/* ************************************************************************** */
/*                                                                            */
/*                                                        :::      ::::::::   */
/*   sl_sha2.h                                          :+:      :+:    :+:   */
/*                                                    +:+ +:+         +:+     */
/*   By: bchanot <bchanot@student.42.fr>            +#+  +:+       +#+        */
/*                                                +#+#+#+#+#+   +#+           */
/*   Created: 2018/09/26 20:13:19 by bchanot           #+#    #+#             */
/*   Updated: 2018/10/10 12:55:47 by bchanot          ###   ########.fr       */
/*                                                                            */
/* ************************************************************************** */

#ifndef SL_SHA2_H
# define SL_SHA2_H

# define EP0_SHA2(x) (ROR32(x, 2) ^ ROR32(x, 13) ^ ROR32(x, 22))
# define EP1_SHA2(x) (ROR32(x, 6) ^ ROR32(x, 11) ^ ROR32(x, 25))
# define SIG0_SHA2(x) (ROR32(x, 7) ^ ROR32(x, 18) ^ ((x) >> 3))
# define SIG1_SHA2(x) (ROR32(x, 17) ^ ROR32(x, 19) ^ ((x) >> 10))

# define SHA224 0
# define SHA256 1

typedef struct	s_sha2
{
	t_uint8		buff[64];
	t_uint32	state[8];
	t_uint32	count[2];
}				t_sha2;

typedef struct	s_process_sha2
{
	t_uint32	a;
	t_uint32	b;
	t_uint32	c;
	t_uint32	d;
	t_uint32	e;
	t_uint32	f;
	t_uint32	g;
	t_uint32	h;
}				t_process_sha2;

void			sl_sha2_get_registers(t_uint32 *m, t_process_sha2 *t, \
					size_t i);
void			sl_sha2_process_init_add(t_sha2 *ctx, t_process_sha2 *t, \
					t_bool init);

void			sl_sha2_init(t_sha2 *ctx, t_uint8 sha);
void			sl_sha2_update(t_sha2 *ctx, const t_uint8 *data, size_t len);
void			sl_sha2_final(t_sha2 *ctx);

void			sl_sha2_get_hash(t_sha2 *ctx, t_uint8 *hash);

#endif