Function xor

src/cmap/auth/scram.ts:259–268

(a: Uint8Array, b: Uint8Array)

// XOR two buffers
function xor(a: Uint8Array, b: Uint8Array) {
  const length = Math.max(a.length, b.length);
  const res = [];

  for (let i = 0; i < length; i += 1) {
    res.push(a[i] ^ b[i]);
  }

  return ByteUtils.toBase64(ByteUtils.fromNumberArray(res));
}

async function H(method: CryptoMethod, text: Uint8Array): Promise<Uint8Array> {
  const buffer = await crypto.subtle.digest(method === 'sha256' ? 'SHA-256' : 'SHA-1', text);