54 lines
1.3 KiB
C
54 lines
1.3 KiB
C
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#include "t.h"
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#include "tests.h"
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#include "ft_des.h"
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#include "libft.h"
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int perform_initial_permutation()
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{
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// all 64 bits:
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// 00000001 00100011 01000101 01100111 10001001 10101011 11001101 11101111
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// block contains message bits in big-endian order
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t_byte1 message[FT_DES_BIT_BLOCK_SIZE] = (t_byte1 [FT_DES_BIT_BLOCK_SIZE]) {
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0, 0, 0, 0, 0, 0, 0, 1,
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0, 0, 1, 0, 0, 0, 1, 1,
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0, 1, 0, 0, 0, 1, 0, 1,
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0, 1, 1, 0, 0, 1, 1, 1,
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1, 0, 0, 0, 1, 0, 0, 1,
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1, 0, 1, 0, 1, 0, 1, 1,
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1, 1, 0, 0, 1, 1, 0, 1,
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1, 1, 1, 0, 1, 1, 1, 1,
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};
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// all 64 bits after initial permutation:
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// 11001100 00000000 11001100 11111111 11110000 10101010 11110000 10101010
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t_byte1 expect[FT_DES_BIT_BLOCK_SIZE] = (t_byte1 [FT_DES_BIT_BLOCK_SIZE]) {
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1, 1, 0, 0, 1, 1, 0, 0,
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0, 0, 0, 0, 0, 0, 0, 0,
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1, 1, 0, 0, 1, 1, 0, 0,
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1, 1, 1, 1, 1, 1, 1, 1,
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1, 1, 1, 1, 0, 0, 0, 0,
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1, 0, 1, 0, 1, 0, 1, 0,
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1, 1, 1, 1, 0, 0, 0, 0,
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1, 0, 1, 0, 1, 0, 1, 0,
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};
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t_byte1 initial_permutation[FT_DES_BIT_BLOCK_SIZE];
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ft_bzero(initial_permutation, FT_DES_BIT_BLOCK_SIZE);
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ft_des_initial_permutation(message, initial_permutation);
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int i = 0;
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while(i < FT_DES_BIT_BLOCK_SIZE)
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{
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_is(initial_permutation[i] == expect[i]);
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i++;
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}
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_end("perform initial permutation");
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}
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int des_tests()
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{
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_should(perform_initial_permutation);
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return 0;
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}
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