulAny.assertOut(w, {out: g}, true);
 
-        assert(xout.equals(g[0]));
-        assert(yout.equals(g[1]));
     });
 
     it("If multiply by order should return 0", async () => {
 
-        const r = bigInt("2736030358979909402780800718157159386076813972158567259200215660948447373041");
-        const w = circuitEMulAny.calculateWitness({"e": r, "p": g});
+        const r = Fr.e("2736030358979909402780800718157159386076813972158567259200215660948447373041");
+        const w = await circuitEMulAny.calculateWitness({"e": r, "p": g});
 
-        assert(circuitEMulAny.checkWitness(w));
+        await circuitEMulAny.checkConstraints(w);
 
-        const xout = w[circuitEMulAny.getSignalIdx("main.out[0]")];
-        const yout = w[circuitEMulAny.getSignalIdx("main.out[1]")];
+        await circuitEMulAny.assertOut(w, {out: [0,1]}, true);
 
-        assert(xout.equals(bigInt.zero));
-        assert(yout.equals(bigInt.one));
     });
 
 });

test/escalarmulfix.js

@@ -1,14 +1,11 @@
 const chai = require("chai");
 const path = require("path");
-const snarkjs = require("snarkjs");
-const compiler = require("circom");
+const tester = require("circom").tester;
 const babyjub = require("../src/babyjub");
+const Fr = require("ffjavascript").bn128.Fr;
 
 const assert = chai.assert;
 
-const bigInt = snarkjs.bigInt;
-
-
 function print(circuit, w, s) {
     console.log(s + ": " + w[circuit.getSignalIdx(s)]);
 }
@@ -19,93 +16,74 @@ describe("Escalarmul test", function () {
     this.timeout(100000);
 
     before( async() => {
-        const cirDef = await compiler(path.join(__dirname, "circuits", "escalarmulfix_test.circom"));
-        circuit = new snarkjs.Circuit(cirDef);
-        console.log("NConstrains Escalarmul fix: " + circuit.nConstraints);
+        circuit = await tester(path.join(__dirname, "circuits", "escalarmulfix_test.circom"));
     });
 
     it("Should generate Same escalar mul", async () => {
 
-        const w = circuit.calculateWitness({"e": 0});
+        const w = await circuit.calculateWitness({"e": 0});
 
-        assert(circuit.checkWitness(w));
+        await circuit.checkConstraints(w);
 
-        const xout = w[circuit.getSignalIdx("main.out[0]")];
-        const yout = w[circuit.getSignalIdx("main.out[1]")];
+        await circuit.assertOut(w, {out: [0,1]}, true);
 
-        assert(xout.equals(0));
-        assert(yout.equals(1));
     });
 
     it("Should generate Same escalar mul", async () => {
 
-        const w = circuit.calculateWitness({"e": 1});
+        const w = await circuit.calculateWitness({"e": 1}, true);
 
-        assert(circuit.checkWitness(w));
+        await circuit.checkConstraints(w);
 
-        const xout = w[circuit.getSignalIdx("main.out[0]")];
-        const yout = w[circuit.getSignalIdx("main.out[1]")];
+        await circuit.assertOut(w, {out: babyjub.Base8});
 
-        assert(xout.equals(babyjub.Base8[0]));
-        assert(yout.equals(babyjub.Base8[1]));
     });
 
     it("Should generate scalar mul of a specific constant", async () => {
 
-        const s = bigInt("2351960337287830298912035165133676222414898052661454064215017316447594616519");
+        const s = Fr.e("2351960337287830298912035165133676222414898052661454064215017316447594616519");
         const base8 = [
-            bigInt("5299619240641551281634865583518297030282874472190772894086521144482721001553"),
-            bigInt("16950150798460657717958625567821834550301663161624707787222815936182638968203")
+            Fr.e("5299619240641551281634865583518297030282874472190772894086521144482721001553"),
+            Fr.e("16950150798460657717958625567821834550301663161624707787222815936182638968203")
         ];
 
-        const w = circuit.calculateWitness({"e": s});
+        const w = await circuit.calculateWitness({"e": s}, true);
 
-        assert(circuit.checkWitness(w));
-
-        const xout = w[circuit.getSignalIdx("main.out[0]")];
-        const yout = w[circuit.getSignalIdx("main.out[1]")];
+        await circuit.checkConstraints(w);
 
         const expectedRes = babyjub.mulPointEscalar(base8, s);
 
-        assert(xout.equals(expectedRes[0]));
-        assert(yout.equals(expectedRes[1]));
+        await circuit.assertOut(w, {out: expectedRes});
+
     });
 
     it("Should generate scalar mul of the firsts 50 elements", async () => {
 
         const base8 = [
-            bigInt("5299619240641551281634865583518297030282874472190772894086521144482721001553"),
-            bigInt("16950150798460657717958625567821834550301663161624707787222815936182638968203")
+            Fr.e("5299619240641551281634865583518297030282874472190772894086521144482721001553"),
+            Fr.e("16950150798460657717958625567821834550301663161624707787222815936182638968203")
         ];
 
         for (let i=0; i<50; i++) {
-            const s = bigInt(i);
+            const s = Fr.e(i);
 
-            const w = circuit.calculateWitness({"e": s});
+            const w = await circuit.calculateWitness({"e": s}, true);
 
-            assert(circuit.checkWitness(w));
-
-            const xout = w[circuit.getSignalIdx("main.out[0]")];
-            const yout = w[circuit.getSignalIdx("main.out[1]")];
+            await circuit.checkConstraints(w);
 
             const expectedRes = babyjub.mulPointEscalar(base8, s);
 
-            assert(xout.equals(expectedRes[0]));
-            assert(yout.equals(expectedRes[1]));
+            await circuit.assertOut(w, {out: expectedRes});
         }
     });
 
     it("If multiply by order should return 0", async () => {
 
-        const w = circuit.calculateWitness({"e": babyjub.subOrder });
+        const w = await circuit.calculateWitness({"e": babyjub.subOrder }, true);
 
-        assert(circuit.checkWitness(w));
+        await circuit.checkConstraints(w);
 
-        const xout = w[circuit.getSignalIdx("main.out[0]")];
-        const yout = w[circuit.getSignalIdx("main.out[1]")];
-
-        assert(xout.equals(bigInt.zero));
-        assert(yout.equals(bigInt.one));
+        await circuit.assertOut(w, {out: [0,1]});
     });
 
 });

test/mimccircuit.js

@@ -1,35 +1,25 @@
 const chai = require("chai");
 const path = require("path");
-const snarkjs = require("snarkjs");
-const compiler = require("circom");
+const tester = require("circom").tester;
 
 const mimcjs = require("../src/mimc7.js");
 
-const assert = chai.assert;
-
 describe("MiMC Circuit test", function () {
     let circuit;
 
     this.timeout(100000);
 
     before( async () => {
-        const cirDef = await compiler(path.join(__dirname, "circuits", "mimc_test.circom"));
-
-        circuit = new snarkjs.Circuit(cirDef);
-
-        console.log("MiMC constraints: " + circuit.nConstraints);
+        circuit = await tester(path.join(__dirname, "circuits", "mimc_test.circom"));
     });
 
     it("Should check constrain", async () => {
-        const w = circuit.calculateWitness({x_in: 1, k: 2});
-
-        const res = w[circuit.getSignalIdx("main.out")];
+        const w = await circuit.calculateWitness({x_in: 1, k: 2}, true);
 
         const res2 = mimcjs.hash(1,2,91);
 
-        assert.equal(res.toString(), res2.toString());
-
-        assert(circuit.checkWitness(w));
+        await circuit.assertOut(w, {out: res2});
 
+        await circuit.checkConstraints(w);
     });
 });

test/mimcspongecircuit.js

@@ -1,11 +1,8 @@
-const chai = require("chai");
 const path = require("path");
-const snarkjs = require("snarkjs");
-const compiler = require("circom");
+const tester = require("circom").tester;
 
 const mimcjs = require("../src/mimcsponge.js");
 
-const assert = chai.assert;
 
 describe("MiMC Sponge Circuit test", function () {
     let circuit;
@@ -13,46 +10,28 @@ describe("MiMC Sponge Circuit test", function () {
     this.timeout(100000);
 
     it("Should check permutation", async () => {
-        const cirDef = await compiler(path.join(__dirname, "circuits", "mimc_sponge_test.circom"));
 
-        circuit = new snarkjs.Circuit(cirDef);
+        circuit = await tester(path.join(__dirname, "circuits", "mimc_sponge_test.circom"));
 
