<reponame>georgevangelou/des_encrypter_decrypter
################# CIPHER TABLES #################


IP = [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,
      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
      ]

IP_inv = [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
          ]

E = [32,1,2,3,4,5,
     4,5,6,7,8,9,
     8,9,10,11,12,13,
     12,13,14,15,16,17,
     16,17,18,19,20,21,
     20,21,22,23,24,25,
     24,25,26,27,28,29,
     28,29,30,31,32,1
     ]

S = [[
        [14,4,13,1,2,15,11,8,3,10,6,12,5,9,0,7], 
        [0,15,7,4,14,2,13,1,10,6,12,11,9,5,3,8], 
        [4,1,14,8,13,6,2,11,15,12,9,7,3,10,5,0], 
        [15,12,8,2,4,9,1,7,5,11,3,14,10,0,6,13] 
    ], 
    [ 
        [15,1,8,14,6,11,3,4,9,7,2,13,12,0,5,10], 
        [3,13,4,7,15,2,8,14,12,0,1,10,6,9,11,5], 
        [0,14,7,11,10,4,13,1,5,8,12,6,9,3,2,15], 
        [13,8,10,1,3,15,4,2,11,6,7,12,0,5,14,9] 
    ], 
    [ 
        [10,0,9,14,6,3,15,5,1,13,12,7,11,4,2,8], 
        [13,7,0,9,3,4,6,10,2,8,5,14,12,11,15,1], 
        [13,6,4,9,8,15,3,0,11,1,2,12,5,10,14,7], 
        [1,10,13,0,6,9,8,7,4,15,14,3,11,5,2,12] 
    ], 
    [ 
        [7,13,14,3,0,6,9,10,1,2,8,5,11,12,4,15], 
        [13,8,11,5,6,15,0,3,4,7,2,12,1,10,14,9], 
        [10,6,9,0,12,11,7,13,15,1,3,14,5,2,8,4], 
        [3,15,0,6,10,1,13,8,9,4,5,11,12,7,2,14] 
    ], 
    [ 
        [2,12,4,1,7,10,11,6,8,5,3,15,13,0,14,9], 
        [14,11,2,12,4,7,13,1,5,0,15,10,3,9,8,6], 
        [4,2,1,11,10,13,7,8,15,9,12,5,6,3,0,14], 
        [11,8,12,7,1,14,2,13,6,15,0,9,10,4,5,3] 
    ], 
    [ 
        [12,1,10,15,9,2,6,8,0,13,3,4,14,7,5,11], 
        [10,15,4,2,7,12,9,5,6,1,13,14,0,11,3,8], 
        [9,14,15,5,2,8,12,3,7,0,4,10,1,13,11,6], 
        [4,3,2,12,9,5,15,10,11,14,1,7,6,0,8,13] 
    ], 
    [ 
        [4,11,2,14,15,0,8,13,3,12,9,7,5,10,6,1], 
        [13,0,11,7,4,9,1,10,14,3,5,12,2,15,8,6], 
        [1,4,11,13,12,3,7,14,10,15,6,8,0,5,9,2], 
        [6,11,13,8,1,4,10,7,9,5,0,15,14,2,3,12] 
    ], 
    [ 
        [13,2,8,4,6,15,11,1,10,9,3,14,5,0,12,7], 
        [1,15,13,8,10,3,7,4,12,5,6,11,0,14,9,2], 
        [7,11,4,1,9,12,14,2,0,6,10,13,15,3,5,8], 
        [2,1,14,7,4,10,8,13,15,12,9,0,3,5,6,11] 
    ]]

P = [16,7,20,21,
     29,12,28,17,
     1,15,23,26,
     5,18,31,10,
     2,8,24,14,
     32,27,3,9,
     19,13,30,6,
     22,11,4,25
     ]


