@libp2p/crypto/dist/src/keys/secp256k1/index.js

Crypto primitives for libp2p

import crypto from 'node:crypto';
import { secp256k1 as secp } from '@noble/curves/secp256k1';
import { SigningError, VerificationError } from '../../errors.js';
const PUBLIC_KEY_BYTE_LENGTH = 33;
const PRIVATE_KEY_BYTE_LENGTH = 32;
export { PUBLIC_KEY_BYTE_LENGTH as publicKeyLength };
export { PRIVATE_KEY_BYTE_LENGTH as privateKeyLength };
/**
 * Hash and sign message with private key
 */
export function hashAndSign(key, msg, options) {
    options?.signal?.throwIfAborted();
    const hash = crypto.createHash('sha256');
    if (msg instanceof Uint8Array) {
        hash.update(msg);
    }
    else {
        for (const buf of msg) {
            hash.update(buf);
        }
    }
    const digest = hash.digest();
    try {
        const signature = secp.sign(digest, key);
        return signature.toDERRawBytes();
    }
    catch (err) {
        throw new SigningError(String(err));
    }
}
/**
 * Hash message and verify signature with public key
 */
export function hashAndVerify(key, sig, msg, options) {
    options?.signal?.throwIfAborted();
    const hash = crypto.createHash('sha256');
    if (msg instanceof Uint8Array) {
        hash.update(msg);
    }
    else {
        for (const buf of msg) {
            hash.update(buf);
        }
    }
    const digest = hash.digest();
    try {
        return secp.verify(sig, digest, key);
    }
    catch (err) {
        throw new VerificationError(String(err));
    }
}
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