Module: DES

Defined in:
lib/des.rb

Defined Under Namespace

Classes: Block, Ctx

Constant Summary collapse

IP_L = 
[58, 50, 42, 34, 26, 18, 10, 2, 60, 52, 44, 36, 28, 20, 12, 4, 62, 54, 46, 38, 30, 22, 14, 6, 64, 56, 48, 40, 32, 24, 16, 8]
IP_R = 
[57, 49, 41, 33, 25, 17, 9, 1, 59, 51, 43, 35, 27, 19, 11, 3, 61, 53, 45, 37, 29, 21, 13, 5, 63, 55, 47, 39, 31, 23, 15, 7]
FP = 
[40, 8, 48, 16, 56, 24, 64, 32, 39, 7, 47, 15, 55, 23, 63, 31, 38, 6, 46, 14, 54, 22, 62, 30, 37, 5, 45, 13, 53, 21, 61, 29,
36, 4, 44, 12, 52, 20, 60, 28, 35, 3, 43, 11, 51, 19, 59, 27, 34, 2, 42, 10, 50, 18, 58, 26, 33, 1, 41, 9, 49, 17, 57, 25]

Class Method Summary collapse

Class Method Details

.decrypt(data_block, key) ⇒ Object

Parameters:



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# File 'lib/des.rb', line 106

def self.decrypt(data_block, key)
  key_block = DES::Block.new(key)
  DES::Ctx.new(data_block, key_block).decrypt
end

.encrypt(data, key) ⇒ Object

Parameters:



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# File 'lib/des.rb', line 97

def self.encrypt(data, key)
  data_block = DES::Block.new(data)
  key_block = DES::Block.new(key)

  DES::Ctx.new(data_block, key_block).encrypt
end