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poseidon: remove default sboxPower: 5

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Paul Miller 2023-08-21 15:04:58 +00:00
parent f90e871725
commit 62749382e7
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1 changed files with 2 additions and 3 deletions
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5
src/abstract/poseidon.ts
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@ -24,10 +24,9 @@ export function validateOpts(opts: PoseidonOpts) {
const rev = opts.reversePartialPowIdx; const rev = opts.reversePartialPowIdx;
if (rev !== undefined && typeof rev !== 'boolean') if (rev !== undefined && typeof rev !== 'boolean')
throw new Error(`Poseidon: invalid param reversePartialPowIdx=${rev}`); throw new Error(`Poseidon: invalid param reversePartialPowIdx=${rev}`);
// Default is 5, but for some reasons stark uses 3
let { sboxPower } = opts; let { sboxPower } = opts;
if (sboxPower === undefined) sboxPower = 5; if (!sboxPower || ![3, 5, 7].includes(sboxPower))
if (![3, 5, 7].includes(sboxPower)) throw new Error(`Poseidon wrong sboxPower=${sboxPower}`); throw new Error(`Poseidon wrong sboxPower=${sboxPower}`);
const _sboxPower = BigInt(sboxPower); const _sboxPower = BigInt(sboxPower);
let sboxFn = (n: bigint) => FpPow(Fp, n, _sboxPower); let sboxFn = (n: bigint) => FpPow(Fp, n, _sboxPower);