openssl-cmac

Ruby Gem for

• RFC 4493 - The AES-CMAC Algorithm
• RFC 4494 - The AES-CMAC-96 Algorithm and Its Use with IPsec
• RFC 4615 - The Advanced Encryption Standard-Cipher-based Message Authentication Code-Pseudo-Random Function-128 (AES-CMAC-PRF-128) Algorithm for the Internet Key Exchange Protocol (IKE)

Installation

Add this line to your application's Gemfile:

gem 'openssl-cmac'

And then execute:

$ bundle

Or install it yourself as:

$ gem install openssl-cmac

Usage

Example 1:

require 'openssl/cmac'
mac = OpenSSL::CMAC.digest('AES', 'message', 'key')

Example 2:

require 'openssl/cmac'
cmac = OpenSSL::CMAC.new('AES', 'key')
cmac.update('message chunk 1')
...
cmac.update('message chunk n')
mac = cmac.digest