MurmurHash is a algorithm desiged by Austin Appleby.
This library have some classes for MurmurHash algorithm.
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Digest::MurmurHash1 use algorithm MurmurHash1(32-bit).
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Digest::MurmurHash2 use algorithm MurmurHash2(32-bit).
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Digest::MurmurHash2A use algorithm MurmurHash2A(32-bit).
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Digest::MurmurHash64A use algorithm MurmurHash64A(64-bit).
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Digest::MurmurHash64B use algorithm MurmurHash64B(64-bit).
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Digest::MurmurHashNeutral2 use algorithm MurmurHashNeutral2(32-bit).
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Digest::MurmurHashAligned2 use algorithm MurmurHashAligned2(32-bit).
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Digest::MurmurHash3_x86_32 use algorithm MurmurHash3 for 32-bit platform (32-bit).
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Digest::MurmurHash3_x86_128 use algorithm MurmurHash3 for 32-bit platform (128-bit).
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Digest::MurmurHash3_x64_128 use algorithm MurmurHash3 for 64-bit platform (128-bit).
(Digest::MurmurHash class was nothing)
All classes compliance Digest API of Ruby.
require 'digest/murmurhash' # MurmurHash1 can use like same than Digest::XXX. p Digest::MurmurHash1.hexdigest('murmurhash') #=> d5ab09c7 p Digest::MurmurHash1.digest('murmurhash') #=> \xD5\xAB\x09\xC7 p Digest::MurmurHash1.file("./LICENSE.txt").hexdigest #=> "41962e71" # Original method for performance p Digest::MurmurHash1.rawdigest('murmurhash') #=> 3339299797- Very fast because hash algorithm is written by C extention
- You can try all Hurmurhash algorithms
- You can use same interface built-in Digest::{MD5,SH1,...} classes because each class inherited Digest::Class.
call Digest::XXX.digest (see also spec/bench.rb)
$ bundle exec ruby spec/bench.rb ### condition RUBY_VERSION = 2.6.5 count = 1000 data size = 100 KB ### benchmark MurmurHash1 0.04397099930793047 MurmurHash2 0.030599999241530895 MurmurHash2A 0.03052499983459711 MurmurHash64A 0.014573999680578709 MurmurHash64B 0.027068999595940113 MurmurHashNeutral2 0.028548000380396843 MurmurHashAligned2 0.03340199962258339 MurmurHash3_x86_32 0.08531500026583672 MurmurHash3_x86_128 0.10534099955111742 MurmurHash3_x64_128 0.05008100066334009 Digest::MD5 0.1293069999665022 Digest::SHA1 0.10616999957710505 Digest::SHA256 0.23746399953961372 Digest::SHA2 0.23401100002229214 OpenSSL::HMAC(sha256) 0.23477800004184246 Base64 0.1534709995612502 Zlib.crc32 0.008456000126898289 
Add this line to your application's Gemfile:
gem 'digest-murmurhash' And then execute:
$ bundle Or install it yourself as:
$ gem install digest-murmurhash See the file LICENSE.txt.
