FastHashes

FashHashes is a suite of .NET non-cryptographic hash functions.

Status:
Info:
NuGet:
Donation:

Main Features

• High Performing: deeply-optimized code makes extensive use of method inlining and unsafe memory pointers in order to speed up the computations.
• Allocation Free: all the internal functions follow a zero-allocation approach, only primitive types and/or arrays of primitive types are used by the algorithms.
• Endian-Agnostic: all the hashes provide consistent results regardless of the machine byte order, while only moderately affecting the overall performance of the computations.
• Platform-Agnostic: the code has been developed under .NET Standard framework and both x86 and x64 environments are fully supported.
• Fully Managed: since version 3.0.0, pointers requiring unsafe memory access contexts have been completely removed and the library is now fully managed.

Hashes

The library includes the following non-cryptographic hashes:

• FarmHash
  • 32/64/128 Bits Output
  • Fingerprint Versions
  • Reference Implementation: https://github.com/google/farmhash
• FastHash
  • 32/64 Bits Output
  • Reference Implementation: https://github.com/ZilongTan/fast-hash
• FastPositiveHash / TH1A
  • 64 Bits Output
  • 0/1/2 Variants
  • Reference Implementation: https://github.com/leo-yuriev/t1ha
• HalfSipHash
  • 32 Bits Output
  • Reference Implementation: https://github.com/veorq/SipHash
• HighwayHash
  • 64/128/256 Bits Output
  • Reference Implementation: https://github.com/google/highwayhash
• KomiHash
  • 64 Bits Output
  • Reference Implementation: https://github.com/avaneev/komihash
• MetroHash
  • 64/128 Bits Output
  • 0/1 Variants
  • Reference Implementation: https://github.com/jandrewrogers/MetroHash
• MirHash
  • 64 Bits Output
  • Reference Implementation: https://github.com/vnmakarov/mir
• MumHash
  • 64 Bits Output
  • Reference Implementation: https://github.com/vnmakarov/mum-hash
• MurmurHash
  • 32/64/128 Bits Output
  • x86/x64 Variants
  • Reference Implementation: https://github.com/aappleby/smhasher
• Mx3Hash
  • 64 Bits Output
  • Reference Implementation: https://github.com/jonmaiga/mx3
• PengyHash
  • 64 Bits Output
  • Strict Variant
  • Reference Implementation: https://github.com/tinypeng/pengyhash
• SipHash
  • 64 Bits Output
  • 1-3/2-4 Variants
  • Reference Implementation: https://github.com/veorq/SipHash
• SpookyHash
  • 32/64/128 Bits Output
  • Reference Implementation: http://burtleburtle.net/bob/hash/spooky.html
• WyHash
  • 32/64 Bits Output
  • Strict Variant
  • Reference Implementation: https://github.com/wangyi-fudan/wyhash
• xxHash
  • 32/64 Bits Output
  • Reference Implementation: https://github.com/Cyan4973/xxHash

Requirements

The following Frameworks are supported:

• Library: .NET Standard 2.0, .NET Standard 2.1
• Auxiliary Projects: .NET Core 2.1, .NET Core 3.1, .NET 5.0, .NET 6.0

The following NuGet packages are required for performing unit tests:

• Microsoft.NET.Test.Sdk
• xunit

Performance Benchmarks

The tests above have been conducted with the following machine setup:

• CPU: Intel Core i7-7700HQ @2.80GHz (4 Cores, 8 Threads, 256KB L1 Cache)
• RAM: 16 GB x DDR4 SO-DIMM @1200MHz
• OS: Microsoft Windows 10 64-Bit