-        console.log("MiMC Feistel constraints: " + circuit.nConstraints);
-
-        const w = circuit.calculateWitness({xL_in: 1, xR_in: 2, k: 3});
-
-        const xLout = w[circuit.getSignalIdx("main.xL_out")];
-        const xRout = w[circuit.getSignalIdx("main.xR_out")];
+        const w = await circuit.calculateWitness({xL_in: 1, xR_in: 2, k: 3});
 
         const out2 = mimcjs.hash(1,2,3);
 
-        assert.equal(xLout.toString(), out2.xL.toString());
-        assert.equal(xRout.toString(), out2.xR.toString());
+        await circuit.assertOut(w, {xL_out: out2.xL, xR_out: out2.xR});
 
-        assert(circuit.checkWitness(w));
+        await circuit.checkConstraints(w);
 
     });
 
     it("Should check hash", async () => {
-        const cirDef = await compiler(path.join(__dirname, "circuits", "mimc_sponge_hash_test.circom"));
+        circuit = await tester(path.join(__dirname, "circuits", "mimc_sponge_hash_test.circom"));
 
-        circuit = new snarkjs.Circuit(cirDef);
-
-        console.log("MiMC Sponge constraints: " + circuit.nConstraints);
-
-        const w = circuit.calculateWitness({ins: [1, 2], k: 0});
-
-        const o1 = w[circuit.getSignalIdx("main.outs[0]")];
-        const o2 = w[circuit.getSignalIdx("main.outs[1]")];
-        const o3 = w[circuit.getSignalIdx("main.outs[2]")];
+        const w = await circuit.calculateWitness({ins: [1, 2], k: 0});
 
         const out2 = mimcjs.multiHash([1,2], 0, 3);
 
-        assert.equal(o1.toString(), out2[0].toString());
-        assert.equal(o2.toString(), out2[1].toString());
-        assert.equal(o3.toString(), out2[2].toString());
-
-        assert(circuit.checkWitness(w));
+        await circuit.assertOut(w, {outs: out2});
 
+        await circuit.checkConstraints(w);
     });
 });

test/montgomery.js

@@ -1,13 +1,11 @@
 const chai = require("chai");
 const path = require("path");
-const snarkjs = require("snarkjs");
-const compiler = require("circom");
+const tester = require("circom").tester;
 const babyJub = require("../src/babyjub.js");
+const Fr = require("ffjavascript").bn128.Fr;
 
 const assert = chai.assert;
 
-const bigInt = snarkjs.bigInt;
-
 describe("Montgomery test", function () {
     let circuitE2M;
     let circuitM2E;
@@ -15,85 +13,80 @@ describe("Montgomery test", function () {
     let circuitMDouble;
 
     let g = [
-        snarkjs.bigInt("5299619240641551281634865583518297030282874472190772894086521144482721001553"),
-        snarkjs.bigInt("16950150798460657717958625567821834550301663161624707787222815936182638968203")];
+        Fr.e("5299619240641551281634865583518297030282874472190772894086521144482721001553"),
+        Fr.e("16950150798460657717958625567821834550301663161624707787222815936182638968203")
+    ];
 
     let mg, mg2, g2, g3, mg3;
 
     this.timeout(100000);
     before( async() => {
-        const cirDefE2M = await compiler(path.join(__dirname, "circuits", "edwards2montgomery.circom"));
-        circuitE2M = new snarkjs.Circuit(cirDefE2M);
-        console.log("NConstrains Edwards -> Montgomery: " + circuitE2M.nConstraints);
-
-        const cirDefM2E = await compiler(path.join(__dirname, "circuits", "montgomery2edwards.circom"));
-        circuitM2E = new snarkjs.Circuit(cirDefM2E);
-        console.log("NConstrains Montgomery -> Edwards: " + circuitM2E.nConstraints);
-
-        const cirDefMAdd = await compiler(path.join(__dirname, "circuits", "montgomeryadd.circom"));
-        circuitMAdd = new snarkjs.Circuit(cirDefMAdd);
-        console.log("NConstrains Montgomery Add: " + circuitMAdd.nConstraints);
-
-        const cirDefMDouble = await compiler(path.join(__dirname, "circuits", "montgomerydouble.circom"));
-        circuitMDouble = new snarkjs.Circuit(cirDefMDouble);
-        console.log("NConstrains Montgomery Double: " + circuitMDouble.nConstraints);
+        circuitE2M = await tester(path.join(__dirname, "circuits", "edwards2montgomery.circom"));
+        await circuitE2M.loadSymbols();
+        circuitM2E = await tester(path.join(__dirname, "circuits", "montgomery2edwards.circom"));
+        await circuitM2E.loadSymbols();
+        circuitMAdd = await tester(path.join(__dirname, "circuits", "montgomeryadd.circom"));
+        await circuitMAdd.loadSymbols();
+        circuitMDouble = await tester(path.join(__dirname, "circuits", "montgomerydouble.circom"));
+        await circuitMDouble.loadSymbols();
     });
     it("Convert Edwards to Montgomery and back again", async () => {
         let w, xout, yout;
 
-        w = circuitE2M.calculateWitness({ in: g});
+        w = await circuitE2M.calculateWitness({ in: g}, true);
 
-        xout = w[circuitE2M.getSignalIdx("main.out[0]")];
-        yout = w[circuitE2M.getSignalIdx("main.out[1]")];
+        xout = w[circuitE2M.symbols["main.out[0]"].varIdx];
+        yout = w[circuitE2M.symbols["main.out[1]"].varIdx];
 
         mg = [xout, yout];
 
-        w = circuitM2E.calculateWitness({ in: [xout, yout]});
+        w = await circuitM2E.calculateWitness({ in: [xout, yout]}, true);
 
-        xout = w[circuitM2E.getSignalIdx("main.out[0]")];
-        yout = w[circuitM2E.getSignalIdx("main.out[1]")];
+        xout = w[circuitM2E.symbols["main.out[0]"].varIdx];
+        yout = w[circuitM2E.symbols["main.out[1]"].varIdx];
 
-        assert(xout.equals(g[0]));
-        assert(yout.equals(g[1]));
+        assert(Fr.eq(xout, g[0]));
+        assert(Fr.eq(yout, g[1]));
     });
     it("Should double a point", async () => {
         let w, xout, yout;
 
         g2 = babyJub.addPoint(g,g);
 
-        w = circuitMDouble.calculateWitness({ in: mg});
+        w = await circuitMDouble.calculateWitness({ in: mg}, true);
 
-        xout = w[circuitE2M.getSignalIdx("main.out[0]")];
-        yout = w[circuitE2M.getSignalIdx("main.out[1]")];
+        xout = w[circuitE2M.symbols["main.out[0]"].varIdx];
+        yout = w[circuitE2M.symbols["main.out[1]"].varIdx];
 
         mg2 = [xout, yout];
 
-        w = circuitM2E.calculateWitness({ in: mg2});
+        w = await circuitM2E.calculateWitness({ in: mg2}, true);
 
-        xout = w[circuitM2E.getSignalIdx("main.out[0]")];
-        yout = w[circuitM2E.getSignalIdx("main.out[1]")];
+        xout = w[circuitM2E.symbols["main.out[0]"].varIdx];
+        yout = w[circuitM2E.symbols["main.out[1]"].varIdx];
 
-        assert(xout.equals(g2[0]));
-        assert(yout.equals(g2[1]));
+
+        assert(Fr.eq(xout, g2[0]));
+        assert(Fr.eq(yout, g2[1]));
     });
     it("Should add a point", async () => {
         let w, xout, yout;
 
         g3 = babyJub.addPoint(g,g2);
 
-        w = circuitMAdd.calculateWitness({ in1: mg, in2: mg2});
+        w = await circuitMAdd.calculateWitness({ in1: mg, in2: mg2}, true);
 
-        xout = w[circuitMAdd.getSignalIdx("main.out[0]")];
-        yout = w[circuitMAdd.getSignalIdx("main.out[1]")];
+        xout = w[circuitMAdd.symbols["main.out[0]"].varIdx];
+        yout = w[circuitMAdd.symbols["main.out[1]"].varIdx];
 
         mg3 = [xout, yout];
 
-        w = circuitM2E.calculateWitness({ in: mg3});
+        w = await circuitM2E.calculateWitness({ in: mg3}, true);
 
