# frozen_string_literal: false

[0] Fix | Delete

#--

[1] Fix | Delete

# = Ruby-space predefined Cipher subclasses

[2] Fix | Delete

#

[3] Fix | Delete

# = Info

[4] Fix | Delete

# 'OpenSSL for Ruby 2' project

[5] Fix | Delete

# Copyright (C) 2002 Michal Rokos <m.rokos@sh.cvut.cz>

[6] Fix | Delete

# All rights reserved.

[7] Fix | Delete

#

[8] Fix | Delete

# = Licence

[9] Fix | Delete

# This program is licensed under the same licence as Ruby.

[10] Fix | Delete

# (See the file 'LICENCE'.)

[11] Fix | Delete

#++

[12] Fix | Delete

[13] Fix | Delete

module OpenSSL

[14] Fix | Delete

class Cipher

[15] Fix | Delete

%w(AES CAST5 BF DES IDEA RC2 RC4 RC5).each{|name|

[16] Fix | Delete

klass = Class.new(Cipher){

[17] Fix | Delete

define_method(:initialize){|*args|

[18] Fix | Delete

cipher_name = args.inject(name){|n, arg| "#{n}-#{arg}" }

[19] Fix | Delete

super(cipher_name.downcase)

[20] Fix | Delete

}

[21] Fix | Delete

}

[22] Fix | Delete

const_set(name, klass)

[23] Fix | Delete

}

[24] Fix | Delete

[25] Fix | Delete

%w(128 192 256).each{|keylen|

[26] Fix | Delete

klass = Class.new(Cipher){

[27] Fix | Delete

define_method(:initialize){|mode = "CBC"|

[28] Fix | Delete

super("aes-#{keylen}-#{mode}".downcase)

[29] Fix | Delete

}

[30] Fix | Delete

}

[31] Fix | Delete

const_set("AES#{keylen}", klass)

[32] Fix | Delete

}

[33] Fix | Delete

[34] Fix | Delete

# call-seq:

[35] Fix | Delete

# cipher.random_key -> key

[36] Fix | Delete

#

[37] Fix | Delete

# Generate a random key with OpenSSL::Random.random_bytes and sets it to

[38] Fix | Delete

# the cipher, and returns it.

[39] Fix | Delete

#

[40] Fix | Delete

# You must call #encrypt or #decrypt before calling this method.

[41] Fix | Delete

def random_key

[42] Fix | Delete

str = OpenSSL::Random.random_bytes(self.key_len)

[43] Fix | Delete

self.key = str

[44] Fix | Delete

end

[45] Fix | Delete

[46] Fix | Delete

# call-seq:

[47] Fix | Delete

# cipher.random_iv -> iv

[48] Fix | Delete

#

[49] Fix | Delete

# Generate a random IV with OpenSSL::Random.random_bytes and sets it to the

[50] Fix | Delete

# cipher, and returns it.

[51] Fix | Delete

#

[52] Fix | Delete

# You must call #encrypt or #decrypt before calling this method.

[53] Fix | Delete

def random_iv

[54] Fix | Delete

str = OpenSSL::Random.random_bytes(self.iv_len)

[55] Fix | Delete

self.iv = str

[56] Fix | Delete

end

[57] Fix | Delete

[58] Fix | Delete

# Deprecated.

[59] Fix | Delete

#

[60] Fix | Delete

# This class is only provided for backwards compatibility.

[61] Fix | Delete

# Use OpenSSL::Cipher.

[62] Fix | Delete

class Cipher < Cipher; end

[63] Fix | Delete

deprecate_constant :Cipher

[64] Fix | Delete

end # Cipher

[65] Fix | Delete

end # OpenSSL

[66] Fix | Delete

[67] Fix | Delete