Contents

require 'aes'

module Devise
  module Encryptors
    # = AES
    # Uses the AES algorithm to encrypt passwords.
    class Aes256 < Base
      class << self
        # Returns a Base64 encrypted password where pepper is used for the key,
        # and the initialization_vector is randomly generated and prepended onto
        # encoded ciphertext
        def digest(password, stretches, salt, pepper)
          ::AES.encrypt(password, pepper, {:iv => salt})
        end
        alias :encrypt :digest
        # Returns a base64 encoded salt
        def salt(stretches)
          ::AES.iv(:base_64)
        end
        # Returns the plaintext password where pepper is used for the key,
        # and the initialization_vector is read from the Base64 encoded ciphertext
        def decrypt(encrypted_password, pepper)        
          ::AES.decrypt(encrypted_password, pepper)
        end
      end
    end
  end
end

Version data entries

2 entries across 2 versions & 1 rubygems

Version	Path
devise_aes_encryptable-0.2.3	lib/encryptors/aes256.rb
devise_aes_encryptable-0.2.2	lib/encryptors/aes256.rb