SHA3 for Ruby is a XKCP based native (C) binding to SHA3 (FIPS 202) cryptographic hashing algorithm.
- Please do NOT use SHA3 to hash passwords -- use a slow hashing function instead (e.g.:
- Version 1.0 introduces new API and is incompatible with previous versions (0.x).
SHA3::Digest: A standard Digest subclass. The interface, and operation of this class are parallel to digest classes bundled with MRI-based Rubies (e.g.: Digest::SHA2, and OpenSSL::Digest).
gem install sha3
Valid hash bit-lengths are: 224, 256, 384, 512.
:sha224 :sha256 :sha384 :sha512 # SHA3::Digest.new(224) is SHA3::Digest.new(:sha224)
Alternatively, you can instantiate using one of four sub-classes:
SHA3::Digest::SHA224.new() # 224 bits SHA3::Digest::SHA256.new() # 256 bits SHA3::Digest::SHA384.new() # 384 bits SHA3::Digest::SHA512.new() # 512 bits
# Instantiate a new SHA3::Digest class with 256 bit length s = SHA3::Digest.new(:sha256) # OR # s = SHA3::Digest::SHA256.new() # Update hash state, and compute new value s.update "Compute Me" # << is an .update() alias s << "Me too" # Returns digest value in bytes s.digest # => "\xBE\xDF\r\xD9\xA1..." # Returns digest value as hex string s.hexdigest # => "bedf0dd9a15b647..." ### Digest class-methods: ### SHA3::Digest.hexdigest(:sha224, "Hash me, please") # => "200e7bc18cd613..." SHA3::Digest::SHA384.digest("Hash me, please") # => "\xF5\xCEpC\xB0eV..."
Hashing a file
# Compute the hash value for given file, and return the result as hex s = SHA3::Digest::SHA224.file("my_fantastical_file.bin").hexdigest # Calling SHA3::Digest.file(...) defaults to SHA256 s = SHA3::Digest.file("tests.sh") # => #<SHA3::Digest: a9801db49389339...>
- Native build tools (e.g., Clang/LLVM, GCC, Minigw, etc.)
- Gems: rubygems-tasks, rake, rspec, yard
rake to run the included RSpec tests.
Only a small subset of test vectors are included in the source repository; however, the complete test vectors suite is available for download. Simply run the
tests.sh shell script (available in the root of source directory) to generate full byte-length RSpec test files.
Supported Ruby versions:
- MRI Ruby 2.6 - 3.1
XKCP by Keccak team: https://keccak.team/index.html
Copyright (c) 2012 - 2022 Johanns Gregorian (https://github.com/johanns)
See LICENSE.txt for details.