blob: c696780e5fa7949a6446be349fa32dad0e599011 (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
|
/* ************************************************************************** */
/* */
/* ::: :::::::: */
/* message_digest.c :+: :+: :+: */
/* +:+ +:+ +:+ */
/* By: charles <me@cacharle.xyz> +#+ +:+ +#+ */
/* +#+#+#+#+#+ +#+ */
/* Created: 2020/08/01 15:03:39 by charles #+# #+# */
/* Updated: 2020/08/02 13:56:26 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;
void *local_state;
char *ret;
local_state = ft_memdup(param->compression_state_init, param->compression_state_size);
if (local_state == NULL)
return (NULL);
padding_size = (param->chunk_size - (size + sizeof(uint64_t)) % param->chunk_size) + sizeof(uint64_t);
if ((message = malloc(size + padding_size)) == NULL)
{
free(local_state);
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)
{
local_state = param->compression_func(local_state, message + i);
if (local_state == NULL)
{
free(message);
free(local_state);
return (NULL);
}
i += param->chunk_size;
}
free(message);
ret = bytes_to_str(local_state, param->compression_state_size);
free(local_state);
return (ret);
}
|
