mirror of
https://github.com/arnaucube/blindsecp256k1-js.git
synced 2026-02-07 11:26:40 +01:00
Using up to date libraries for EC and BigNumber
This commit is contained in:
Jør∂¡
208
package-lock.json
generated
208
package-lock.json
generated
@@ -10,14 +10,13 @@
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||||
"license": "GPL-3.0",
|
||||
"dependencies": {
|
||||
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|
||||
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|
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|
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|
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|
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|
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|
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|
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@@ -531,14 +529,25 @@
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||||
"integrity": "sha512-taOaskGt4z4SOANNseOviYDvjEJinIkRgmp7LbKP2YTTmVxWBl87s/uzK9r+44BclBSp2X7K1hqeNfz9JbBeXA==",
|
||||
"requires": {
|
||||
"inherits": "^2.0.3",
|
||||
"minimalistic-assert": "^1.0.1"
|
||||
}
|
||||
},
|
||||
"he": {
|
||||
"version": "1.2.0",
|
||||
"resolved": "https://registry.npmjs.org/he/-/he-1.2.0.tgz",
|
||||
"integrity": "sha512-F/1DnUGPopORZi0ni+CvrCgHQ5FyEAHRLSApuYWMmrbSwoN2Mn/7k+Gl38gJnR7yyDZk6WLXwiGod1JOWNDKGw==",
|
||||
"dev": true
|
||||
},
|
||||
"hmac-drbg": {
|
||||
"version": "1.0.1",
|
||||
"resolved": "https://registry.npmjs.org/hmac-drbg/-/hmac-drbg-1.0.1.tgz",
|
||||
"integrity": "sha1-0nRXAQJabHdabFRXk+1QL8DGSaE=",
|
||||
"requires": {
|
||||
"hash.js": "^1.0.3",
|
||||
"minimalistic-assert": "^1.0.0",
|
||||
"minimalistic-crypto-utils": "^1.0.1"
|
||||
}
|
||||
},
|
||||
"inflight": {
|
||||
"version": "1.0.6",
|
||||
"resolved": "https://registry.npmjs.org/inflight/-/inflight-1.0.6.tgz",
|
||||
@@ -2273,8 +2344,7 @@
|
||||
"inherits": {
|
||||
"version": "2.0.4",
|
||||
"resolved": "https://registry.npmjs.org/inherits/-/inherits-2.0.4.tgz",
|
||||
"integrity": "sha512-k/vGaX4/Yla3WzyMCvTQOXYeIHvqOKtnqBduzTHpzpQZzAskKMhZ2K+EnBiSM9zGSoIFeMpXKxa4dYeZIQqewQ==",
|
||||
"dev": true
|
||||
"integrity": "sha512-k/vGaX4/Yla3WzyMCvTQOXYeIHvqOKtnqBduzTHpzpQZzAskKMhZ2K+EnBiSM9zGSoIFeMpXKxa4dYeZIQqewQ=="
|
||||
},
|
||||
"is-binary-path": {
|
||||
"version": "2.1.0",
|
||||
@@ -2378,6 +2448,16 @@
|
||||
"integrity": "sha512-s8UhlNe7vPKomQhC1qFelMokr/Sc3AgNbso3n74mVPA5LTZwkB9NlXf4XPamLxJE8h0gh73rM94xvwRT2CVInw==",
|
||||
"dev": true
|
||||
},
|
||||
"minimalistic-assert": {
|
||||
"version": "1.0.1",
|
||||
"resolved": "https://registry.npmjs.org/minimalistic-assert/-/minimalistic-assert-1.0.1.tgz",
|
||||
"integrity": "sha512-UtJcAD4yEaGtjPezWuO9wC4nwUnVH/8/Im3yEHQP4b67cXlD/Qr9hdITCU1xDbSEXg2XKNaP8jsReV7vQd00/A=="
|
||||
},
|
||||
"minimalistic-crypto-utils": {
|
||||
"version": "1.0.1",
|
||||
"resolved": "https://registry.npmjs.org/minimalistic-crypto-utils/-/minimalistic-crypto-utils-1.0.1.tgz",
|
||||
"integrity": "sha1-9sAMHAsIIkblxNmd+4x8CDsrWCo="
