346 lines
7 KiB
C
346 lines
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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# include <stdint.h>
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# define FT_DES_BYTE_BLOCK_SIZE 8
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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_ROUND_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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# define FT_DES_ROUND_COUNT 16
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# define FT_DES_READ_SIZE 1024
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# define FT_DES_MAX_HEX_KEY 16
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typedef uint64_t t_byte8;
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typedef unsigned char t_byte1;
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typedef struct s_des_ctx
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{
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int input_fd;
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int output_fd;
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int decode;
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int b64;
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int readed;
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t_byte1 buffer[FT_DES_BYTE_BLOCK_SIZE];
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t_byte1 key[FT_DES_INITIAL_KEY_SIZE];
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t_byte1 round_keys[FT_DES_ROUND_COUNT]
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[FT_DES_ROUND_KEY_SIZE];
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} t_des_ctx;
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typedef int (*t_ft_des_arg_parser_function)
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(int argc, char **argv, int position, t_des_ctx *c);
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typedef struct s_des_argument_parser
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{
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const char *arg;
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t_ft_des_arg_parser_function arg_parser;
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} t_des_argument_parser;
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typedef struct s_des_chunk_buffer
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{
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t_byte1 buffer[FT_DES_BYTE_BLOCK_SIZE];
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t_byte8 readed;
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} t_des_chunk_buffer;
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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_ROUND_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_ROUND_KEY_SIZE]
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);
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void ft_des_derive_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_ROUND_KEY_SIZE]
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);
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void ft_des_derive_decryption_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_ROUND_KEY_SIZE]
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);
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void ft_des_generate_encryption_round_keys
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(
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t_byte1 input_key[FT_DES_INITIAL_KEY_SIZE],
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t_byte1 keys[FT_DES_ROUND_COUNT][FT_DES_ROUND_KEY_SIZE]
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);
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void ft_des_generate_decryption_round_keys
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(
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t_byte1 input_key[FT_DES_INITIAL_KEY_SIZE],
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t_byte1 keys[FT_DES_ROUND_COUNT][FT_DES_ROUND_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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void ft_des_round
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(
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t_byte1 left_half[FT_DES_BIT_BLOCK_SIZE / 2],
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t_byte1 right_half[FT_DES_BIT_BLOCK_SIZE / 2],
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t_byte1 key[FT_DES_ROUND_KEY_SIZE]
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);
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void ft_des_process_block
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(
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t_byte1 plaintext[FT_DES_BYTE_BLOCK_SIZE],
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t_byte1 keys[FT_DES_ROUND_COUNT][FT_DES_ROUND_KEY_SIZE],
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t_byte1 ciphertext[FT_DES_BYTE_BLOCK_SIZE]
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);
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void ft_des_print_error
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(
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const char *error
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);
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void ft_des_ecb
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(
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int argc,
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char **argv
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);
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void ft_des_init_ctx
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(
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t_des_ctx *ctx
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);
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int ft_des_key_arg_parser
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(
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int argc,
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char **argv,
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int position,
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t_des_ctx *c
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);
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int ft_des_decode_arg_parser
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(
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int argc,
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char **argv,
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int position,
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t_des_ctx *c
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);
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int ft_des_encode_arg_parser
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(
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int argc,
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char **argv,
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int position,
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t_des_ctx *c
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);
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int ft_des_base64_arg_parser
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(
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int argc,
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char **argv,
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int position,
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t_des_ctx *c
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);
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int ft_des_input_file_arg_parser
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(
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int argc,
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char **argv,
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int position,
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t_des_ctx *c
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);
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int ft_des_output_file_arg_parser
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(
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int argc,
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char **argv,
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int position,
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t_des_ctx *c
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);
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int ft_des_password_arg_parser
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(
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int argc,
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char **argv,
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int position,
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t_des_ctx *c
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);
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int ft_des_init_vector_arg_parser
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(
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int argc,
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char **argv,
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int position,
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t_des_ctx *c
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);
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int ft_des_salt_arg_parser
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(
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int argc,
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char **argv,
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int position,
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t_des_ctx *c
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);
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void ft_des_ecb_decrypt
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(
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t_des_ctx *ctx
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);
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void ft_des_ecb_decrypt_b64
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(
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t_des_ctx *ctx
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);
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void ft_des_ecb_encrypt
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(
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t_des_ctx *ctx
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);
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void ft_des_ecb_encrypt_b64
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(
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t_des_ctx *ctx
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);
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void ft_des_ecb_encode_process_chunk
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(
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t_des_ctx *ctx,
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t_byte8 reaed,
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t_byte1 buffer[FT_DES_READ_SIZE]
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);
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void ft_des_ecb_finish_encrypt
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(
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t_des_ctx *ctx
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);
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void ft_des_generete_key_from_hex
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(
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char *hex_key,
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t_byte1 initla_key[FT_DES_INITIAL_KEY_SIZE]
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);
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const char *ft_des_hex_to_bit_key
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(
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const char *hex_key,
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t_byte1 bits_key[FT_DES_INITIAL_KEY_SIZE]
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);
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#endif
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