rc4.h
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1 /**
2  * @file rc4.h
3  * @brief RC4 encryption algorithm
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 _RC4_H
30 #define _RC4_H
31 
32 //Dependencies
33 #include "core/crypto.h"
34 
35 //Common interface for encryption algorithms
36 #define RC4_CIPHER_ALGO (&rc4CipherAlgo)
37 
38 //C++ guard
39 #ifdef __cplusplus
40  extern "C" {
41 #endif
42 
43 
44 /**
45  * @brief RC4 algorithm context
46  **/
47 
48 typedef struct
49 {
52  uint8_t s[256];
53 } Rc4Context;
54 
55 
56 //RC4 related constants
57 extern const CipherAlgo rc4CipherAlgo;
58 
59 //RC4 related functions
60 error_t rc4Init(Rc4Context *context, const uint8_t *key, size_t length);
61 void rc4Cipher(Rc4Context *context, const uint8_t *input, uint8_t *output, size_t length);
62 
63 //C++ guard
64 #ifdef __cplusplus
65  }
66 #endif
67 
68 #endif
const CipherAlgo rc4CipherAlgo
Definition: rc4.c:40
RC4 algorithm context.
Definition: rc4.h:48
General definitions for cryptographic algorithms.
Common interface for encryption algorithms.
Definition: crypto.h:1073
error_t rc4Init(Rc4Context *context, const uint8_t *key, size_t length)
Initialize an RC4 context using the supplied key.
Definition: rc4.c:62
uint_t j
Definition: rc4.h:51
uint8_t s
error_t
Error codes.
Definition: error.h:40
unsigned int uint_t
Definition: compiler_port.h:43
uint_t i
Definition: rc4.h:50
uint8_t length
Definition: dtls_misc.h:140
void rc4Cipher(Rc4Context *context, const uint8_t *input, uint8_t *output, size_t length)
Encrypt/decrypt data with the RC4 algorithm.
Definition: rc4.c:101