@toruslabs/metadata-helpers/dist/lib.esm/helpers/utils.js

Helper methods for metadata

export { invert, mod } from '@noble/curves/abstract/modular.js';
import { secp256k1 } from '@noble/curves/secp256k1.js';
export { secp256k1 } from '@noble/curves/secp256k1.js';
export { bytesToHex, bytesToNumberBE, bytesToNumberLE, numberToBytesBE, numberToHexUnpadded } from '@noble/curves/utils.js';
export { sha512 } from '@noble/hashes/sha2.js';
export { keccak_256 } from '@noble/hashes/sha3.js';

function toEthereumSignature(recoveredSig) {
  const ethSig = new Uint8Array(65);
  ethSig.set(recoveredSig.slice(1, 65), 0); // r + s
  ethSig[64] = recoveredSig[0]; // v at end
  return ethSig;
}
function getPublicKeyCoords(privateKeyBytes) {
  const pubKeyUncompressed = secp256k1.getPublicKey(privateKeyBytes, false);
  const x = pubKeyUncompressed.slice(1, 33);
  const y = pubKeyUncompressed.slice(33, 65);
  return {
    x,
    y
  };
}
function coordsToPublicKey(x, y) {
  const pubKey = new Uint8Array(65);
  pubKey[0] = 0x04; // uncompressed prefix
  pubKey.set(x, 1);
  pubKey.set(y, 33);
  return pubKey;
}

export { coordsToPublicKey, getPublicKeyCoords, toEthereumSignature };