tornado-packages/ethers.js
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Allow non-bytes32 values for r and s in Signature.

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This commit is contained in:
Richard Moore 2022-12-30 16:32:17 -05:00
parent 2eb48231f1
commit a63f84cda7
1 changed files with 9 additions and 8 deletions
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17
src.ts/crypto/signature.ts
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@ -1,7 +1,7 @@
import { ZeroHash } from "../constants/index.js";
import {
concat, dataLength, getBigInt, getBytes, getNumber, hexlify,
isHexString,
toBeArray, isHexString, zeroPadValue,
assertArgument, assertPrivate
} from "../utils/index.js";
@ -42,6 +42,10 @@ export type SignatureLike = Signature | string | {
yParityAndS?: string;
};
function toUint256(value: BigNumberish): string {
return zeroPadValue(toBeArray(value), 32);
}
/**
* A Signature @TODO
*/
@ -291,16 +295,13 @@ export class Signature {
if (sig instanceof Signature) { return sig.clone(); }
// Get r
const r = sig.r;
assertError(r != null, "missing r");
assertError(isHexString(r, 32), "invalid r");
const _r = sig.r;
assertError(_r != null, "missing r");
const r = toUint256(_r);
// Get s; by any means necessary (we check consistency below)
const s = (function(s?: string, yParityAndS?: string) {
if (s != null) {
assertError(isHexString(s, 32), "invalid s");
return s;
}
if (s != null) { return toUint256(s); }
if (yParityAndS != null) {
assertError(isHexString(yParityAndS, 32), "invalid yParityAndS");