|
||||
},
|
||||
"minimatch": {
|
||||
"version": "3.0.4",
|
||||
"resolved": "https://registry.npmjs.org/minimatch/-/minimatch-3.0.4.tgz",
|
||||
|
||||
@@ -16,14 +16,13 @@
|
||||
"license": "GPL-3.0",
|
||||
"dependencies": {
|
||||
"@ethersproject/keccak256": "5.0.7",
|
||||
"bigi": "^1.4.2",
|
||||
"bignumber.js": "7.0.2",
|
||||
"ecurve": "1.0.0"
|
||||
"bn.js": "^5.1.3",
|
||||
"elliptic": "^6.5.4"
|
||||
},
|
||||
"devDependencies": {
|
||||
"@types/bigi": "^1.4.2",
|
||||
"@types/bn.js": "^5.1.0",
|
||||
"@types/chai": "^4.2.14",
|
||||
"@types/ecurve": "^1.0.0",
|
||||
"@types/elliptic": "^6.4.12",
|
||||
"@types/mocha": "^8.2.0",
|
||||
"@types/node": "^14.14.25",
|
||||
"chai": "^4.2.0",
|
||||
|
||||
97
src/index.ts
97
src/index.ts
@@ -1,71 +1,82 @@
|
||||
import { randomBytes } from 'crypto'
|
||||
import * as BigInteger from 'bigi'
|
||||
import { getCurveByName, Point } from 'ecurve'
|
||||
import * as BigNumber from 'bn.js'
|
||||
import { ec, curve } from 'elliptic'
|
||||
import { keccak256 } from "@ethersproject/keccak256"
|
||||
|
||||
const ecparams = getCurveByName('secp256k1')
|
||||
const G = ecparams.G
|
||||
const n = ecparams.n as BigInteger
|
||||
export type Point = curve.base.BasePoint
|
||||
export { BigNumber }
|
||||
|
||||
export { ecparams }
|
||||
const secp256k1 = new ec("secp256k1")
|
||||
const G: Point = secp256k1.g
|
||||
const n = secp256k1.n // as BigNumber
|
||||
|
||||
export type UserSecretData = { a: BigInteger, b: BigInteger, f: Point }
|
||||
export type UnblindedSignature = { s: BigInteger, f: Point }
|
||||
export const ecParams = { G, n }
|
||||
|
||||
export function newBigFromString(s: string) {
|
||||
let a = new BigInteger(null, null, null)
|
||||
a.fromString(s, null)
|
||||
return a
|
||||
export type UserSecretData = { a: BigNumber, b: BigNumber, f: Point }
|
||||
export type UnblindedSignature = { s: BigNumber, f: Point }
|
||||
|
||||
export function hashBigNumber(m: BigNumber) {
|
||||
const mHex = m.toString(16)
|
||||
|
||||
if (mHex.length % 2 == 0)
|
||||
return keccak256('0x' + mHex).slice(2) // Trim 0x
|
||||
else
|
||||
return keccak256('0x0' + mHex).slice(2) // Trim 0x
|
||||
}
|
||||
|
||||
export function bigNumberFromString(s: string) {
|
||||
return new BigNumber(s)
|
||||
}
|
||||
|
||||
function random(bytes: number) {
|
||||
let k: BigInteger
|
||||
let k: BigNumber
|
||||
do {
|
||||
k = BigInteger.fromByteArrayUnsigned(randomBytes(bytes)) as unknown as BigInteger
|
||||
k = new BigNumber(randomBytes(bytes))
|
||||
} while (k.toString() == "0" && k.gcd(n).toString() != "1")
|
||||
return k
|
||||
}
|
||||
|
||||
export function newKeyPair() {
|
||||
const sk = random(32)
|
||||
return { sk: sk, pk: G.multiply(sk) }
|
||||
return { sk: sk, pk: G.mul(sk) }
|
||||
}
|
||||
|
||||
export function newRequestParameters() {
|
||||
const k = random(32)
|
||||
return { k: k, signerR: G.multiply(k) }
|
||||
return { k: k, signerR: G.mul(k) }
|
||||
}
|
||||
|
||||
/**
|
||||
* Blinds the message for the signer R.
