tornado-packages/ethers.js
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Migrate to curves.

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This commit is contained in:
Richard Moore 2023-06-07 20:54:12 -04:00
parent 026c5bb137
commit 4a3d24cd36
2 changed files with 17 additions and 25 deletions
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4
package.json
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@ -10,8 +10,8 @@
},
"dependencies": {
"@adraffy/ens-normalize": "1.9.2",
"@noble/hashes": "1.1.2",
"@noble/secp256k1": "1.7.1",
"@noble/hashes": "1.3.1",
"@noble/curves": "1.1.0",
"@types/node": "18.15.13",
"aes-js": "4.0.0-beta.5",
"tslib": "2.4.0",

38
src.ts/crypto/signing-key.ts
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@ -4,14 +4,13 @@
* @_subsection: api/crypto:Signing [about-signing]
*/
import * as secp256k1 from "@noble/secp256k1";
import { secp256k1 } from "@noble/curves/secp256k1";
import {
concat, dataLength, getBytes, getBytesCopy, hexlify, toBeHex,
assertArgument
} from "../utils/index.js";
import { computeHmac } from "./hmac.js";
import { Signature } from "./signature.js";
import type { BytesLike } from "../utils/index.js";
@ -19,13 +18,6 @@ import type { BytesLike } from "../utils/index.js";
import type { SignatureLike } from "./index.js";
//const N = BigInt("0xfffffffffffffffffffffffffffffffebaaedce6af48a03bbfd25e8cd0364141");
// Make noble-secp256k1 sync
secp256k1.utils.hmacSha256Sync = function(key: Uint8Array, ...messages: Array<Uint8Array>): Uint8Array {
return getBytes(computeHmac("sha256", key, concat(messages)));
}
/**
* A **SigningKey** provides high-level access to the elliptic curve
* cryptography (ECC) operations and key management.
@ -69,16 +61,14 @@ export class SigningKey {
sign(digest: BytesLike): Signature {
assertArgument(dataLength(digest) === 32, "invalid digest length", "digest", digest);
const [ sigDer, recid ] = secp256k1.signSync(getBytesCopy(digest), getBytesCopy(this.#privateKey), {
recovered: true,
canonical: true
const sig = secp256k1.sign(getBytesCopy(digest), getBytesCopy(this.#privateKey), {
lowS: true
});
const sig = secp256k1.Signature.fromHex(sigDer);
return Signature.from({
r: toBeHex("0x" + sig.r.toString(16), 32),
s: toBeHex("0x" + sig.s.toString(16), 32),
v: (recid ? 0x1c: 0x1b)
r: toBeHex(sig.r, 32),
s: toBeHex(sig.s, 32),
v: (sig.recovery ? 0x1c: 0x1b)
});
}
@ -106,7 +96,7 @@ export class SigningKey {
*/
computeSharedSecret(other: BytesLike): string {
const pubKey = SigningKey.computePublicKey(other);
return hexlify(secp256k1.getSharedSecret(getBytesCopy(this.#privateKey), getBytes(pubKey)));
return hexlify(secp256k1.getSharedSecret(getBytesCopy(this.#privateKey), getBytes(pubKey), false));
}
/**
@ -151,7 +141,7 @@ export class SigningKey {
bytes = pub;
}
const point = secp256k1.Point.fromHex(bytes);
const point = secp256k1.ProjectivePoint.fromHex(bytes);
return hexlify(point.toRawBytes(compressed));
}
@ -177,12 +167,14 @@ export class SigningKey {
assertArgument(dataLength(digest) === 32, "invalid digest length", "digest", digest);
const sig = Signature.from(signature);
const der = secp256k1.Signature.fromCompact(getBytesCopy(concat([ sig.r, sig.s ]))).toDERRawBytes();
const pubKey = secp256k1.recoverPublicKey(getBytesCopy(digest), der, sig.yParity);
let secpSig = secp256k1.Signature.fromCompact(getBytesCopy(concat([ sig.r, sig.s ])));
secpSig = secpSig.addRecoveryBit(sig.yParity);
const pubKey = secpSig.recoverPublicKey(getBytesCopy(digest));
assertArgument(pubKey != null, "invalid signautre for digest", "signature", signature);
return hexlify(pubKey);
return "0x" + pubKey.toHex(false);
}
/**
@ -196,8 +188,8 @@ export class SigningKey {
* addresses from parent public keys and chain codes.
*/
static addPoints(p0: BytesLike, p1: BytesLike, compressed?: boolean): string {
const pub0 = secp256k1.Point.fromHex(SigningKey.computePublicKey(p0).substring(2));
const pub1 = secp256k1.Point.fromHex(SigningKey.computePublicKey(p1).substring(2));
const pub0 = secp256k1.ProjectivePoint.fromHex(SigningKey.computePublicKey(p0).substring(2));
const pub1 = secp256k1.ProjectivePoint.fromHex(SigningKey.computePublicKey(p1).substring(2));
return "0x" + pub0.add(pub1).toHex(!!compressed)
}
}