rc2.h
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1 /**
2  * @file rc2.h
3  * @brief RC2 block cipher
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 _RC2_H
30 #define _RC2_H
31 
32 //Dependencies
33 #include "core/crypto.h"
34 
35 //RC2 block size
36 #define RC2_BLOCK_SIZE 8
37 //Common interface for encryption algorithms
38 #define RC2_CIPHER_ALGO (&rc2CipherAlgo)
39 
40 //C++ guard
41 #ifdef __cplusplus
42  extern "C" {
43 #endif
44 
45 
46 /**
47  * @brief RC2 algorithm context
48  **/
49 
50 typedef struct
51 {
52  union
53  {
54  uint16_t k[64];
55  uint8_t l[128];
56  };
57 } Rc2Context;
58 
59 
60 //RC2 related constants
61 extern const CipherAlgo rc2CipherAlgo;
62 
63 //RC2 related functions
64 error_t rc2Init(Rc2Context *context, const uint8_t *key, size_t keyLen);
65 
66 error_t rc2InitEx(Rc2Context *context, const uint8_t *key, size_t keyLen,
67  uint_t effectiveKeyLen);
68 
69 void rc2EncryptBlock(Rc2Context *context, const uint8_t *input, uint8_t *output);
70 void rc2DecryptBlock(Rc2Context *context, const uint8_t *input, uint8_t *output);
71 
72 //C++ guard
73 #ifdef __cplusplus
74  }
75 #endif
76 
77 #endif
RC2 algorithm context.
Definition: rc2.h:50
void rc2EncryptBlock(Rc2Context *context, const uint8_t *input, uint8_t *output)
Encrypt a 16-byte block using RC2 algorithm.
Definition: rc2.c:167
error_t rc2Init(Rc2Context *context, const uint8_t *key, size_t keyLen)
Initialize a RC2 context using the supplied key.
Definition: rc2.c:91
General definitions for cryptographic algorithms.
Common interface for encryption algorithms.
Definition: crypto.h:1073
error_t rc2InitEx(Rc2Context *context, const uint8_t *key, size_t keyLen, uint_t effectiveKeyLen)
Initialize a RC2 context using the supplied key.
Definition: rc2.c:107
const CipherAlgo rc2CipherAlgo
Definition: rc2.c:69
void rc2DecryptBlock(Rc2Context *context, const uint8_t *input, uint8_t *output)
Decrypt a 16-byte block using RC2 algorithm.
Definition: rc2.c:220
error_t
Error codes.
Definition: error.h:40
unsigned int uint_t
Definition: compiler_port.h:43
uint8_t l
Definition: ndp.h:408