################# KEYGEN TABLES #################


PC1 = [57,49,41,33,25,17,9,
       1,58,50,42,34,26,18,
       10,2,59,51,43,35,27,
       19,11,3,60,52,44,36,

       63,55,47,39,31,23,15,
       7,62,54,46,38,30,22,
       14,6,61,53,45,37,29,
       21,13,5,28,20,12,4
       ]

PC2 = [14,17,11,24,1,5,
       3,28,15,6,21,10,
       23,19,12,4,26,8,
       16,7,27,20,13,2,
       41,52,31,37,47,55,
       30,40,51,45,33,48,
       44,49,39,56,34,53,
       46,42,50,36,29,32
       ]

SHIFT_TABLE = [1,1,2,2,
               2,2,2,2,
               1,2,2,2,
               2,2,2,1
               ] 



################# HEX/BIN TABLES #################



#hex to binary LUT
H2B = {}
H2B['0']= "0000" 
H2B['1']= "0001" 
H2B['2']= "0010" 
H2B['3']= "0011" 
H2B['4']= "0100" 
H2B['5']= "0101" 
H2B['6']= "0110" 
H2B['7']= "0111" 
H2B['8']= "1000" 
H2B['9']= "1001" 
H2B['A']= "1010" 
H2B['B']= "1011" 
H2B['C']= "1100" 
H2B['D']= "1101" 
H2B['E']= "1110" 
H2B['F']= "1111" 

#binary to hex LUT
B2H = {}
B2H["0000"]= "0" 
B2H["0001"]= "1" 
B2H["0010"]= "2" 
B2H["0011"]= "3" 
B2H["0100"]= "4" 
B2H["0101"]= "5" 
B2H["0110"]= "6" 
B2H["0111"]= "7" 
B2H["1000"]= "8" 
B2H["1001"]= "9" 
B2H["1010"]= "A" 
B2H["1011"]= "B" 
B2H["1100"]= "C" 
B2H["1101"]= "D" 
B2H["1110"]= "E" 
B2H["1111"]= "F"


################# CIPHER TABLES #################


IP = [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,
      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
      ]

IP_inv = [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
          ]

E = [32,1,2,3,4,5,
     4,5,6,7,8,9,
     8,9,10,11,12,13,
     12,13,14,15,16,17,
     16,17,18,19,20,21,
     20,21,22,23,24,25,
     24,25,26,27,28,29,
     28,29,30,31,32,1
     ]

S = [[
        [14,4,13,1,2,15,11,8,3,10,6,12,5,9,0,7], 
        [0,15,7,4,14,2,13,1,10,6,12,11,9,5,3,8], 
        [4,1,14,8,13,6,2,11,15,12,9,7,3,10,5,0], 
        [15,12,8,2,4,9,1,7,5,11,3,14,10,0,6,13] 
    ], 
    [ 
        [15,1,8,14,6,11,3,4,9,7,2,13,12,0,5,10], 
        [3,13,4,7,15,2,8,14,12,0,1,10,6,9,11,5], 
        [0,14,7,11,10,4,13,1,5,8,12,6,9,3,2,15], 
        [13,8,10,1,3,15,4,2,11,6,7,12,0,5,14,9] 
    ], 
    [ 
        [10,0,9,14,6,3,15,5,1,13,12,7,11,4,2,8], 
        [13,7,0,9,3,4,6,10,2,8,5,14,12,11,15,1], 
        [13,6,4,9,8,15,3,0,11,1,2,12,5,10,14,7], 
        [1,10,13,0,6,9,8,7,4,15,14,3,11,5,2,12] 
    ], 
    [ 
        [7,13,14,3,0,6,9,10,1,2,8,5,11,12,4,15], 
        [13,8,11,5,6,15,0,3,4,7,2,12,1,10,14,9], 
        [10,6,9,0,12,11,7,13,15,1,3,14,5,2,8,4], 
        [3,15,0,6,10,1,13,8,9,4,5,11,12,7,2,14] 
    ], 
    [ 
        [2,12,4,1,7,10,11,6,8,5,3,15,13,0,14,9], 
        [14,11,2,12,4,7,13,1,5,0,15,10,3,9,8,6], 
        [4,2,1,11,10,13,7,8,15,9,12,5,6,3,0,14], 
        [11,8,12,7,1,14,2,13,6,15,0,9,10,4,5,3] 
    ], 
    [ 
        [12,1,10,15,9,2,6,8,0,13,3,4,14,7,5,11], 
        [10,15,4,2,7,12,9,5,6,1,13,14,0,11,3,8], 
        [9,14,15,5,2,8,12,3,7,0,4,10,1,13,11,6], 
        [4,3,2,12,9,5,15,10,11,14,1,7,6,0,8,13] 
    ], 
    [ 
        [4,11,2,14,15,0,8,13,3,12,9,7,5,10,6,1], 
        [13,0,11,7,4,9,1,10,14,3,5,12,2,15,8,6], 
        [1,4,11,13,12,3,7,14,10,15,6,8,0,5,9,2], 
        [6,11,13,8,1,4,10,7,9,5,0,15,14,2,3,12] 
    ], 
    [ 
        [13,2,8,4,6,15,11,1,10,9,3,14,5,0,12,7], 
        [1,15,13,8,10,3,7,4,12,5,6,11,0,14,9,2], 
        [7,11,4,1,9,12,14,2,0,6,10,13,15,3,5,8], 
        [2,1,14,7,4,10,8,13,15,12,9,0,3,5,6,11] 
    ]]

