145 lines
3.7 KiB
C
145 lines
3.7 KiB
C
/* ************************************************************************** */
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/* */
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/* ::: :::::::: */
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/* ft_des.h :+: :+: :+: */
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/* +:+ +:+ +:+ */
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/* By: gtertysh <marvin@42.fr> +#+ +:+ +#+ */
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/* +#+#+#+#+#+ +#+ */
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/* Created: 2019/01/19 17:58:39 by gtertysh #+# #+# */
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/* Updated: 2019/01/19 17:59:19 by gtertysh ### ########.fr */
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/* */
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/* ************************************************************************** */
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#ifndef FT_DES_H
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# define FT_DES_H
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# define FT_DES_BIT_BLOCK_SIZE 64
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# define FT_DES_EXPANDED_HALF_BLOCK_SIZE 48
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# define FT_DES_S_BOX_INPUT_SIZE 6
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# define FT_DES_S_BOX_OUTPUT_SIZE 4
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# define FT_DES_S_BOX_TABLE_ROWS 4
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# define FT_DES_S_BOX_TABLE_COLUMNS 16
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# define FT_DES_FEISTEL_FUNCTION_KEY_SIZE 48
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# define FT_DES_INITIAL_KEY_SIZE 64
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# define FT_DES_REDUCED_KEY_SIZE 56
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typedef unsigned char t_byte1;
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void ft_des_initial_permutation
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(
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t_byte1 message[FT_DES_BIT_BLOCK_SIZE],
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t_byte1 initial_permutation[FT_DES_BIT_BLOCK_SIZE]
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);
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void ft_des_final_permutation
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(
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t_byte1 before[FT_DES_BIT_BLOCK_SIZE],
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t_byte1 final_permutation[FT_DES_BIT_BLOCK_SIZE]
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);
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void ft_des_expansion_box
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(
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t_byte1 half[FT_DES_BIT_BLOCK_SIZE / 2],
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t_byte1 expanded[FT_DES_EXPANDED_HALF_BLOCK_SIZE]
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);
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void ft_des_s_box
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(
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t_byte1 input[FT_DES_S_BOX_INPUT_SIZE],
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t_byte1 output[FT_DES_S_BOX_OUTPUT_SIZE],
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t_byte1 table[FT_DES_S_BOX_TABLE_ROWS][FT_DES_S_BOX_TABLE_COLUMNS]
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);
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void ft_des_s_box_1
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(
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t_byte1 input[FT_DES_S_BOX_INPUT_SIZE],
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t_byte1 output[FT_DES_S_BOX_OUTPUT_SIZE]
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);
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void ft_des_s_box_2
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(
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t_byte1 input[FT_DES_S_BOX_INPUT_SIZE],
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t_byte1 output[FT_DES_S_BOX_OUTPUT_SIZE]
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);
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void ft_des_s_box_3
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(
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t_byte1 input[FT_DES_S_BOX_INPUT_SIZE],
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t_byte1 output[FT_DES_S_BOX_OUTPUT_SIZE]
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);
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void ft_des_s_box_4
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(
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t_byte1 input[FT_DES_S_BOX_INPUT_SIZE],
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t_byte1 output[FT_DES_S_BOX_OUTPUT_SIZE]
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);
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void ft_des_s_box_5
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(
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t_byte1 input[FT_DES_S_BOX_INPUT_SIZE],
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t_byte1 output[FT_DES_S_BOX_OUTPUT_SIZE]
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);
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void ft_des_s_box_6
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(
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t_byte1 input[FT_DES_S_BOX_INPUT_SIZE],
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t_byte1 output[FT_DES_S_BOX_OUTPUT_SIZE]
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);
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void ft_des_s_box_7
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(
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t_byte1 input[FT_DES_S_BOX_INPUT_SIZE],
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t_byte1 output[FT_DES_S_BOX_OUTPUT_SIZE]
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);
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void ft_des_s_box_8
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(
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t_byte1 input[FT_DES_S_BOX_INPUT_SIZE],
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t_byte1 output[FT_DES_S_BOX_OUTPUT_SIZE]
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);
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void ft_des_feistel_function_permutation
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(
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t_byte1 input[FT_DES_BIT_BLOCK_SIZE / 2],
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t_byte1 output[FT_DES_BIT_BLOCK_SIZE / 2]
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);
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void ft_des_feistel_function
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(
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t_byte1 right_half[FT_DES_BIT_BLOCK_SIZE / 2],
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t_byte1 key[FT_DES_FEISTEL_FUNCTION_KEY_SIZE],
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t_byte1 output[FT_DES_BIT_BLOCK_SIZE / 2]
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);
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void ft_des_key_permuted_choice_one
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(
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t_byte1 initial_key[FT_DES_INITIAL_KEY_SIZE],
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t_byte1 reduced_key[FT_DES_REDUCED_KEY_SIZE]
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);
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void ft_des_key_permuted_choice_two
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(
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t_byte1 input_key[FT_DES_REDUCED_KEY_SIZE],
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t_byte1 round_key[FT_DES_FEISTEL_FUNCTION_KEY_SIZE]
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);
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void ft_des_encryption_round_key
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(
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t_byte1 input_key[FT_DES_REDUCED_KEY_SIZE],
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t_byte1 round,
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t_byte1 round_key[FT_DES_FEISTEL_FUNCTION_KEY_SIZE]
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);
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void ft_des_rotate_half_key_left
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(
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t_byte1 half[FT_DES_REDUCED_KEY_SIZE / 2],
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t_byte1 rotation_number
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);
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void ft_des_rotate_half_key_right
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(
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t_byte1 half[FT_DES_REDUCED_KEY_SIZE / 2],
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t_byte1 rotation_number
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);
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#endif
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