https://github.com/quadule/digest-cmac

A Ruby implementation of the CMAC digest algorithm, based on RFC 4493
https://github.com/quadule/digest-cmac

Last synced: 10 months ago
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A Ruby implementation of the CMAC digest algorithm, based on RFC 4493

• Host: GitHub
• URL: https://github.com/quadule/digest-cmac
• Owner: quadule
• Created: 2009-04-19T20:37:39.000Z (about 17 years ago)
• Default Branch: master
• Last Pushed: 2011-10-11T21:32:22.000Z (over 14 years ago)
• Last Synced: 2025-03-30T17:11:46.540Z (about 1 year ago)
• Language: Ruby
• Homepage:
• Size: 92.8 KB
• Stars: 5
• Watchers: 2
• Forks: 2
• Open Issues: 0
• Metadata Files:
  • Readme: README

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README

          
A Ruby implementation of the CMAC / OMAC1 digest algorithm, based on RFC 4493:

http://tools.ietf.org/html/rfc4493

Here's an example using a test vector from the RFC:

# key is 128 bits

key = ["2b7e151628aed2a6abf7158809cf4f3c"].pack('H*')

cmac = Digest::CMAC.new(OpenSSL::Cipher::Cipher.new('aes-128-cbc'), key)

cmac.update(["6bc1bee22e409f96e93d7e117393172a"].pack('H*'))

digest = cmac.digest

# unpack it into hex

digest.unpack('H*')[0] # => '070a16b46b4d4144f79bdd9dd04a287c'