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Edit File : cipher.rb \| Size : 1.58 KB
#-- # # $RCSfile$ # # = Ruby-space predefined Cipher subclasses # # = Info # 'OpenSSL for Ruby 2' project # Copyright (C) 2002 Michal Rokos <m.rokos@sh.cvut.cz> # All rights reserved. # # = Licence # This program is licenced under the same licence as Ruby. # (See the file 'LICENCE'.) # # = Version # $Id: cipher.rb 36895 2012-09-04 00:57:31Z nobu $ # #++ module OpenSSL class Cipher %w(AES CAST5 BF DES IDEA RC2 RC4 RC5).each{\|name\| klass = Class.new(Cipher){ define_method(:initialize){\|*args\| cipher_name = args.inject(name){\|n, arg\| "#{n}-#{arg}" } super(cipher_name) } } const_set(name, klass) } %w(128 192 256).each{\|keylen\| klass = Class.new(Cipher){ define_method(:initialize){\|mode\| mode \|\|= "CBC" cipher_name = "AES-#{keylen}-#{mode}" super(cipher_name) } } const_set("AES#{keylen}", klass) } # Generate, set, and return a random key. # You must call cipher.encrypt or cipher.decrypt before calling this method. def random_key str = OpenSSL::Random.random_bytes(self.key_len) self.key = str return str end # Generate, set, and return a random iv. # You must call cipher.encrypt or cipher.decrypt before calling this method. def random_iv str = OpenSSL::Random.random_bytes(self.iv_len) self.iv = str return str end # This class is only provided for backwards compatibility. Use OpenSSL::Cipher in the future. class Cipher < Cipher # add warning end end # Cipher end # OpenSSL Back

Edit File : cipher.rb | Size : 1.58 KB

#--
#
# $RCSfile$
#
# = Ruby-space predefined Cipher subclasses
#
# = Info
# 'OpenSSL for Ruby 2' project
# Copyright (C) 2002  Michal Rokos <m.rokos@sh.cvut.cz>
# All rights reserved.
#
# = Licence
# This program is licenced under the same licence as Ruby.
# (See the file 'LICENCE'.)
#
# = Version
# $Id: cipher.rb 36895 2012-09-04 00:57:31Z nobu $
#
#++

module OpenSSL
  class Cipher
    %w(AES CAST5 BF DES IDEA RC2 RC4 RC5).each{|name|
      klass = Class.new(Cipher){
        define_method(:initialize){|*args|
          cipher_name = args.inject(name){|n, arg| "#{n}-#{arg}" }
          super(cipher_name)
        }
      }
      const_set(name, klass)
    }

%w(128 192 256).each{|keylen|
      klass = Class.new(Cipher){
        define_method(:initialize){|mode|
          mode ||= "CBC"
          cipher_name = "AES-#{keylen}-#{mode}"
          super(cipher_name)
        }
      }
      const_set("AES#{keylen}", klass)
    }

# Generate, set, and return a random key.
    # You must call cipher.encrypt or cipher.decrypt before calling this method.
    def random_key
      str = OpenSSL::Random.random_bytes(self.key_len)
      self.key = str
      return str
    end

# Generate, set, and return a random iv.
    # You must call cipher.encrypt or cipher.decrypt before calling this method.
    def random_iv
      str = OpenSSL::Random.random_bytes(self.iv_len)
      self.iv = str
      return str
    end

# This class is only provided for backwards compatibility.  Use OpenSSL::Cipher in the future.
    class Cipher < Cipher
      # add warning
    end
  end # Cipher
end # OpenSSL

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