-        xout = w[circuitM2E.getSignalIdx("main.out[0]")];
-        yout = w[circuitM2E.getSignalIdx("main.out[1]")];
+        xout = w[circuitM2E.symbols["main.out[0]"].varIdx];
+        yout = w[circuitM2E.symbols["main.out[1]"].varIdx];
 
-        assert(xout.equals(g3[0]));
-        assert(yout.equals(g3[1]));
+        assert(Fr.eq(xout, g3[0]));
+        assert(Fr.eq(yout, g3[1]));
     });
 });

test/multiplexer.js

@@ -1,127 +1,98 @@
-const chai = require("chai");
 const path = require("path");
-const snarkjs = require("snarkjs");
-const compiler = require("circom");
+const tester = require("circom").tester;
+const Fr = require("ffjavascript").bn128.Fr;
 
-const assert = chai.assert;
-
-const bigInt = snarkjs.bigInt;
-
-
-describe("Mux4 test", () => {
+describe("Mux4 test", function() {
+    this.timeout(100000);
     it("Should create a constant multiplexer 4", async () => {
 
-        const cirDef = await compiler(path.join(__dirname, "circuits", "mux4_1.circom"));
-
-//        console.log(JSON.stringify(cirDef, null, 1));
-
-//        assert.equal(cirDef.nVars, 2);
-
-        const circuit = new snarkjs.Circuit(cirDef);
-
-        console.log("NConstrains Mux4: " + circuit.nConstraints);
+        const circuit = await tester(path.join(__dirname, "circuits", "mux4_1.circom"));
 
         const ct16 = [
-            bigInt("123"),
-            bigInt("456"),
-            bigInt("789"),
-            bigInt("012"),
-            bigInt("111"),
-            bigInt("222"),
-            bigInt("333"),
-            bigInt("4546"),
-            bigInt("134523"),
-            bigInt("44356"),
-            bigInt("15623"),
-            bigInt("4566"),
-            bigInt("1223"),
-            bigInt("4546"),
-            bigInt("4256"),
-            bigInt("4456")
+            Fr.e("123"),
+            Fr.e("456"),
+            Fr.e("789"),
+            Fr.e("012"),
+            Fr.e("111"),
+            Fr.e("222"),
+            Fr.e("333"),
+            Fr.e("4546"),
+            Fr.e("134523"),
+            Fr.e("44356"),
+            Fr.e("15623"),
+            Fr.e("4566"),
+            Fr.e("1223"),
+            Fr.e("4546"),
+            Fr.e("4256"),
+            Fr.e("4456")
         ];
 
         for (let i=0; i<16; i++) {
-            const w = circuit.calculateWitness({ "selector": i });
+            const w = await circuit.calculateWitness({ "selector": i }, true);
 
-            assert(w[0].equals(bigInt(1)));
+            await circuit.checkConstraints(w);
 
-            // console.log(i + " -> " + w[circuit.getSignalIdx("main.out")].toString());
-            assert(w[circuit.getSignalIdx("main.out")].equals(ct16[i]));
+            await circuit.assertOut(w, {out: ct16[i]});
         }
     });
 
     it("Should create a constant multiplexer 3", async () => {
 
-        const cirDef = await compiler(path.join(__dirname, "circuits", "mux3_1.circom"));
-
-        const circuit = new snarkjs.Circuit(cirDef);
-
-        console.log("NConstrains Mux3: " + circuit.nConstraints);
+        const circuit = await tester(path.join(__dirname, "circuits", "mux3_1.circom"));
 
         const ct8 = [
-            bigInt("37"),
-            bigInt("47"),
-            bigInt("53"),
-            bigInt("71"),
-            bigInt("89"),
-            bigInt("107"),
-            bigInt("163"),
-            bigInt("191")
+            Fr.e("37"),
+            Fr.e("47"),
+            Fr.e("53"),
+            Fr.e("71"),
+            Fr.e("89"),
+            Fr.e("107"),
+            Fr.e("163"),
+            Fr.e("191")
         ];
 
         for (let i=0; i<8; i++) {
-            const w = circuit.calculateWitness({ "selector": i });
+            const w = await circuit.calculateWitness({ "selector": i }, true);
 
-            assert(w[0].equals(bigInt(1)));
+            await circuit.checkConstraints(w);
 
-            // console.log(i + " -> " + w[circuit.getSignalIdx("main.out")].toString());
-            assert(w[circuit.getSignalIdx("main.out")].equals(ct8[i]));
+            await circuit.assertOut(w, {out: ct8[i]});
         }
     });
     it("Should create a constant multiplexer 2", async () => {
 
-        const cirDef = await compiler(path.join(__dirname, "circuits", "mux2_1.circom"));
+        const circuit = await tester(path.join(__dirname, "circuits", "mux2_1.circom"));
 
-        const circuit = new snarkjs.Circuit(cirDef);
-
-        console.log("NConstrains Mux2: " + circuit.nConstraints);
-
-        const ct8 = [
-            bigInt("37"),
-            bigInt("47"),
-            bigInt("53"),
-            bigInt("71"),
+        const ct4 = [
+            Fr.e("37"),
+            Fr.e("47"),
+            Fr.e("53"),
+            Fr.e("71"),
         ];
 
         for (let i=0; i<4; i++) {
-            const w = circuit.calculateWitness({ "selector": i });
+            const w = await circuit.calculateWitness({ "selector": i }, true);
 
-            assert(w[0].equals(bigInt(1)));
+            await circuit.checkConstraints(w);
 
-            // console.log(i + " -> " + w[circuit.getSignalIdx("main.out")].toString());
-            assert(w[circuit.getSignalIdx("main.out")].equals(ct8[i]));
+            await circuit.assertOut(w, {out: ct4[i]});
         }
     });
     it("Should create a constant multiplexer 1", async () => {
 
-        const cirDef = await compiler(path.join(__dirname, "circuits", "mux1_1.circom"));
+        const circuit = await tester(path.join(__dirname, "circuits", "mux1_1.circom"));
 
-        const circuit = new snarkjs.Circuit(cirDef);
-
-        console.log("NConstrains Mux1: " + circuit.nConstraints);
-
-        const ct8 = [
-            bigInt("37"),
-            bigInt("47"),
+        const ct2 = [
+            Fr.e("37"),
+            Fr.e("47"),
         ];
 
         for (let i=0; i<2; i++) {
-            const w = circuit.calculateWitness({ "selector": i });
+            const w = await circuit.calculateWitness({ "selector": i }, true);
 
-            assert(w[0].equals(bigInt(1)));
+            await circuit.checkConstraints(w);
 
-            // console.log(i + " -> " + w[circuit.getSignalIdx("main.out")].toString());
-            assert(w[circuit.getSignalIdx("main.out")].equals(ct8[i]));
+            await circuit.assertOut(w, {out: ct2[i]});
         }
     });
 });

test/pedersen.js

@@ -1,100 +1,77 @@
 const chai = require("chai");
 const path = require("path");
-const snarkjs = require("snarkjs");
-const compiler = require("circom");
 
-const assert = chai.assert;
-
-const bigInt = snarkjs.bigInt;
+const Fr = require("ffjavascript").bn128.Fr;
+const tester = require("circom").tester;
 
 const babyJub = require("../src/babyjub.js");
 
 const PBASE =
     [
-        [bigInt("10457101036533406547632367118273992217979173478358440826365724437999023779287"),bigInt("19824078218392094440610104313265183977899662750282163392862422243483260492317")],
-        [bigInt("2671756056509184035029146175565761955751135805354291559563293617232983272177"),bigInt("2663205510731142763556352975002641716101654201788071096152948830924149045094")],
-        [bigInt("5802099305472655231388284418920769829666717045250560929368476121199858275951"),bigInt("5980429700218124965372158798884772646841287887664001482443826541541529227896")],
-        [bigInt("7107336197374528537877327281242680114152313102022415488494307685842428166594"),bigInt("2857869773864086953506483169737724679646433914307247183624878062391496185654")],
-        [bigInt("20265828622013100949498132415626198973119240347465898028410217039057588424236"),bigInt("1160461593266035632937973507065134938065359936056410650153315956301179689506")]
+        [Fr.e("10457101036533406547632367118273992217979173478358440826365724437999023779287"),Fr.e("19824078218392094440610104313265183977899662750282163392862422243483260492317")],
+        [Fr.e("2671756056509184035029146175565761955751135805354291559563293617232983272177"),Fr.e("2663205510731142763556352975002641716101654201788071096152948830924149045094")],
+        [Fr.e("5802099305472655231388284418920769829666717045250560929368476121199858275951"),Fr.e("5980429700218124965372158798884772646841287887664001482443826541541529227896")],
+        [Fr.e("7107336197374528537877327281242680114152313102022415488494307685842428166594"),Fr.e("2857869773864086953506483169737724679646433914307247183624878062391496185654")],
+        [Fr.e("20265828622013100949498132415626198973119240347465898028410217039057588424236"),Fr.e("1160461593266035632937973507065134938065359936056410650153315956301179689506")]
     ];
 
 describe("Double Pedersen test", function() {
     let circuit;
     this.timeout(100000);
     before( async() => {
-        const cirDef = await compiler(path.join(__dirname, "circuits", "pedersen_test.circom"));
 
