/* ************************************************************************** */
/*                                                                            */
/*                                                        :::      ::::::::   */
/*   sl_sha_init.c                                      :+:      :+:    :+:   */
/*                                                    +:+ +:+         +:+     */
/*   By: bchanot <bchanot@student.42.fr>            +#+  +:+       +#+        */
/*                                                +#+#+#+#+#+   +#+           */
/*   Created: 2018/09/27 00:59:20 by bchanot           #+#    #+#             */
/*   Updated: 2018/10/10 12:54:19 by bchanot          ###   ########.fr       */
/*                                                                            */
/* ************************************************************************** */

#include "ft_ssl.h"
#include "sl_sha2.h"
#include "sl_sha3_5.h"

void	sl_sha2_init(t_sha2 *ctx, t_uint8 sha)
{
	if (sha == SHA256)
	{
		ctx->state[0] = 0x6a09e667;
		ctx->state[1] = 0xbb67ae85;
		ctx->state[2] = 0x3c6ef372;
		ctx->state[3] = 0xa54ff53a;
		ctx->state[4] = 0x510e527f;
		ctx->state[5] = 0x9b05688c;
		ctx->state[6] = 0x1f83d9ab;
		ctx->state[7] = 0x5be0cd19;
	}
	else if (sha == SHA224)
	{
		ctx->state[0] = 0xc1059ed8;
		ctx->state[1] = 0x367cd507;
		ctx->state[2] = 0x3070dd17;
		ctx->state[3] = 0xf70e5939;
		ctx->state[4] = 0xffc00b31;
		ctx->state[5] = 0x68581511;
		ctx->state[6] = 0x64f98fa7;
		ctx->state[7] = 0xbefa4fa4;
	}
	ft_bzero(ctx->count, sizeof(ctx->count));
	ft_bzero(ctx->buff, sizeof(ctx->buff));
}

void	sl_sha2_process_init_add(t_sha2 *ctx, t_process_sha2 *t,
		t_bool init)
{
	if (init)
	{
		t->a = ctx->state[0];
		t->b = ctx->state[1];
		t->c = ctx->state[2];
		t->d = ctx->state[3];
		t->e = ctx->state[4];
		t->f = ctx->state[5];
		t->g = ctx->state[6];
		t->h = ctx->state[7];
	}
	else
	{
		ctx->state[0] += t->a;
		ctx->state[1] += t->b;
		ctx->state[2] += t->c;
		ctx->state[3] += t->d;
		ctx->state[4] += t->e;
		ctx->state[5] += t->f;
		ctx->state[6] += t->g;
		ctx->state[7] += t->h;
	}
}

void	sl_sha3_5_init(t_sha3_5 *ctx, t_uint8 sha)
{
	if (sha == SHA512)
	{
		ctx->state[0] = 0x6a09e667f3bcc908;
		ctx->state[1] = 0xbb67ae8584caa73b;
		ctx->state[2] = 0x3c6ef372fe94f82b;
		ctx->state[3] = 0xa54ff53a5f1d36f1;
		ctx->state[4] = 0x510e527fade682d1;
		ctx->state[5] = 0x9b05688c2b3e6c1f;
		ctx->state[6] = 0x1f83d9abfb41bd6b;
		ctx->state[7] = 0x5be0cd19137e2179;
	}
	else if (sha == SHA384)
	{
		ctx->state[0] = 0xcbbb9d5dc1059ed8;
		ctx->state[1] = 0x629a292a367cd507;
		ctx->state[2] = 0x9159015a3070dd17;
		ctx->state[3] = 0x152fecd8f70e5939;
		ctx->state[4] = 0x67332667ffc00b31;
		ctx->state[5] = 0x8eb44a8768581511;
		ctx->state[6] = 0xdb0c2e0d64f98fa7;
		ctx->state[7] = 0x47b5481dbefa4fa4;
	}
	ft_bzero(ctx->count, sizeof(ctx->count));
	ft_bzero(ctx->buff, sizeof(ctx->buff));
}

void	sl_sha3_5_process_init_add(t_sha3_5 *ctx, t_process_sha3_5 *t,
		t_bool init)
{
	if (init)
	{
		t->a = ctx->state[0];
		t->b = ctx->state[1];
		t->c = ctx->state[2];
		t->d = ctx->state[3];
		t->e = ctx->state[4];
		t->f = ctx->state[5];
		t->g = ctx->state[6];
		t->h = ctx->state[7];
	}
	else
	{
		ctx->state[0] += t->a;
		ctx->state[1] += t->b;
		ctx->state[2] += t->c;
		ctx->state[3] += t->d;
		ctx->state[4] += t->e;
		ctx->state[5] += t->f;
		ctx->state[6] += t->g;
		ctx->state[7] += t->h;
	}
}