# frozen_string_literal: false #-- # = Ruby-space predefined Cipher subclasses # # = Info # 'OpenSSL for Ruby 2' project # Copyright (C) 2002 Michal Rokos # All rights reserved. # # = Licence # This program is licensed under the same licence as Ruby. # (See the file 'LICENCE'.) #++ 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.downcase) } } const_set(name, klass) } %w(128 192 256).each{|keylen| klass = Class.new(Cipher){ define_method(:initialize){|mode = "CBC"| super("aes-#{keylen}-#{mode}".downcase) } } const_set("AES#{keylen}", klass) } # call-seq: # cipher.random_key -> key # # Generate a random key with OpenSSL::Random.random_bytes and sets it to # the cipher, and returns it. # # You must call #encrypt or #decrypt before calling this method. def random_key str = OpenSSL::Random.random_bytes(self.key_len) self.key = str end # call-seq: # cipher.random_iv -> iv # # Generate a random IV with OpenSSL::Random.random_bytes and sets it to the # cipher, and returns it. # # You must call #encrypt or #decrypt before calling this method. def random_iv str = OpenSSL::Random.random_bytes(self.iv_len) self.iv = str end # Deprecated. # # This class is only provided for backwards compatibility. # Use OpenSSL::Cipher. class Cipher < Cipher; end deprecate_constant :Cipher end # Cipher end # OpenSSL