-        circuit = new snarkjs.Circuit(cirDef);
+        circuit = await tester(path.join(__dirname, "circuits", "pedersen_test.circom"));
 
-        console.log("NConstrains: " + circuit.nConstraints);
     });
     it("Should pedersen at zero", async () => {
 
-        let w, xout, yout;
+        let w;
 
-        w = circuit.calculateWitness({ in: ["0", "0"]});
+        w = await circuit.calculateWitness({ in: ["0", "0"]}, true);
 
-        xout = w[circuit.getSignalIdx("main.out[0]")];
-        yout = w[circuit.getSignalIdx("main.out[1]")];
+        await circuit.assertOut(w, {out: [0,1]});
 
-        assert(xout.equals("0"));
-        assert(yout.equals("1"));
     });
     it("Should pedersen at one first generator", async () => {
-        let w, xout, yout;
+        let w;
 
-        w = circuit.calculateWitness({ in: ["1", "0"]});
+        w = await circuit.calculateWitness({ in: ["1", "0"]}, true);
 
-        xout = bigInt(w[circuit.getSignalIdx("main.out[0]")]);
-        yout = bigInt(w[circuit.getSignalIdx("main.out[1]")]);
+        await circuit.assertOut(w, {out: PBASE[0]});
 
-        assert(xout.equals(PBASE[0][0]));
-        assert(yout.equals(PBASE[0][1]));
     });
     it("Should pedersen at one second generator", async () => {
-        let w, xout, yout;
+        let w;
 
-        w = circuit.calculateWitness({ in: ["0", "1"]});
+        w = await circuit.calculateWitness({ in: ["0", "1"]}, true);
 
-        xout = w[circuit.getSignalIdx("main.out[0]")];
-        yout = w[circuit.getSignalIdx("main.out[1]")];
-
-        assert(xout.equals(PBASE[1][0]));
-        assert(yout.equals(PBASE[1][1]));
+        await circuit.assertOut(w, {out: PBASE[1]});
 
     });
     it("Should pedersen at mixed generators", async () => {
-        let w, xout, yout;
-        w = circuit.calculateWitness({ in: ["3", "7"]});
-
-        xout = w[circuit.getSignalIdx("main.out[0]")];
-        yout = w[circuit.getSignalIdx("main.out[1]")];
-
+        let w;
+        w = await circuit.calculateWitness({ in: ["3", "7"]}, true);
 
         const r = babyJub.addPoint(
             babyJub.mulPointEscalar(PBASE[0], 3),
             babyJub.mulPointEscalar(PBASE[1], 7)
         );
 
-        assert(xout.equals(r[0]));
-        assert(yout.equals(r[1]));
+        await circuit.assertOut(w, {out: r});
 
     });
     it("Should pedersen all ones", async () => {
-        let w, xout, yout;
+        let w;
 
-        const allOnes = bigInt("1").shl(250).sub(bigInt("1"));
-        w = circuit.calculateWitness({ in: [allOnes, allOnes]});
+        const allOnes = Fr.sub(Fr.shl(Fr.e("1"), Fr.e(250)), Fr.e("1"));
+        w = await circuit.calculateWitness({ in: [allOnes, allOnes]}, true);
 
-        xout = w[circuit.getSignalIdx("main.out[0]")];
-        yout = w[circuit.getSignalIdx("main.out[1]")];
 
         const r2 = babyJub.addPoint(
             babyJub.mulPointEscalar(PBASE[0], allOnes),
             babyJub.mulPointEscalar(PBASE[1], allOnes)
         );
 
-        assert(xout.equals(r2[0]));
-        assert(yout.equals(r2[1]));
+        await circuit.assertOut(w, {out: r2});
     });
 });

test/pedersen2.js

@@ -1,11 +1,7 @@
-const chai = require("chai");
 const path = require("path");
-const snarkjs = require("snarkjs");
-const compiler = require("circom");
 
-const assert = chai.assert;
-
-const bigInt = snarkjs.bigInt;
+const Fr = require("ffjavascript").bn128.Fr;
+const tester = require("circom").tester;
 
 const babyJub = require("../src/babyjub.js");
 const pedersen = require("../src/pedersenHash.js");
@@ -15,60 +11,39 @@ describe("Pedersen test", function() {
     let circuit;
     this.timeout(100000);
     before( async() => {
-        const cirDef = await compiler(path.join(__dirname, "circuits", "pedersen2_test.circom"));
 
-        circuit = new snarkjs.Circuit(cirDef);
-
-        console.log("NConstrains Pedersen2: " + circuit.nConstraints);
+        circuit = await tester(path.join(__dirname, "circuits", "pedersen2_test.circom"));
     });
     it("Should pedersen at zero", async () => {
 
-        let w, xout, yout;
+        let w;
 
-        w = circuit.calculateWitness({ in: 0});
-
-        xout = w[circuit.getSignalIdx("main.out[0]")];
-        yout = w[circuit.getSignalIdx("main.out[1]")];
+        w = await circuit.calculateWitness({ in: 0}, true);
 
         const b = Buffer.alloc(32);
 
         const h = pedersen.hash(b);
         const hP = babyJub.unpackPoint(h);
 
-        /*
-        console.log(`[${xout.toString()}, ${yout.toString()}]`);
-        console.log(`[${hP[0].toString()}, ${hP[1].toString()}]`);
-        */
+        await circuit.assertOut(w, {out: hP});
 
-        assert(xout.equals(hP[0]));
-        assert(yout.equals(hP[1]));
     });
     it("Should pedersen with 253 ones", async () => {
 
-        let w, xout, yout;
+        let w;
 
-        const n = bigInt.one.shl(253).sub(bigInt.one);
-        console.log(n.toString(16));
+        const n = Fr.sub(Fr.shl(Fr.one, Fr.e(253)), Fr.one);
 
-        w = circuit.calculateWitness({ in: n});
-
-        xout = w[circuit.getSignalIdx("main.out[0]")];
-        yout = w[circuit.getSignalIdx("main.out[1]")];
+        w = await circuit.calculateWitness({ in: n}, true);
 
         const b = Buffer.alloc(32);
         for (let i=0; i<31; i++) b[i] = 0xFF;
         b[31] = 0x1F;
 
-
         const h = pedersen.hash(b);
         const hP = babyJub.unpackPoint(h);
 
-        /*
-        console.log(`[${xout.toString()}, ${yout.toString()}]`);
-        console.log(`[${hP[0].toString()}, ${hP[1].toString()}]`);
-        */
+        await circuit.assertOut(w, {out: hP});
 
-        assert(xout.equals(hP[0]));
-        assert(yout.equals(hP[1]));
     });
 });

test/point2bits.js

@@ -1,11 +1,5 @@
-const chai = require("chai");
 const path = require("path");
-const snarkjs = require("snarkjs");
-const compiler = require("circom");
-
-const assert = chai.assert;
-
-const bigInt = snarkjs.bigInt;
+const tester = require("circom").tester;
 
 const babyJub = require("../src/babyjub.js");
 
@@ -14,20 +8,16 @@ describe("Point 2 bits test", function() {
     let circuit;
     this.timeout(100000);
     before( async() => {
-        const cirDef = await compiler(path.join(__dirname, "circuits", "pointbits_loopback.circom"));
-
-        circuit = new snarkjs.Circuit(cirDef);
-
-        console.log("NConstrains Point2Bits loopback: " + circuit.nConstraints);
+        circuit = await tester(path.join(__dirname, "circuits", "pointbits_loopback.circom"));
     });
     it("Should do the both convertions for 8Base", async () => {
-        const w = circuit.calculateWitness({ in: babyJub.Base8});
+        const w = await circuit.calculateWitness({ in: babyJub.Base8}, true);
 
