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update poseidon with blake2b

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arnaucube
2019-06-28 10:50:49 +02:00
parent d689f737d8
commit 3bc864f110
5 changed files with 238 additions and 315 deletions
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7
src/poseidon.js
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@@ -1,6 +1,6 @@
const bn128 = require("snarkjs").bn128;
const bigInt = require("snarkjs").bigInt;
const createBlakeHash = require("blake-hash");
const blake2b = require('blake2b');
const assert = require("assert");
const F = bn128.Fr;
@@ -11,11 +11,12 @@ const T = 6;
function getPseudoRandom(seed, n) {
const res = [];
let h = createBlakeHash("blake256").update(seed).digest();
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 = createBlakeHash("blake256").update(h).digest();
h = blake2b(32).update(h).digest()
}
return res;