opstack-kit-chains/_esm/accounts/utils/sign.js

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// TODO(v3): Convert to sync.
import { secp256k1 } from '@noble/curves/secp256k1';
import { numberToHex } from '../../utils/encoding/toHex.js';
/**
 * @description Signs a hash with a given private key.
 *
 * @param hash The hash to sign.
 * @param privateKey The private key to sign with.
 *
 * @returns The signature.
 */
export async function sign({ hash, privateKey, }) {
    const { r, s, recovery } = secp256k1.sign(hash.slice(2), privateKey.slice(2));
    return {
        r: numberToHex(r, { size: 32 }),
        s: numberToHex(s, { size: 32 }),
        v: recovery ? 28n : 27n,
        yParity: recovery,
    };
}
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