-        assert(circuit.checkWitness(w));
+        await circuit.checkConstraints(w);
     });
     it("Should do the both convertions for Zero point", async () => {
-        const w = circuit.calculateWitness({ in: [0, 1]});
+        const w = await circuit.calculateWitness({ in: [0, 1]}, true);
 
-        assert(circuit.checkWitness(w));
+        await circuit.checkConstraints(w);
     });
 });

test/poseidoncircuit.js

@@ -1,60 +1,57 @@
 const chai = require("chai");
 const path = require("path");
-const snarkjs = require("snarkjs");
-const compiler = require("circom");
-var blake2b = require('blake2b');
+const tester = require("circom").tester;
 
 const poseidon = require("../src/poseidon.js");
 
 const assert = chai.assert;
 
-describe("Blake2b version test", function() {
-    it("Should give the expected output for blake2b version", async () => {
-        var output = new Uint8Array(32);
-        var input = Buffer.from('poseidon_constants');
-        h = blake2b(output.length).update(input).digest('hex')
-        assert.equal('e57ba154fb2c47811dc1a2369b27e25a44915b4e4ece4eb8ec74850cb78e01b1', h);
-    });
-});
-
 describe("Poseidon Circuit test", function () {
-    let circuit;
+    let circuit6;
+    let circuit3;
 
     this.timeout(100000);
 
     before( async () => {
-        const cirDef = await compiler(path.join(__dirname, "circuits", "poseidon_test.circom"));
-
-        circuit = new snarkjs.Circuit(cirDef);
-
-        console.log("Poseidon constraints: " + circuit.nConstraints);
+        circuit6 = await tester(path.join(__dirname, "circuits", "poseidon6_test.circom"));
+        circuit3 = await tester(path.join(__dirname, "circuits", "poseidon3_test.circom"));
     });
 
-    it("Should check constrain of hash([1, 2])", async () => {
-        const w = circuit.calculateWitness({inputs: [1, 2]});
+    it("Should check constrain of hash([1, 2]) t=6", async () => {
+        const w = await circuit6.calculateWitness({inputs: [1, 2, 0,0,0]}, true);
 
-        const res = w[circuit.getSignalIdx("main.out")];
-
-        const hash = poseidon.createHash(6, 8, 57);
-
-        const res2 = hash([1,2]);
-        assert.equal('12242166908188651009877250812424843524687801523336557272219921456462821518061', res2.toString());
-        assert.equal(res.toString(), res2.toString());
-        assert(circuit.checkWitness(w));
+        const res2 = poseidon([1,2,0,0,0]);
+        assert.equal("3975478831357328722254985704342968745327876719981393787143845259590563829094", res2.toString());
+        await circuit6.assertOut(w, {out : res2});
+        await circuit6.checkConstraints(w);
     });
 
-    it("Should check constrain of hash([3, 4])", async () => {
-        const w = circuit.calculateWitness({inputs: [3, 4]});
+    it("Should check constrain of hash([3, 4]) t=6", async () => {
+        const w = await circuit6.calculateWitness({inputs: [3, 4,5,10,23]});
 
-        const res = w[circuit.getSignalIdx("main.out")];
+        const res2 = poseidon([3, 4,5,10,23]);
 
-        const hash = poseidon.createHash(6, 8, 57);
+        assert.equal("18540626624821144952552691894137986276337186174352554475896834101336254024067", res2.toString());
+        await circuit6.assertOut(w, {out : res2});
+        await circuit6.checkConstraints(w);
+    });
 
-        const res2 = hash([3, 4]);
-        assert.equal('17185195740979599334254027721507328033796809509313949281114643312710535000993', res2.toString());
 
-        assert.equal(res.toString(), res2.toString());
+    it("Should check constrain of hash([1, 2]) t=3", async () => {
+        const w = await circuit3.calculateWitness({inputs: [1, 2]});
 
-        assert(circuit.checkWitness(w));
+        const res2 = poseidon([1,2]);
+        assert.equal("17117985411748610629288516079940078114952304104811071254131751175361957805920", res2.toString());
+        await circuit3.assertOut(w, {out : res2});
+        await circuit3.checkConstraints(w);
+    });
+
+    it("Should check constrain of hash([3, 4]) t=3", async () => {
+        const w = await circuit3.calculateWitness({inputs: [3, 4]});
+
+        const res2 = poseidon([3, 4]);
+        assert.equal("21867347236198497199818917118739170715216974132230970409806500217655788551452", res2.toString());
+        await circuit3.assertOut(w, {out : res2});
+        await circuit3.checkConstraints(w);
     });
 });

test/poseidoncontract.js

@@ -2,19 +2,18 @@ const ganache = require("ganache-cli");
 const Web3 = require("web3");
 const chai = require("chai");
 const poseidonGenContract = require("../src/poseidon_gencontract.js");
-const Poseidon = require("../src/poseidon.js");
-const bigInt = require("snarkjs").bigInt;
+const poseidon = require("../src/poseidon.js");
 
 const assert = chai.assert;
 const log = (msg) => { if (process.env.MOCHA_VERBOSE) console.log(msg); };
 
-const SEED = "mimc";
-
-describe("Poseidon Smart contract test", () => {
+describe("Poseidon Smart contract test", function () {
     let testrpc;
     let web3;
-    let mimc;
+    let poseidon6;
+    let poseidon3;
     let accounts;
+    this.timeout(100000);
 
     before(async () => {
         web3 = new Web3(ganache.provider(), null, { transactionConfirmationBlocks: 1 });
@@ -22,28 +21,45 @@ describe("Poseidon Smart contract test", () => {
     });
 
     it("Should deploy the contract", async () => {
-        const C = new web3.eth.Contract(poseidonGenContract.abi);
+        const C6 = new web3.eth.Contract(poseidonGenContract.generateABI(5));
+        const C3 = new web3.eth.Contract(poseidonGenContract.generateABI(2));
 
-        mimc = await C.deploy({
-            data: poseidonGenContract.createCode()
+        poseidon6 = await C6.deploy({
+            data: poseidonGenContract.createCode(5)
         }).send({
-            gas: 2500000,
+            gas: 5000000,
+            from: accounts[0]
+        });
+        poseidon3 = await C3.deploy({
+            data: poseidonGenContract.createCode(2)
+        }).send({
+            gas: 5000000,
             from: accounts[0]
         });
     });
 
-    it("Shold calculate the mimic correctly", async () => {
+    it("Should calculate the poseidon correctly t=6", async () => {
 
-        const res = await mimc.methods.poseidon([1,2]).call();
+        const res = await poseidon6.methods.poseidon([1,2, 0, 0, 0]).call();
 
         // console.log("Cir: " + bigInt(res.toString(16)).toString(16));
 
-        const hash = Poseidon.createHash(6, 8, 57);
-
-        const res2 = hash([1,2]);
+        const res2 = poseidon([1,2, 0, 0, 0]);
         // console.log("Ref: " + bigInt(res2).toString(16));
 
         assert.equal(res.toString(), res2.toString());
     });
+    it("Should calculate the poseidon correctly t=3", async () => {
+
+        const res = await poseidon3.methods.poseidon([1,2]).call();
+
+        // console.log("Cir: " + bigInt(res.toString(16)).toString(16));
+
+        const res2 = poseidon([1,2]);
+        // console.log("Ref: " + bigInt(res2).toString(16));
+
+        assert.equal(res.toString(), res2.toString());
+    });
+
 });
 

test/sha256.js

@@ -1,14 +1,14 @@
 const chai = require("chai");
 const path = require("path");
-const snarkjs = require("snarkjs");
 const crypto = require("crypto");
-
-const compiler = require("circom");
+const Fr = require("ffjavascript").bn128.Fr;
 
 const assert = chai.assert;
 
 const sha256 = require("./helpers/sha256");
 
+const tester = require("circom").tester;
+
 // const printSignal = require("./helpers/printsignal");
 
 
@@ -34,7 +34,8 @@ function bitArray2buffer(a) {
 }
 
 
-describe("SHA256 test", () => {
+describe("SHA256 test", function () {
+    this.timeout(100000);
 
 
     it("Should work bits to array and array to bits", async () => {
@@ -45,17 +46,13 @@ describe("SHA256 test", () => {
         const a = buffer2bitArray(b);
         const b2 = bitArray2buffer(a);
 
-        assert.equal(b.toString("hex"), b2.toString("hex"));
+        assert.equal(b.toString("hex"), b2.toString("hex"), true);
     });
 
     it("Should calculate a hash of 1 compressor", async () => {
-        const cirDef = await compiler(path.join(__dirname, "circuits", "sha256_2_test.circom"));
-        const circuit = new snarkjs.Circuit(cirDef);
+        const cir = await tester(path.join(__dirname, "circuits", "sha256_2_test.circom"));
 
