blob: f6dd0798d3fee28cf77fe9a1601d8bd39f220984 (
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
|
#ifndef _AES_H_
#define _AES_H_
#include <stdint.h>
#include <stddef.h>
#define AES128 1
//#define AES192 1
//#define AES256 1
#define AES_BLOCKLEN 16 // Block length in bytes - AES is 128b block only
#if defined(AES256) && (AES256 == 1)
#define AES_KEYLEN 32
#define AES_KEYEXPSIZE 240
#elif defined(AES192) && (AES192 == 1)
#define AES_KEYLEN 24
#define AES_KEYEXPSIZE 208
#else
#define AES_KEYLEN 16 // Key length in bytes
#define AES_KEYEXPSIZE 176
#endif
typedef struct
{
uint8_t RoundKey[AES_KEYEXPSIZE];
} AESCtx;
void aes_init(AESCtx *ctx, uint8_t *key);
// buffer size is exactly AES_BLOCKLEN bytes;
void aes_ecb_encrypt(AESCtx *ctx, uint8_t *buf);
void aes_ecb_decrypt(AESCtx *ctx, uint8_t *buf);
// buffer size MUST be mutile of AES_BLOCKLEN;
void aes_cbc_encrypt(AESCtx *ctx, uint8_t *iv, uint8_t *buf, size_t length);
void aes_cbc_decrypt(AESCtx *ctx, uint8_t *iv, uint8_t *buf, size_t length);
#endif
|
