rc2.h
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1 /**
2  * @file rc2.h
3  * @brief RC2 block cipher
4  *
5  * @section License
6  *
7  * SPDX-License-Identifier: GPL-2.0-or-later
8  *
9  * Copyright (C) 2010-2020 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 1.9.8
29  **/
30 
31 #ifndef _RC2_H
32 #define _RC2_H
33 
34 //Dependencies
35 #include "core/crypto.h"
36 
37 //RC2 block size
38 #define RC2_BLOCK_SIZE 8
39 //Common interface for encryption algorithms
40 #define RC2_CIPHER_ALGO (&rc2CipherAlgo)
41 
42 //C++ guard
43 #ifdef __cplusplus
44 extern "C" {
45 #endif
46 
47 
48 /**
49  * @brief RC2 algorithm context
50  **/
51 
52 typedef struct
53 {
54  union
55  {
56  uint16_t k[64];
57  uint8_t l[128];
58  };
59 } Rc2Context;
60 
61 
62 //RC2 related constants
63 extern const CipherAlgo rc2CipherAlgo;
64 
65 //RC2 related functions
66 error_t rc2Init(Rc2Context *context, const uint8_t *key, size_t keyLen);
67 
68 error_t rc2InitEx(Rc2Context *context, const uint8_t *key, size_t keyLen,
69  uint_t effectiveKeyLen);
70 
71 void rc2EncryptBlock(Rc2Context *context, const uint8_t *input, uint8_t *output);
72 void rc2DecryptBlock(Rc2Context *context, const uint8_t *input, uint8_t *output);
73 
74 //C++ guard
75 #ifdef __cplusplus
76 }
77 #endif
78 
79 #endif
error_t rc2Init(Rc2Context *context, const uint8_t *key, size_t keyLen)
Initialize a RC2 context using the supplied key.
Definition: rc2.c:93
void rc2EncryptBlock(Rc2Context *context, const uint8_t *input, uint8_t *output)
Encrypt a 16-byte block using RC2 algorithm.
Definition: rc2.c:173
RC2 algorithm context.
Definition: rc2.h:52
error_t
Error codes.
Definition: error.h:42
void rc2DecryptBlock(Rc2Context *context, const uint8_t *input, uint8_t *output)
Decrypt a 16-byte block using RC2 algorithm.
Definition: rc2.c:226
General definitions for cryptographic algorithms.
const CipherAlgo rc2CipherAlgo
Definition: rc2.c:71
uint8_t l
Definition: ndp.h:411
Common interface for encryption algorithms.
Definition: crypto.h:1084
unsigned int uint_t
Definition: compiler_port.h:45
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:109