-        console.log("Vars: "+circuit.nVars);
-        console.log("Constraints: "+circuit.nConstraints);
-
-        const witness = circuit.calculateWitness({ "a": "1", "b": "2" });
+        const witness = await cir.calculateWitness({ "a": "1", "b": "2" }, true);
 
         const b = new Buffer.alloc(54);
         b[26] = 1;
@@ -70,21 +67,12 @@ describe("SHA256 test", () => {
 
         assert.equal(hash, hash2);
 
-        assert(witness[1].equals(snarkjs.bigInt(r)));
+        assert(Fr.eq(witness[1], Fr.e(r)));
     }).timeout(1000000);
 
     it("Should calculate a hash of 2 compressor", async () => {
-        const cirDef = await compiler(path.join(__dirname, "circuits", "sha256_test512.circom"),  {reduceConstraints:false}  );
-        const circuit = new snarkjs.Circuit(cirDef);
+        const cir = await tester(path.join(__dirname, "circuits", "sha256_test512.circom"));
 
-        console.log("Vars: "+circuit.nVars);
-        console.log("Constraints: "+circuit.nConstraints);
-
-/*
-        const testStr = "abcdbcdecdefdefgefghfghighijhijkijkljklmklmnlmnomnopnopq";
-
-        const b = Buffer.from(testStr, 'utf8');
-*/
         const b = new Buffer.alloc(64);
         for (let i=0; i<64; i++) {
             b[i] = i+1;
@@ -95,7 +83,7 @@ describe("SHA256 test", () => {
             .digest("hex");
 
         const arrIn = buffer2bitArray(b);
-        const witness = circuit.calculateWitness({ "in": arrIn } /*, {logOutput: true} */);
+        const witness = await cir.calculateWitness({ "in": arrIn }, true);
 
         const arrOut = witness.slice(1, 257);
         const hash2 = bitArray2buffer(arrOut).toString("hex");
@@ -103,34 +91,25 @@ describe("SHA256 test", () => {
         assert.equal(hash, hash2);
 
     }).timeout(1000000);
-
-
     it ("Should calculate a hash of 2 compressor", async () => {
-        const cirDef = await compiler(path.join(__dirname, "circuits", "sha256_test448.circom"),  {reduceConstraints:false}  );
-        const circuit = new snarkjs.Circuit(cirDef);
-
-        console.log("Vars: "+circuit.nVars);
-        console.log("Constraints: "+circuit.nConstraints);
-
+        const cir = await tester(path.join(__dirname, "circuits", "sha256_test448.circom"));
 
         const testStr = "abcdbcdecdefdefgefghfghighijhijkijkljklmklmnlmnomnopnopq";
 
-        const b = Buffer.from(testStr, 'utf8');
-        for (let i=0; i<64; i++) {
-            b[i] = i+1;
-        }
+        const b = Buffer.from(testStr, "utf8");
 
         const hash = crypto.createHash("sha256")
             .update(b)
             .digest("hex");
 
         const arrIn = buffer2bitArray(b);
-        const witness = circuit.calculateWitness({ "in": arrIn } /*, {logOutput: true} */);
+
+        const witness = await cir.calculateWitness({ "in": arrIn }, true);
 
         const arrOut = witness.slice(1, 257);
         const hash2 = bitArray2buffer(arrOut).toString("hex");
 
         assert.equal(hash, hash2);
-
-    }).timeout(1000000);
+    });
+
 });

test/sign.js

@@ -1,11 +1,7 @@
-const chai = require("chai");
 const path = require("path");
-const snarkjs = require("snarkjs");
-const compiler = require("circom");
-
-const assert = chai.assert;
-
-const bigInt = snarkjs.bigInt;
+const Fr = require("ffjavascript").bn128.Fr;
+const Scalar = require("ffjavascript").Scalar;
+const tester = require("circom").tester;
 
 function print(circuit, w, s) {
     console.log(s + ": " + w[circuit.getSignalIdx(s)]);
@@ -14,75 +10,71 @@ function print(circuit, w, s) {
 function getBits(v, n) {
     const res = [];
     for (let i=0; i<n; i++) {
-        if (v.shr(i).isOdd()) {
-            res.push(bigInt.one);
+        if (Scalar.isOdd(Scalar.shr(v, i))) {
+            res.push(Fr.one);
         } else {
-            res.push(bigInt.zero);
+            res.push(Fr.zero);
         }
     }
     return res;
 }
 
-const q = bigInt("21888242871839275222246405745257275088548364400416034343698204186575808495617");
+const q = Scalar.fromString("21888242871839275222246405745257275088548364400416034343698204186575808495617");
 
-describe("Sign test", () => {
+describe("Sign test", function() {
     let circuit;
+    this.timeout(100000);
+
     before( async() => {
-        const cirDef = await compiler(path.join(__dirname, "circuits", "sign_test.circom"));
-
-        circuit = new snarkjs.Circuit(cirDef);
-
-        console.log("NConstrains: " + circuit.nConstraints);
+        circuit = await tester(path.join(__dirname, "circuits", "sign_test.circom"));
     });
 
     it("Sign of 0", async () => {
-        const inp = getBits(bigInt.zero, 254);
-        const w = circuit.calculateWitness({in: inp});
+        const inp = getBits(Scalar.e(0), 254);
+        const w = await circuit.calculateWitness({in: inp}, true);
 
-        assert( w[circuit.getSignalIdx("main.sign")].equals(bigInt(0)) );
+        await circuit.assertOut(w, {sign: 0});
     });
 
     it("Sign of 3", async () => {
-        const inp = getBits(bigInt(3), 254);
-        const w = circuit.calculateWitness({in: inp});
+        const inp = getBits(Scalar.e(3), 254);
+        const w = await circuit.calculateWitness({in: inp}, true);
 
-        assert( w[circuit.getSignalIdx("main.sign")].equals(bigInt(0)) );
+        await circuit.assertOut(w, {sign: 0});
     });
 
     it("Sign of q/2", async () => {
-        const inp = getBits(q.shr(bigInt.one), 254);
-        const w = circuit.calculateWitness({in: inp});
+        const inp = getBits(Scalar.shr(q, 1), 254);
+        const w = await circuit.calculateWitness({in: inp}, true);
 
-        assert( w[circuit.getSignalIdx("main.sign")].equals(bigInt(0)) );
+        await circuit.assertOut(w, {sign: 0});
     });
 
     it("Sign of q/2+1", async () => {
-        const inp = getBits(q.shr(bigInt.one).add(bigInt.one), 254);
-        const w = circuit.calculateWitness({in: inp});
+        const inp = getBits(Scalar.add(Scalar.shr(q, 1), 1) , 254);
+        const w = await circuit.calculateWitness({in: inp}, true);
 
-        assert( w[circuit.getSignalIdx("main.sign")].equals(bigInt(1)) );
+        await circuit.assertOut(w, {sign: 1});
     });
 
     it("Sign of q-1", async () => {
-        const inp = getBits(q.sub(bigInt.one), 254);
-        const w = circuit.calculateWitness({in: inp});
+        const inp = getBits(Scalar.sub(q, 1), 254);
+        const w = await circuit.calculateWitness({in: inp}, true);
 
-        assert( w[circuit.getSignalIdx("main.sign")].equals(bigInt(1)) );
+        await circuit.assertOut(w, {sign: 1});
     });
 
     it("Sign of q", async () => {
         const inp = getBits(q, 254);
-        const w = circuit.calculateWitness({in: inp});
+        const w = await circuit.calculateWitness({in: inp}, true);
 
-        assert( w[circuit.getSignalIdx("main.sign")].equals(bigInt(1)) );
+        await circuit.assertOut(w, {sign: 1});
     });
 
     it("Sign of all ones", async () => {
-        const inp = getBits(bigInt(1).shl(254).sub(bigInt(1)), 254);
-        const w = circuit.calculateWitness({in: inp});
+        const inp = getBits(Scalar.sub(Scalar.shl(1,254),1), 254);
+        const w = await circuit.calculateWitness({in: inp}, true);
 
-        assert( w[circuit.getSignalIdx("main.sign")].equals(bigInt(1)) );
+        await circuit.assertOut(w, {sign: 1});
     });
-
-
 });

test/smtjs.js

@@ -1,29 +1,11 @@
 const chai = require("chai");
-const snarkjs = require("snarkjs");
+
+const Fr = require("ffjavascript").bn128.Fr;
 
 const smt = require("../src/smt.js");
 
 const assert = chai.assert;
 