P = [16,7,20,21,
     29,12,28,17,
     1,15,23,26,
     5,18,31,10,
     2,8,24,14,
     32,27,3,9,
     19,13,30,6,
     22,11,4,25
     ]


################# KEYGEN TABLES #################


PC1 = [57,49,41,33,25,17,9,
       1,58,50,42,34,26,18,
       10,2,59,51,43,35,27,
       19,11,3,60,52,44,36,

       63,55,47,39,31,23,15,
       7,62,54,46,38,30,22,
       14,6,61,53,45,37,29,
       21,13,5,28,20,12,4
       ]

PC2 = [14,17,11,24,1,5,
       3,28,15,6,21,10,
       23,19,12,4,26,8,
       16,7,27,20,13,2,
       41,52,31,37,47,55,
       30,40,51,45,33,48,
       44,49,39,56,34,53,
       46,42,50,36,29,32
       ]

SHIFT_TABLE = [1,1,2,2,
               2,2,2,2,
               1,2,2,2,
               2,2,2,1
               ] 



################# HEX/BIN TABLES #################



#hex to binary LUT
H2B = {}
H2B['0']= "0000" 
H2B['1']= "0001" 
H2B['2']= "0010" 
H2B['3']= "0011" 
H2B['4']= "0100" 
H2B['5']= "0101" 
H2B['6']= "0110" 
H2B['7']= "0111" 
H2B['8']= "1000" 
H2B['9']= "1001" 
H2B['A']= "1010" 
H2B['B']= "1011" 
H2B['C']= "1100" 
H2B['D']= "1101" 
H2B['E']= "1110" 
H2B['F']= "1111" 

#binary to hex LUT
B2H = {}
B2H["0000"]= "0" 
B2H["0001"]= "1" 
B2H["0010"]= "2" 
B2H["0011"]= "3" 
B2H["0100"]= "4" 
B2H["0101"]= "5" 
B2H["0110"]= "6" 
B2H["0111"]= "7" 
B2H["1000"]= "8" 
B2H["1001"]= "9" 
B2H["1010"]= "A" 
B2H["1011"]= "B" 
B2H["1100"]= "C" 
B2H["1101"]= "D" 
B2H["1110"]= "E" 
B2H["1111"]= "F"
################# CIPHER TABLES ################# ################# KEYGEN TABLES ################# ################# HEX/BIN TABLES ################# #hex to binary LUT #binary to hex LUT