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Add initial version of deposit circuit

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arnaucube
2020-05-11 12:02:02 +02:00
parent 2179505f3b
commit 835ddb8810
3 changed files with 162 additions and 5 deletions
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84
circuits/deposit.circom Normal file
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@@ -0,0 +1,84 @@
/*
# deposit.circom
+----------+ +----------+
PUB_nullifier+------>+ | | |
| | | SMT |
PUB_coinCode+------->+ | | Poseidon +<------+PUB_rootOld
| Poseidon +-+----------->+ Verifier |
PUB_amount+--------->+ | | | Non |
| | | | Existance+<------+PRI_siblings
PRI_secret+--------->+ | | | | +
+----------+ | +----------+ |
| |
| |
| +----------+ |
| | | |
| | | |
+----+ | | SMT +<---------+
PUB_commitment+----> == +<--------+----------->+ Poseidon |
+----+ | Verifier |
| +<------+PUB_rootNew
| |
+----------+
*/
include "../node_modules/circomlib/circuits/comparators.circom";
include "../node_modules/circomlib/circuits/poseidon.circom";
include "../node_modules/circomlib/circuits/smt/smtverifier.circom";
template Deposit(nLevels) {
signal input coinCode;
signal input amount;
signal private input secret;
signal input nullifier;
signal private input siblingsOld[nLevels];
signal private input siblingsNew[nLevels];
signal input rootOld;
signal input rootNew;
signal input commitment;
component hash = Poseidon(4, 6, 8, 57);
hash.inputs[0] <== coinCode;
hash.inputs[1] <== amount;
hash.inputs[2] <== secret;
hash.inputs[3] <== nullifier;
component comCheck = IsEqual();
comCheck.in[0] <== hash.out;
comCheck.in[1] <== commitment;
comCheck.out === 1;
// TODO instead of 2 siblings input, get siblingsOld from siblingsNew[len-1]
component smtOld = SMTVerifier(nLevels);
smtOld.enabled <== 1;
smtOld.fnc <== 1;
smtOld.root <== rootOld;
for (var i=0; i<nLevels; i++) {
smtOld.siblings[i] <== siblingsOld[i];
}
smtOld.oldKey <== 1;
smtOld.oldValue <== 0;
smtOld.isOld0 <== 0;
smtOld.key <== hash.out;
smtOld.value <== 0;
component smtNew = SMTVerifier(nLevels);
smtNew.enabled <== 1;
smtNew.fnc <== 0;
smtNew.root <== rootNew;
for (var i=0; i<nLevels; i++) {
smtNew.siblings[i] <== siblingsNew[i];
}
smtNew.oldKey <== 0;
smtNew.oldValue <== 0;
smtNew.isOld0 <== 0;
smtNew.key <== hash.out;
smtNew.value <== 0;
}
component main = Deposit(5);

11
circuits/withdraw.circom
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@@ -5,16 +5,17 @@ WARNING: WIP, very initial version of the miksi circuit
+----------+
| |
PUB_nullifier+------>+----------+ | |
-----------+ +----------+
PUB_nullifier+------>+ | | |
| | | |
PUB_coinCode+------->+ | | SMT +<------+PRI_siblings
| | | Poseidon |
PUB_amount+--------->+ Poseidon +------------->+ Verifier |
| Poseidon +------------->+ Poseidon |
PUB_amount+--------->+ | | Verifier |
| | | +<------+PUB_root
PRI_secret+--------->+ | | | +
+----------+ +----------+ |
|
|
+----+ +----+ |
PUB_address+--->+ != +<-------+0+------>+ != +<-------+
+----+ +----+