-const bigInt = snarkjs.bigInt;
-
-
-function stringifyBigInts(o) {
-    if ((typeof(o) == "bigint") || (o instanceof bigInt))  {
-        return o.toString(10);
-    } else if (Array.isArray(o)) {
-        return o.map(stringifyBigInts);
-    } else if (typeof o == "object") {
-        const res = {};
-        for (let k in o) {
-            res[k] = stringifyBigInts(o[k]);
-        }
-        return res;
-    } else {
-        return o;
-    }
-}
-
 describe("SMT Javascript test", function () {
     this.timeout(100000);
     before( async () => {
@@ -31,22 +13,22 @@ describe("SMT Javascript test", function () {
 
     it("Should insert 2 elements and empty them", async () => {
         const tree = await smt.newMemEmptyTrie();
-        const key1 = bigInt(111);
-        const value1 = bigInt(222);
-        const key2 = bigInt(333);
-        const value2 = bigInt(444);
+        const key1 = Fr.e(111);
+        const value1 = Fr.e(222);
+        const key2 = Fr.e(333);
+        const value2 = Fr.e(444);
 
         await tree.insert(key1,value1);
         await tree.insert(key2,value2);
         await tree.delete(key2);
         await tree.delete(key1);
 
-        assert(tree.root.isZero());
+        assert(Fr.isZero(tree.root));
     });
 
     it("Should insert 3 elements in dferent order and should be the same", async () => {
-        const keys = [bigInt(8), bigInt(9), bigInt(32)];
-        const values = [bigInt(88), bigInt(99), bigInt(3232)];
+        const keys = [Fr.e(8), Fr.e(9), Fr.e(32)];
+        const values = [Fr.e(88), Fr.e(99), Fr.e(3232)];
         const tree1 = await smt.newMemEmptyTrie();
         const tree2 = await smt.newMemEmptyTrie();
         const tree3 = await smt.newMemEmptyTrie();
@@ -78,11 +60,11 @@ describe("SMT Javascript test", function () {
         await tree6.insert(keys[1],values[1]);
         await tree6.insert(keys[0],values[0]);
 
-        assert(tree1.root.equals(tree2.root));
-        assert(tree2.root.equals(tree3.root));
-        assert(tree3.root.equals(tree4.root));
-        assert(tree4.root.equals(tree5.root));
-        assert(tree5.root.equals(tree6.root));
+        assert(Fr.eq(tree1.root, tree2.root));
+        assert(Fr.eq(tree2.root, tree3.root));
+        assert(Fr.eq(tree3.root, tree4.root));
+        assert(Fr.eq(tree4.root, tree5.root));
+        assert(Fr.eq(tree5.root, tree6.root));
 
         assert.equal(Object.keys(tree1.db.nodes).length,  Object.keys(tree2.db.nodes).length);
         assert.equal(Object.keys(tree2.db.nodes).length,  Object.keys(tree3.db.nodes).length);
@@ -94,19 +76,19 @@ describe("SMT Javascript test", function () {
         await tree1.delete(keys[1]);
         await tree2.delete(keys[1]);
         await tree2.delete(keys[0]);
-        assert(tree1.root.equals(tree2.root));
+        assert(Fr.eq(tree1.root, tree2.root));
 
         await tree3.delete(keys[0]);
         await tree3.delete(keys[2]);
         await tree4.delete(keys[2]);
         await tree4.delete(keys[0]);
-        assert(tree3.root.equals(tree4.root));
+        assert(Fr.eq(tree3.root, tree4.root));
 
         await tree5.delete(keys[1]);
         await tree5.delete(keys[2]);
         await tree6.delete(keys[2]);
         await tree6.delete(keys[1]);
-        assert(tree5.root.equals(tree6.root));
+        assert(Fr.eq(tree5.root, tree6.root));
 
         await tree1.delete(keys[2]);
         await tree2.delete(keys[2]);
@@ -115,12 +97,12 @@ describe("SMT Javascript test", function () {
         await tree5.delete(keys[0]);
         await tree6.delete(keys[0]);
 
-        assert(tree1.root.isZero());
-        assert(tree2.root.isZero());
-        assert(tree3.root.isZero());
-        assert(tree4.root.isZero());
-        assert(tree5.root.isZero());
-        assert(tree6.root.isZero());
+        assert(Fr.isZero(tree1.root));
+        assert(Fr.isZero(tree2.root));
+        assert(Fr.isZero(tree3.root));
+        assert(Fr.isZero(tree4.root));
+        assert(Fr.isZero(tree5.root));
+        assert(Fr.isZero(tree6.root));
 
         assert.equal(Object.keys(tree1.db.nodes).length, 0);
         assert.equal(Object.keys(tree2.db.nodes).length, 0);
@@ -145,7 +127,7 @@ describe("SMT Javascript test", function () {
         const arr = [];
         const N = 100;
         for (let i=0; i<N; i++) {
-            arr.push(bigInt(i));
+            arr.push(Fr.e(i));
         }
         const insArr = perm(arr);
         for (let i=0; i<N; i++) {
@@ -156,7 +138,7 @@ describe("SMT Javascript test", function () {
             await tree.delete(delArr[i]);
         }
 
-        assert(tree.root.isZero());
+        assert(Fr.isZero(tree.root));
         assert.equal(Object.keys(tree.db.nodes).length, 0);
     });
 
@@ -176,7 +158,16 @@ describe("SMT Javascript test", function () {
         await tree1.update(9, 999);
         await tree1.update(32, 323232);
 
-        assert(tree1.root.equals(tree2.root));
+        assert(Fr.eq(tree1.root, tree2.root));
     });
 
+    it("Should test update with same key-value", async () => {
+        const tree1 = await smt.newMemEmptyTrie();
+
+        await tree1.insert(8,88);
+        await tree1.update(8,88);
+
+        const res = await tree1.db.get(tree1.root);
+        assert.notEqual(res, undefined);
+    });
 });

test/smtprocessor.js

@@ -1,25 +1,23 @@
 const chai = require("chai");
 const path = require("path");
-const snarkjs = require("snarkjs");
-const compiler = require("circom");
+const tester = require("circom").tester;
+const Fr = require("ffjavascript").bn128.Fr;
 
 const smt = require("../src/smt.js");
 
 const assert = chai.assert;
 
-const bigInt = snarkjs.bigInt;
-
 function print(circuit, w, s) {
     console.log(s + ": " + w[circuit.getSignalIdx(s)]);
 }
 
-async function testInsert(tree, key, value, circuit, log ) {
+async function testInsert(tree, key, value, circuit ) {
 
     const res = await tree.insert(key,value);
     let siblings = res.siblings;
-    while (siblings.length<10) siblings.push(bigInt(0));
+    while (siblings.length<10) siblings.push(Fr.e(0));
 
-    const w = circuit.calculateWitness({
+    const w = await circuit.calculateWitness({
         fnc: [1,0],
         oldRoot: res.oldRoot,
         siblings: siblings,
@@ -28,19 +26,20 @@ async function testInsert(tree, key, value, circuit, log ) {
         isOld0: res.isOld0 ? 1 : 0,
         newKey: key,
         newValue: value
-    }, log);
+    }, true);
+
+    await circuit.checkConstraints(w);
+
+    await circuit.assertOut(w, {newRoot: res.newRoot});
 
-    const root1 = w[circuit.getSignalIdx("main.newRoot")];
-    assert(circuit.checkWitness(w));
-    assert(root1.equals(res.newRoot));
 }
 
 async function testDelete(tree, key, circuit) {
     const res = await tree.delete(key);
     let siblings = res.siblings;
-    while (siblings.length<10) siblings.push(bigInt(0));
+    while (siblings.length<10) siblings.push(Fr.e(0));
 
-    const w = circuit.calculateWitness({
+    const w = await circuit.calculateWitness({
         fnc: [1,1],
         oldRoot: res.oldRoot,
         siblings: siblings,
@@ -49,20 +48,19 @@ async function testDelete(tree, key, circuit) {
         isOld0: res.isOld0 ? 1 : 0,
         newKey: res.delKey,
         newValue: res.delValue
-    });
+    }, true);
 
-    const root1 = w[circuit.getSignalIdx("main.newRoot")];
+    await circuit.checkConstraints(w);
 
