@ckb-ccc/core/dist/signer/ckb/verifyCkbSecp256k1.js

Core of CCC - CKBer's Codebase

import { secp256k1 } from "@noble/curves/secp256k1";
import { bytesFrom } from "../../bytes/index.js";
import { hashCkb } from "../../hasher/index.js";
import { hexFrom } from "../../hex/index.js";
import { numFrom } from "../../num/index.js";
/**
 * @public
 */
export function messageHashCkbSecp256k1(message) {
    const msg = typeof message === "string" ? message : hexFrom(message);
    const buffer = bytesFrom(`Nervos Message:${msg}`, "utf8");
    return hashCkb(buffer);
}
/**
 * @public
 */
export function verifyMessageCkbSecp256k1(message, signature, publicKey) {
    const signatureBytes = bytesFrom(signature);
    return secp256k1.verify(new secp256k1.Signature(numFrom(signatureBytes.slice(0, 32)), numFrom(signatureBytes.slice(32, 64))).addRecoveryBit(Number(numFrom(signatureBytes.slice(64, 65)))), bytesFrom(messageHashCkbSecp256k1(message)), bytesFrom(publicKey));
}