INNER CODE UNIT · JavaScript

hexToArrayBuffer

codedogQBY/ReadAny · packages/app-expo/index.js:23

function hexToArrayBuffer(hex) {
  const normalized = hex.trim();
  const bytes = new Uint8Array(normalized.length / 2);
  for (let i = 0; i < normalized.length; i += 2) {
    bytes[i / 2] = Number.parseInt(normalized.slice(i, i + 2), 16);
  }
  return bytes.buffer;
}

function resolveDigestAlgorithm(algorithm) {
  const name = typeof algorithm === "string" ? algorithm : algorithm?.name;
  switch ((name || "").toUpperCase()) {
    case "SHA-1":
      return ExpoCrypto.CryptoDigestAlgorithm.SHA1;
    case "SHA-256":
      return ExpoCrypto.CryptoDigestAlgorithm.SHA256;
    default:
      throw new Error(`Unsupported digest algorithm: ${String(name || algorithm)}`);

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