Function asyncDigest

lib/internal/crypto/hash.js:212–289

(algorithm, data)

// Implementation for WebCrypto subtle.digest()

function asyncDigest(algorithm, data) {
  validateMaxBufferLength(data, 'data');

  switch (algorithm.name) {
    case 'SHA-1':
      // Fall through
    case 'SHA-256':
      // Fall through
    case 'SHA-384':
      // Fall through
    case 'SHA-512':
      // Fall through
    case 'SHA3-256':
      // Fall through
    case 'SHA3-384':
      // Fall through
    case 'SHA3-512':
      return jobPromise(() => new HashJob(
        kCryptoJobWebCrypto,
        normalizeHashName(algorithm.name),
        data));
    case 'cSHAKE128':
      // Fall through
    case 'cSHAKE256': {
      const outputLength = algorithm.outputLength;
      if (algorithm.functionName?.byteLength ||
          algorithm.customization?.byteLength) {
        if (CShakeJob === undefined) {
          throw lazyDOMException(
            'Non-empty CShakeParams functionName or customization is not supported',
            'NotSupportedError');
        }

        return jobPromise(() => new CShakeJob(
          kCryptoJobWebCrypto,
          algorithm.name,
          data,
          algorithm.functionName,
          algorithm.customization,
          outputLength));
      }

      const bits = jobPromise(() => new HashJob(
        kCryptoJobWebCrypto,
        normalizeHashName(algorithm.name),
        data,
        numBitsToBytes(outputLength) * 8));
      if (outputLength % 8 === 0)
        return bits;
      return jobPromiseThen(bits, (bits) =>
        TypedArrayPrototypeGetBuffer(truncateToBitLength(outputLength, bits)));
    }
    case 'TurboSHAKE128':
      // Fall through
    case 'TurboSHAKE256':
      return jobPromise(() => new TurboShakeJob(
        kCryptoJobWebCrypto,
        algorithm.name,