sha256.h

/* ************************************************************************** */
/*                                                                            */
/*                                                        :::      ::::::::   */
/*   sha256.h                                           :+:      :+:    :+:   */
/*                                                    +:+ +:+         +:+     */
/*   By: itiievsk <marvin@42.fr>                    +#+  +:+       +#+        */
/*                                                +#+#+#+#+#+   +#+           */
/*   Created: 2018/09/07 09:27:28 by itiievsk          #+#    #+#             */
/*   Updated: 2018/09/07 09:27:30 by itiievsk         ###   ########.fr       */
/*                                                                            */
/* ************************************************************************** */

#ifndef SHA256_H
# define SHA256_H

# define RR(a, b) (((a) >> (b)) | ((a) << (32 - (b))))
# define CH(x, y, z) (((x) & (y)) ^ (~(x) & (z)))
# define MAJ(x, y, z) (((x) & (y)) ^ ((x) & (z)) ^ ((y) & (z)))
# define E0(x) (RR(x, 2) ^ RR(x, 13) ^ RR(x, 22))
# define E1(x) (RR(x, 6) ^ RR(x, 11) ^ RR(x, 25))
# define S0(x) (RR(x, 7) ^ RR(x, 18) ^ ((x) >> 3))
# define S1(x) (RR(x, 17) ^ RR(x, 19) ^ ((x) >> 10))

typedef struct	s_sha256_ctx
{
	char		func[10];
	char		*file;
	uint32_t	state[8];
	uint32_t	a;
	uint32_t	b;
	uint32_t	c;
	uint32_t	d;
	uint32_t	e;
	uint32_t	f;
	uint32_t	g;
	uint32_t	h;
	size_t		len;
	int			argc;
	int			blocks;
	int			targets;
}				t_sha256_ctx;

static uint32_t	g_words[64] =
{
	0x428a2f98, 0x71374491, 0xb5c0fbcf, 0xe9b5dba5,
	0x3956c25b, 0x59f111f1, 0x923f82a4, 0xab1c5ed5,
	0xd807aa98, 0x12835b01, 0x243185be, 0x550c7dc3,
	0x72be5d74, 0x80deb1fe, 0x9bdc06a7, 0xc19bf174,
	0xe49b69c1, 0xefbe4786, 0x0fc19dc6, 0x240ca1cc,
	0x2de92c6f, 0x4a7484aa, 0x5cb0a9dc, 0x76f988da,
	0x983e5152, 0xa831c66d, 0xb00327c8, 0xbf597fc7,
	0xc6e00bf3, 0xd5a79147, 0x06ca6351, 0x14292967,
	0x27b70a85, 0x2e1b2138, 0x4d2c6dfc, 0x53380d13,
	0x650a7354, 0x766a0abb, 0x81c2c92e, 0x92722c85,
	0xa2bfe8a1, 0xa81a664b, 0xc24b8b70, 0xc76c51a3,
	0xd192e819, 0xd6990624, 0xf40e3585, 0x106aa070,
	0x19a4c116, 0x1e376c08, 0x2748774c, 0x34b0bcb5,
	0x391c0cb3, 0x4ed8aa4a, 0x5b9cca4f, 0x682e6ff3,
	0x748f82ee, 0x78a5636f, 0x84c87814, 0x8cc70208,
	0x90befffa, 0xa4506ceb, 0xbef9a3f7, 0xc67178f2
};

int				sha256_encrypt(char *str, t_flags *flags, t_sha256_ctx *ctx);
void			sha256_parse_targets(int argc, char **argv, t_flags *flags,
				t_sha256_ctx *ctx);
void			sha256_abcd_assign(t_sha256_ctx *ctx, char order);
void			sha256_transform(uint32_t *input, t_sha256_ctx *ctx, int i,
				int rnd);
void			sha256_process(uint32_t **input, t_sha256_ctx *ctx);
void			sha256_finalize(char *str, uint32_t **input, t_sha256_ctx *ctx);
void			sha256_print(char *str, t_flags *flags, t_sha256_ctx *ctx);
int				sha224_encrypt(char *str, t_flags *flags, t_sha256_ctx *ctx);
void			sha224_print(char *str, t_flags *flags, t_sha256_ctx *ctx);
#endif