aes.h
Go to the documentation of this file.
1 /**
2  * @file aes.h
3  * @brief AES (Advanced Encryption Standard)
4  *
5  * @section License
6  *
7  * SPDX-License-Identifier: GPL-2.0-or-later
8  *
9  * Copyright (C) 2010-2023 Oryx Embedded SARL. All rights reserved.
10  *
11  * This file is part of CycloneCRYPTO Open.
12  *
13  * This program is free software; you can redistribute it and/or
14  * modify it under the terms of the GNU General Public License
15  * as published by the Free Software Foundation; either version 2
16  * of the License, or (at your option) any later version.
17  *
18  * This program is distributed in the hope that it will be useful,
19  * but WITHOUT ANY WARRANTY; without even the implied warranty of
20  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
21  * GNU General Public License for more details.
22  *
23  * You should have received a copy of the GNU General Public License
24  * along with this program; if not, write to the Free Software Foundation,
25  * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
26  *
27  * @author Oryx Embedded SARL (www.oryx-embedded.com)
28  * @version 2.3.0
29  **/
30 
31 #ifndef _AES_H
32 #define _AES_H
33 
34 //Dependencies
35 #include "core/crypto.h"
36 
37 //Application specific context
38 #ifndef AES_PRIVATE_CONTEXT
39  #define AES_PRIVATE_CONTEXT
40 #endif
41 
42 //AES block size
43 #define AES_BLOCK_SIZE 16
44 //Common interface for encryption algorithms
45 #define AES_CIPHER_ALGO (&aesCipherAlgo)
46 
47 //C++ guard
48 #ifdef __cplusplus
49 extern "C" {
50 #endif
51 
52 
53 /**
54  * @brief AES algorithm context
55  **/
56 
57 typedef struct
58 {
60  uint32_t ek[60];
61  uint32_t dk[60];
63 } AesContext;
64 
65 
66 //AES related constants
67 extern const CipherAlgo aesCipherAlgo;
68 
69 //AES related functions
70 error_t aesInit(AesContext *context, const uint8_t *key, size_t keyLen);
71 
72 void aesEncryptBlock(AesContext *context, const uint8_t *input,
73  uint8_t *output);
74 
75 void aesDecryptBlock(AesContext *context, const uint8_t *input,
76  uint8_t *output);
77 
78 void aesDeinit(AesContext *context);
79 
80 //C++ guard
81 #ifdef __cplusplus
82 }
83 #endif
84 
85 #endif
void aesDeinit(AesContext *context)
Release AES context.
Definition: aes.c:532
#define AES_PRIVATE_CONTEXT
Definition: aes.h:39
error_t aesInit(AesContext *context, const uint8_t *key, size_t keyLen)
Key expansion.
Definition: aes.c:203
void aesEncryptBlock(AesContext *context, const uint8_t *input, uint8_t *output)
Encrypt a 16-byte block using AES algorithm.
Definition: aes.c:312
AES algorithm context.
Definition: aes.h:58
error_t
Error codes.
Definition: error.h:43
General definitions for cryptographic algorithms.
void aesDecryptBlock(AesContext *context, const uint8_t *input, uint8_t *output)
Decrypt a 16-byte block using AES algorithm.
Definition: aes.c:423
uint_t nr
Definition: aes.h:59
Common interface for encryption algorithms.
Definition: crypto.h:1001
unsigned int uint_t
Definition: compiler_port.h:50
const CipherAlgo aesCipherAlgo
Definition: aes.c:180