//
// all have the same effect.
//
// Hashes are intended to be collision-resistant, even for situations
// where an adversary controls the byte sequences being hashed.
//
// A Hash is not safe for concurrent use by multiple goroutines, but a Seed is.
// If multiple goroutines must compute the same seeded hash,
// each can declare its own Hash and call SetSeed with a common Seed.
type Hash struct {
	_     [0]func()     // not comparable

	// Only small messages can be signed directly; thus the hash of a
	// message, rather than the message itself, is signed. This requires
	// that the hash function be collision resistant. SHA-256 is the
	// least-strong hash function that should be used for this at the time
	// of writing (2016).
	hashed := sha256.Sum256(message)

	signature, err := rsa.SignPKCS1v15(nil, rsaPrivateKey, crypto.SHA256, hashed[:])
	if err != nil {

        expect:
        hasher.getClassLoaderHash(runtimeLoader) == hashFor("system")
    }

    def "hashes unknown classloader"() {
        def unknownLoader = Mock(ClassLoader)
        expect:
        hasher.getClassLoaderHash(unknownLoader) == null
    }

    def "hashes hashed classloader"() {
        def hashedLoader = new DelegatingLoader(runtimeLoader)
        def hashedLoaderHash = TestHashCodes.hashCodeFrom(123456)

	b.Run("2048", func(b *testing.B) {
		hashed := sha256.Sum256([]byte("testing"))
		s, err := SignPKCS1v15(rand.Reader, test2048Key, crypto.SHA256, hashed[:])
		if err != nil {
			b.Fatal(err)
		}

		b.ResetTimer()
		for i := 0; i < b.N; i++ {
			err := VerifyPKCS1v15(&test2048Key.PublicKey, crypto.SHA256, hashed[:], s)
			if err != nil {
				b.Fatal(err)
			}
		}
	})
}

}

// Hash64 returns the i-th short hashed symbol's hash.
// Note: here i is the index of short hashed symbols, not all symbols
// (unlike other accessors).
func (r *Reader) Hash64(i uint32) uint64 {
	off := r.h.Offsets[BlkHash64] + uint32(i*Hash64Size)
	return r.uint64At(off)
}

// Hash returns a pointer to the i-th hashed symbol's hash.

        this.delegate = delegate;
    }

    @Override
    public void appendConfigurationToHasher(Hasher hasher) {
        delegate.appendConfigurationToHasher(hasher);
        hasher.putString(this.getClass().getName());
    }

    @Nullable
    @Override
    public HashCode hash(RegularFileSnapshotContext snapshotContext) throws IOException {
        return Optional.of(snapshotContext)

	SaltLength int

	// Hash is the hash function used to generate the message digest. If not
	// zero, it overrides the hash function passed to SignPSS. It's required
	// when using PrivateKey.Sign.
	Hash crypto.Hash
}

// HashFunc returns opts.Hash so that [PSSOptions] implements [crypto.SignerOpts].
func (opts *PSSOptions) HashFunc() crypto.Hash {
	return opts.Hash
}

 */
@Beta
@ElementTypesAreNonnullByDefault
public interface Hasher extends PrimitiveSink {
  @CanIgnoreReturnValue
  @Override
  Hasher putByte(byte b);

  @CanIgnoreReturnValue
  @Override
  Hasher putBytes(byte[] bytes);

  @CanIgnoreReturnValue
  @Override
  Hasher putBytes(byte[] bytes, int off, int len);

  @CanIgnoreReturnValue
  @Override
  Hasher putBytes(ByteBuffer bytes);

  @CanIgnoreReturnValue

// panic if len(publicKey) is not [PublicKeySize].
//
// If opts.Hash is [crypto.SHA512], the pre-hashed variant Ed25519ph is used and
// message is expected to be a SHA-512 hash, otherwise opts.Hash must be
// [crypto.Hash](0) and the message must not be hashed, as Ed25519 performs two
// passes over messages to be signed.
//

            proxy_set_header X-Forwarded-Proto $scheme;
            proxy_set_header X-NginX-Proxy true;

            # This is necessary to pass the correct IP to be hashed
            real_ip_header X-Real-IP;

            proxy_connect_timeout 300;
            
            # To support websocket
            proxy_http_version 1.1;
            proxy_set_header Upgrade $http_upgrade;