-    assert(circuit.checkWitness(w));
-    assert(root1.equals(res.newRoot));
+    await circuit.assertOut(w, {newRoot: res.newRoot});
 }
 
 async function testUpdate(tree, key, newValue, circuit) {
     const res = await tree.update(key, newValue);
     let siblings = res.siblings;
-    while (siblings.length<10) siblings.push(bigInt(0));
+    while (siblings.length<10) siblings.push(Fr.e(0));
 
-    const w = circuit.calculateWitness({
+    const w = await circuit.calculateWitness({
         fnc: [0,1],
         oldRoot: res.oldRoot,
         siblings: siblings,
@@ -73,53 +71,47 @@ async function testUpdate(tree, key, newValue, circuit) {
         newValue: res.newValue
     });
 
-    const root1 = w[circuit.getSignalIdx("main.newRoot")];
+    await circuit.checkConstraints(w);
 
-    assert(circuit.checkWitness(w));
-    assert(root1.equals(res.newRoot));
+    await circuit.assertOut(w, {newRoot: res.newRoot});
 }
 
 
-describe("SMT test", function () {
+describe("SMT Processor test", function () {
     let circuit;
     let tree;
 
     this.timeout(10000000);
 
     before( async () => {
-        const cirDef = await compiler(path.join(__dirname, "circuits", "smtprocessor10_test.circom"));
-
-        circuit = new snarkjs.Circuit(cirDef);
-
-        console.log("NConstrains SMTProcessor: " + circuit.nConstraints);
+        circuit = await tester(path.join(__dirname, "circuits", "smtprocessor10_test.circom"));
+        await circuit.loadSymbols();
 
         tree = await smt.newMemEmptyTrie();
     });
 
     it("Should verify an insert to an empty tree", async () => {
-        const key = bigInt(111);
-        const value = bigInt(222);
+        const key = Fr.e(111);
+        const value = Fr.e(222);
 
         await testInsert(tree, key, value, circuit);
     });
 
     it("It should add another element", async () => {
-        const key = bigInt(333);
-        const value = bigInt(444);
+        const key = Fr.e(333);
+        const value = Fr.e(444);
 
         await testInsert(tree, key, value, circuit);
     });
 
-
-
     it("Should remove an element", async () => {
         await testDelete(tree, 111, circuit);
         await testDelete(tree, 333, circuit);
     });
 
     it("Should test convination of adding and removing 3 elements", async () => {
-        const keys = [bigInt(8), bigInt(9), bigInt(32)];
-        const values = [bigInt(88), bigInt(99), bigInt(3232)];
+        const keys = [Fr.e(8), Fr.e(9), Fr.e(32)];
+        const values = [Fr.e(88), Fr.e(99), Fr.e(3232)];
         const tree1 = await smt.newMemEmptyTrie();
         const tree2 = await smt.newMemEmptyTrie();
         const tree3 = await smt.newMemEmptyTrie();
@@ -178,8 +170,8 @@ describe("SMT test", function () {
 
     it("Should match a NOp with random vals", async () => {
         let siblings = [];
-        while (siblings.length<10) siblings.push(bigInt(88));
-        const w = circuit.calculateWitness({
+        while (siblings.length<10) siblings.push(Fr.e(88));
+        const w = await circuit.calculateWitness({
             fnc: [0,0],
             oldRoot: 11,
             siblings: siblings,
@@ -190,12 +182,12 @@ describe("SMT test", function () {
             newValue: 77
         });
 
-        const root1 = w[circuit.getSignalIdx("main.oldRoot")];
-        const root2 = w[circuit.getSignalIdx("main.newRoot")];
+        const root1 = w[circuit.symbols["main.oldRoot"].varIdx];
+        const root2 = w[circuit.symbols["main.newRoot"].varIdx];
 
-        assert(circuit.checkWitness(w));
-        assert(root1.equals(root2));
+        await circuit.checkConstraints(w);
 
+        assert(Fr.eq(root1, root2));
     });
     it("Should update an element", async () => {
         const tree1 = await smt.newMemEmptyTrie();
@@ -213,5 +205,4 @@ describe("SMT test", function () {
         await testUpdate(tree1, 9, 999, circuit);
         await testUpdate(tree1, 32, 323232, circuit);
     });
-
 });

test/smtverifier.js

@@ -1,14 +1,12 @@
 const chai = require("chai");
 const path = require("path");
-const snarkjs = require("snarkjs");
-const compiler = require("circom");
+const Fr = require("ffjavascript").bn128.Fr;
+const tester = require("circom").tester;
 
 const smt = require("../src/smt.js");
 
 const assert = chai.assert;
 
-const bigInt = snarkjs.bigInt;
-
 function print(circuit, w, s) {
     console.log(s + ": " + w[circuit.getSignalIdx(s)]);
 }
@@ -19,9 +17,9 @@ async function testInclusion(tree, key, circuit) {
 
     assert(res.found);
     let siblings = res.siblings;
-    while (siblings.length<10) siblings.push(bigInt(0));
+    while (siblings.length<10) siblings.push(Fr.e(0));
 
-    const w = circuit.calculateWitness({
+    const w = await circuit.calculateWitness({
         enabled: 1,
         fnc: 0,
         root: tree.root,
@@ -31,9 +29,10 @@ async function testInclusion(tree, key, circuit) {
         isOld0: 0,
         key: key,
         value: res.foundValue
-    });
+    }, true);
+
+    await circuit.checkConstraints(w);
 
-    assert(circuit.checkWitness(w));
 }
 
 async function testExclusion(tree, key, circuit) {
@@ -41,9 +40,9 @@ async function testExclusion(tree, key, circuit) {
 
     assert(!res.found);
     let siblings = res.siblings;
-    while (siblings.length<10) siblings.push(bigInt(0));
+    while (siblings.length<10) siblings.push(Fr.e(0));
 
-    const w = circuit.calculateWitness({
+    const w = await circuit.calculateWitness({
         enabled: 1,
         fnc: 1,
         root: tree.root,
@@ -55,21 +54,18 @@ async function testExclusion(tree, key, circuit) {
         value: 0
     });
 
-    assert(circuit.checkWitness(w));
+    await circuit.checkConstraints(w);
+
 }
 
-describe("SMT test", function () {
+describe("SMT Verifier test", function () {
     let circuit;
     let tree;
 
     this.timeout(100000);
 
     before( async () => {
-        const cirDef = await compiler(path.join(__dirname, "circuits", "smtverifier10_test.circom"));
-
-        circuit = new snarkjs.Circuit(cirDef);
-
-        console.log("NConstrains SMTVerifier: " + circuit.nConstraints);
+        circuit = await tester(path.join(__dirname, "circuits", "smtverifier10_test.circom"));
 
         tree = await smt.newMemEmptyTrie();
         await tree.insert(7,77);
@@ -97,7 +93,7 @@ describe("SMT test", function () {
         let siblings = [];
         for (let i=0; i<10; i++) siblings.push(i);
 
-        const w = circuit.calculateWitness({
+        const w = await circuit.calculateWitness({
             enabled: 0,
             fnc: 0,
             root: 1,
@@ -108,7 +104,32 @@ describe("SMT test", function () {
             key: 44,
             value: 0
         });
-        assert(circuit.checkWitness(w));
+
+
+        await circuit.checkConstraints(w);
+    });
+
+    it("Check inclussion Adria case", async () => {
+        const e1_hi= Fr.e("17124152697573569611556136390143205198134245887034837071647643529178599000839");
+        const e1_hv= Fr.e("19650379996168153643111744440707177573540245771926102415571667548153444658179");
+
+        const e2ok_hi= Fr.e("16498254692537945203721083102154618658340563351558973077349594629411025251262");
+        const e2ok_hv= Fr.e("19650379996168153643111744440707177573540245771926102415571667548153444658179");
+
+        const e2fail_hi= Fr.e("17195092312975762537892237130737365903429674363577646686847513978084990105579");
+        const e2fail_hv= Fr.e("19650379996168153643111744440707177573540245771926102415571667548153444658179");
+
+        const tree1 = await smt.newMemEmptyTrie();
+        await tree1.insert(e1_hi,e1_hv);
+        await tree1.insert(e2ok_hi,e2ok_hv);
+
+        await testInclusion(tree1, e2ok_hi, circuit);
+
+        const tree2 = await smt.newMemEmptyTrie();
+        await tree2.insert(e1_hi,e1_hv);
+        await tree2.insert(e2fail_hi,e2fail_hv);
+
+        await testInclusion(tree2, e2fail_hi, circuit);
     });