@CheckReturnValue @ParametersAreNonnullByDefault

Package com.google.common.hash

Hash functions and related structures.

See: Description

Interface Summary

Interface	Description
BloomFilter.Strategy	A strategy to translate T instances, to numHashFunctions bit indexes.
Funnel<T>	An object which can send data from an object of type T into a PrimitiveSink.
Hasher	A PrimitiveSink that can compute a hash code after reading the input.
HashFunction	A hash function is a collision-averse pure function that maps an arbitrary block of data to a number called a hash code.
LittleEndianByteArray.LittleEndianBytes	Common interface for retrieving a 64-bit long from a little-endian byte array.
PrimitiveSink	An object which can receive a stream of primitive values.

Class Summary

Class	Description
AbstractByteHasher	Abstract Hasher that handles converting primitives to bytes using a scratch ByteBuffer and streams all bytes to a sink to compute the hash.
AbstractCompositeHashFunction	An abstract composition of multiple hash functions.
AbstractHasher	An abstract hasher, implementing AbstractHasher.putBoolean(boolean), AbstractHasher.putDouble(double), AbstractHasher.putFloat(float), AbstractHasher.putUnencodedChars(CharSequence), and AbstractHasher.putString(CharSequence, Charset) as prescribed by Hasher.
AbstractNonStreamingHashFunction	Skeleton implementation of HashFunction, appropriate for non-streaming algorithms.
AbstractNonStreamingHashFunction.ExposedByteArrayOutputStream
AbstractStreamingHashFunction	Skeleton implementation of HashFunction.
AbstractStreamingHashFunction.AbstractStreamingHasher	A convenience base class for implementors of Hasher; handles accumulating data until an entire "chunk" (of implementation-dependent length) is ready to be hashed.
BloomFilter<T>	A Bloom filter for instances of T.
BloomFilter.SerialForm<T>
BloomFilterStrategies.BitArray
ChecksumHashFunction	HashFunction adapter for Checksum instances.
Crc32cHashFunction	This class generates a CRC32C checksum, defined by RFC 3720, Section 12.1.
Crc32cHashFunction.Crc32cHasher
FarmHashFingerprint64	Implementation of FarmHash Fingerprint64, an open-source fingerprinting algorithm for strings.
Funnels	Funnels for common types.
Funnels.SequentialFunnel<E>
Funnels.SinkAsStream
Funnels.StringCharsetFunnel
Funnels.StringCharsetFunnel.SerializedForm
HashCode	An immutable hash code of arbitrary bit length.
HashCode.BytesHashCode
HashCode.IntHashCode
HashCode.LongHashCode
Hashing	Static methods to obtain HashFunction instances, and other static hashing-related utilities.
Hashing.Adler32Holder
Hashing.ConcatenatedHashFunction
Hashing.Crc32cHolder
Hashing.Crc32Holder
Hashing.FarmHashFingerprint64Holder
Hashing.LinearCongruentialGenerator	Linear CongruentialGenerator to use for consistent hashing.
Hashing.Md5Holder
Hashing.Murmur3_128Holder
Hashing.Murmur3_32Holder
Hashing.Sha1Holder
Hashing.Sha256Holder
Hashing.Sha384Holder
Hashing.Sha512Holder
Hashing.SipHash24Holder
HashingInputStream	An InputStream that maintains a hash of the data read from it.
HashingOutputStream	An OutputStream that maintains a hash of the data written to it.
LittleEndianByteArray	Utility functions for loading and storing values from a byte array.
MacHashFunction	HashFunction adapter for Mac instances.
MacHashFunction.MacHasher	Hasher that updates a Mac (message authentication code).
MessageDigestHashFunction	HashFunction adapter for MessageDigest instances.
MessageDigestHashFunction.MessageDigestHasher	Hasher that updates a message digest.
MessageDigestHashFunction.SerializedForm
Murmur3_128HashFunction	See MurmurHash3_x64_128 in the C++ implementation.
Murmur3_128HashFunction.Murmur3_128Hasher
Murmur3_32HashFunction	See MurmurHash3_x86_32 in the C++ implementation.
Murmur3_32HashFunction.Murmur3_32Hasher
SipHashFunction	HashFunction implementation of SipHash-c-d.
SipHashFunction.SipHasher

Enum Summary

Enum	Description
BloomFilterStrategies	Collections of strategies of generating the k * log(M) bits required for an element to be mapped to a BloomFilter of M bits and k hash functions.
Funnels.ByteArrayFunnel
Funnels.IntegerFunnel
Funnels.LongFunnel
Funnels.UnencodedCharsFunnel
Hashing.ChecksumType
LittleEndianByteArray.JavaLittleEndianBytes	Fallback implementation for when Unsafe is not available in our current environment.
LittleEndianByteArray.UnsafeByteArray	The only reference to Unsafe is in this nested class.

Package com.google.common.hash Description

Hash functions and related structures.

See the Guava User Guide article on hashing.