*
   * @param x the value
   * @param hc the hash code holder
   * @param wasUncontended false if CAS failed before call
   */
  final void retryUpdate(long x, @CheckForNull int[] hc, boolean wasUncontended) {
    int h;
    if (hc == null) {
      threadHashCode.set(hc = new int[1]); // Initialize randomly
      int r = rng.nextInt(); // Avoid zero to allow xorShift rehash
      h = hc[0] = (r == 0) ? 1 : r;

   *
   * @param x the value
   * @param hc the hash code holder
   * @param wasUncontended false if CAS failed before call
   */
  final void retryUpdate(long x, @CheckForNull int[] hc, boolean wasUncontended) {
    int h;
    if (hc == null) {
      threadHashCode.set(hc = new int[1]); // Initialize randomly
      int r = rng.nextInt(); // Avoid zero to allow xorShift rehash
      h = hc[0] = (r == 0) ? 1 : r;

   *
   * @param x the value
   * @param hc the hash code holder
   * @param wasUncontended false if CAS failed before call
   */
  final void retryUpdate(long x, @CheckForNull int[] hc, boolean wasUncontended) {
    int h;
    if (hc == null) {
      threadHashCode.set(hc = new int[1]); // Initialize randomly
      int r = rng.nextInt(); // Avoid zero to allow xorShift rehash
      h = hc[0] = (r == 0) ? 1 : r;

   *
   * @param x the value
   * @param hc the hash code holder
   * @param wasUncontended false if CAS failed before call
   */
  final void retryUpdate(long x, @CheckForNull int[] hc, boolean wasUncontended) {
    int h;
    if (hc == null) {
      threadHashCode.set(hc = new int[1]); // Initialize randomly
      int r = rng.nextInt(); // Avoid zero to allow xorShift rehash
      h = hc[0] = (r == 0) ? 1 : r;

  }

  /**
   * Implemented by the user to return a hash code for {@code t}, subject to the requirements
   * specified in {@link #hash}.
   *
   * <p>This method should not be called except by {@link #hash}. When {@link #hash} calls this
   * method, {@code t} is guaranteed to be non-null.
   *
   * @since 10.0 (previously, subclasses would override hash())
   */
  @ForOverride

        hasher.putString("SIGNATURE");
        hasher.putString(thing);
        return hasher.hash();
    }

    /**
     * Hash the given bytes with the default hash function.
     */
    public static HashCode hashBytes(byte[] bytes) {
        return DEFAULT.hashBytes(bytes);
    }

    /**
     * Hash the given string with the default hash function.
     */
    public static HashCode hashString(CharSequence string) {

  }

  /**
   * Implemented by the user to return a hash code for {@code t}, subject to the requirements
   * specified in {@link #hash}.
   *
   * <p>This method should not be called except by {@link #hash}. When {@link #hash} calls this
   * method, {@code t} is guaranteed to be non-null.
   *
   * @since 10.0 (previously, subclasses would override hash())
   */
  @ForOverride

}

const hashRandomBytes = goarch.PtrSize / 4 * 64

// used in asm_{386,amd64,arm64}.s to seed the hash function
var aeskeysched [hashRandomBytes]byte

// used in hash{32,64}.go to seed the hash function
var hashkey [4]uintptr

func alginit() {
	// Install AES hash algorithms if the instructions needed are present.
	if (GOARCH == "386" || GOARCH == "amd64") &&
		cpu.X86.HasAES && // AESENC

	chHash := hs.transcript.Sum(nil)
	hs.transcript.Reset()
	hs.transcript.Write([]byte{typeMessageHash, 0, 0, uint8(len(chHash))})
	hs.transcript.Write(chHash)
	if err := transcriptMsg(hs.serverHello, hs.transcript); err != nil {
		return err
	}

	var isInnerHello bool
	hello := hs.hello
	if hs.echContext != nil {
		chHash = hs.echContext.innerTranscript.Sum(nil)

	// This is not gRPC error. The operation must have failed before gRPC
	// method was called, otherwise we would get gRPC error.
	return "unknown-non-grpc"
}

func getHash(data string) string {
	if len(data) == 0 {
		return ""
	}
	h := hashPool.Get().(hash.Hash)
	h.Reset()
	h.Write([]byte(data))
	dataHash := fmt.Sprintf("sha256:%x", h.Sum(nil))
	hashPool.Put(h)
	return dataHash
}