|
||||
* @param {BigInteger} m
|
||||
* @param {BigNumber} m
|
||||
* @param {Point} signerR
|
||||
* @returns {struct} {mBlinded: BigInteger, userSecretData: {a: BigInteger, b: BigInteger, f: Point}}
|
||||
* @returns {struct} {mBlinded: BigNumber, userSecretData: {a: BigNumber, b: BigNumber, f: Point}}
|
||||
*/
|
||||
export function blind(m: BigInteger, signerR: Point): { mBlinded: BigInteger, userSecretData: UserSecretData } {
|
||||
const u: UserSecretData = { a: BigInteger.ZERO as BigInteger, b: BigInteger.ZERO as BigInteger, f: G }
|
||||
export function blind(m: BigNumber, signerR: Point): { mBlinded: BigNumber, userSecretData: UserSecretData } {
|
||||
const u: UserSecretData = { a: new BigNumber(0), b: new BigNumber(0), f: G }
|
||||
u.a = random(32)
|
||||
u.b = random(32)
|
||||
|
||||
const aR = signerR.multiply(u.a)
|
||||
const bG = G.multiply(u.b)
|
||||
const aR = signerR.mul(u.a)
|
||||
const bG = G.mul(u.b)
|
||||
u.f = aR.add(bG)
|
||||
|
||||
const rx = u.f.affineX.mod(n)
|
||||
const rx = u.f.getX().mod(n)
|
||||
|
||||
const ainv = u.a.modInverse(n as unknown as number)
|
||||
const ainvrx = ainv.multiply(rx)
|
||||
const ainv = u.a.invm(n)
|
||||
const ainvrx = ainv.mul(rx)
|
||||
|
||||
const mHex = m.toString(16)
|
||||
const hHex = keccak256('0x' + mHex)
|
||||
const h = BigInteger.fromHex(hHex.slice(2))
|
||||
const mBlinded = ainvrx.multiply(h)
|
||||
// const mHex = m.toString(16)
|
||||
const hHex = hashBigNumber(m)
|
||||
|
||||
const h = new BigNumber(Buffer.from(hHex, "hex"))
|
||||
const mBlinded = ainvrx.mul(h)
|
||||
|
||||
return { mBlinded: mBlinded.mod(n), userSecretData: u }
|
||||
}
|
||||
|
||||
export function blindSign(sk: BigInteger, mBlinded: BigInteger, k: BigInteger): BigInteger {
|
||||
let sBlind = sk.multiply(mBlinded)
|
||||
export function blindSign(sk: BigNumber, mBlinded: BigNumber, k: BigNumber): BigNumber {
|
||||
let sBlind = sk.mul(mBlinded)
|
||||
sBlind = sBlind.add(k)
|
||||
return sBlind.mod(n)
|
||||
}
|
||||
@@ -76,27 +87,27 @@ export function blindSign(sk: BigInteger, mBlinded: BigInteger, k: BigInteger):
|
||||
* @param userSecretData
|
||||
* @returns unblinded signature
|
||||
*/
|
||||
export function unblind(sBlind: BigInteger, userSecretData: UserSecretData): UnblindedSignature {
|
||||
const s = userSecretData.a.multiply(sBlind).add(userSecretData.b)
|
||||
export function unblind(sBlind: BigNumber, userSecretData: UserSecretData): UnblindedSignature {
|
||||
const s = userSecretData.a.mul(sBlind).add(userSecretData.b)
|
||||
return { s: s.mod(n), f: userSecretData.f }
|
||||
}
|
||||
|
||||
export function verify(m: BigInteger, s: UnblindedSignature, q: Point) {
|
||||
const sG = G.multiply(s.s)
|
||||
