aes.h
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1 /**
2  * @file aes.h
3  * @brief AES (Advanced Encryption Standard)
4  *
5  * @section License
6  *
7  * Copyright (C) 2010-2018 Oryx Embedded SARL. All rights reserved.
8  *
9  * This file is part of CycloneCrypto Open.
10  *
11  * This program is free software; you can redistribute it and/or
12  * modify it under the terms of the GNU General Public License
13  * as published by the Free Software Foundation; either version 2
14  * of the License, or (at your option) any later version.
15  *
16  * This program is distributed in the hope that it will be useful,
17  * but WITHOUT ANY WARRANTY; without even the implied warranty of
18  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
19  * GNU General Public License for more details.
20  *
21  * You should have received a copy of the GNU General Public License
22  * along with this program; if not, write to the Free Software Foundation,
23  * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
24  *
25  * @author Oryx Embedded SARL (www.oryx-embedded.com)
26  * @version 1.9.0
27  **/
28 
29 #ifndef _AES_H
30 #define _AES_H
31 
32 //Dependencies
33 #include "core/crypto.h"
34 
35 //AES block size
36 #define AES_BLOCK_SIZE 16
37 //Common interface for encryption algorithms
38 #define AES_CIPHER_ALGO (&aesCipherAlgo)
39 
40 //C++ guard
41 #ifdef __cplusplus
42  extern "C" {
43 #endif
44 
45 
46 /**
47  * @brief AES algorithm context
48  **/
49 
50 typedef struct
51 {
53  uint32_t ek[60];
54  uint32_t dk[60];
55 } AesContext;
56 
57 
58 //AES related constants
59 extern const CipherAlgo aesCipherAlgo;
60 
61 //AES related functions
62 error_t aesInit(AesContext *context, const uint8_t *key, size_t keyLen);
63 void aesEncryptBlock(AesContext *context, const uint8_t *input, uint8_t *output);
64 void aesDecryptBlock(AesContext *context, const uint8_t *input, uint8_t *output);
65 
66 //C++ guard
67 #ifdef __cplusplus
68  }
69 #endif
70 
71 #endif
void aesDecryptBlock(AesContext *context, const uint8_t *input, uint8_t *output)
Decrypt a 16-byte block using AES algorithm.
Definition: aes.c:414
AES algorithm context.
Definition: aes.h:50
General definitions for cryptographic algorithms.
Common interface for encryption algorithms.
Definition: crypto.h:1073
uint_t nr
Definition: aes.h:52
void aesEncryptBlock(AesContext *context, const uint8_t *input, uint8_t *output)
Encrypt a 16-byte block using AES algorithm.
Definition: aes.c:304
error_t
Error codes.
Definition: error.h:40
unsigned int uint_t
Definition: compiler_port.h:43
error_t aesInit(AesContext *context, const uint8_t *key, size_t keyLen)
Key expansion.
Definition: aes.c:200
const CipherAlgo aesCipherAlgo
Definition: aes.c:178