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/* ************************************************************************** */
/* */
/* ::: :::::::: */
/* message_digest.c :+: :+: :+: */
/* +:+ +:+ +:+ */
/* By: charles <me@cacharle.xyz> +#+ +:+ +#+ */
/* +#+#+#+#+#+ +#+ */
/* Created: 2020/08/01 15:03:39 by charles #+# #+# */
/* Updated: 2020/08/02 11:56:27 by charles ### ########.fr */
/* */
/* ************************************************************************** */
#include "ft_ssl.h"
char *message_digest(t_message_digest_param *param, uint8_t *message_origin, uint64_t size)
{
size_t i;
uint64_t padding_size;
uint8_t *message;
padding_size = (param->chunk_size - (size + sizeof(uint64_t)) % param->chunk_size) + sizeof(uint64_t);
if ((message = malloc(size + padding_size)) == NULL)
return (NULL);
ft_memcpy(message, message_origin, size);
ft_memset(message + size, 0x0, padding_size);
message[size] |= 1 << 7;
*((uint64_t*)(message + size + padding_size - sizeof(uint64_t))) = size * 8;
size += padding_size;
i = 0;
while (i < size)
{
param->compression_state = param->compression_func(param->compression_state, message + i);
if (param->compression_state == NULL)
{
free(message);
return (NULL);
}
i += param->chunk_size;
}
// FIXME reset state
return (bytes_to_str(param->compression_state, param->compression_state_size));
}
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