export function verify(m: BigNumber, s: UnblindedSignature, q: Point) {
|
||||
const sG = G.mul(s.s)
|
||||
|
||||
const mHex = m.toString(16)
|
||||
const hHex = keccak256('0x' + mHex)
|
||||
const h = BigInteger.fromHex(hHex.slice(2))
|
||||
const hHex = hashBigNumber(m)
|
||||
|
||||
const h = new BigNumber(Buffer.from(hHex, "hex"))
|
||||
|
||||
const rx = s.f.affineX.mod(n)
|
||||
const rx = s.f.getX().mod(n)
|
||||
const right = s.f.add(
|
||||
q.multiply(
|
||||
rx.multiply(h)
|
||||
q.mul(
|
||||
rx.mul(h)
|
||||
)
|
||||
)
|
||||
|
||||
if ((sG.affineX.toString() == right.affineX.toString())
|
||||
&& (sG.affineY.toString() == right.affineY.toString())) {
|
||||
if ((sG.getX().toString() == right.getX().toString())
|
||||
&& (sG.getY().toString() == right.getY().toString())) {
|
||||
return true
|
||||
}
|
||||
return false
|
||||
|
||||
@@ -1,18 +1,27 @@
|
||||
import * as assert from 'assert'
|
||||
import * as BigInteger from 'bigi'
|
||||
// import { Point } from 'ecurve'
|
||||
import { keccak256 } from "@ethersproject/keccak256"
|
||||
|
||||
import { newBigFromString, ecparams, newKeyPair, newRequestParameters, blind, blindSign, unblind, verify } from "../src/index"
|
||||
import {
|
||||
bigNumberFromString,
|
||||
ecParams,
|
||||
newKeyPair,
|
||||
newRequestParameters,
|
||||
blind,
|
||||
blindSign,
|
||||
unblind,
|
||||
verify,
|
||||
hashBigNumber,
|
||||
Point,
|
||||
BigNumber
|
||||
} from "../src/index"
|
||||
|
||||
describe("keccak256", function () {
|
||||
it("keccak256", async () => {
|
||||
const m = BigInteger.fromBuffer(Buffer.from("test", 'utf8'))
|
||||
const mHex = m.toString(16)
|
||||
const hHex = keccak256('0x' + mHex)
|
||||
assert.strictEqual('0x9c22ff5f21f0b81b113e63f7db6da94fedef11b2119b4088b89664fb9a3cb658', hHex)
|
||||
const h = BigInteger.fromHex(hHex.slice(2))
|
||||
assert.strictEqual('70622639689279718371527342103894932928233838121221666359043189029713682937432', h.toString())
|
||||
const msg = Buffer.from("test", 'utf8')
|
||||
const m = new BigNumber(msg)
|
||||
const hHex = hashBigNumber(m)
|
||||
assert.strictEqual(hHex, '9c22ff5f21f0b81b113e63f7db6da94fedef11b2119b4088b89664fb9a3cb658')
|
||||
const h = new BigNumber(Buffer.from(hHex, "hex"))
|
||||
assert.strictEqual(h.toString(), '70622639689279718371527342103894932928233838121221666359043189029713682937432')
|
||||
})
|
||||
})
|
||||
|
||||
@@ -22,7 +31,7 @@ describe("test blind", function () {
|
||||
|
||||
const { k, signerR } = newRequestParameters()
|
||||
|
||||
const msg = BigInteger.fromBuffer(
|
||||
const msg = new BigNumber(
|
||||
Buffer.from("test", 'utf8')
|
||||
)
|
||||
assert.strictEqual('1952805748', msg.toString())
|
||||
|
||||
Reference in New Issue
Block a user