idea.h
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1 /**
2  * @file idea.h
3  * @brief IDEA 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 _IDEA_H
30 #define _IDEA_H
31 
32 //Dependencies
33 #include "core/crypto.h"
34 
35 //IDEA block size
36 #define IDEA_BLOCK_SIZE 8
37 //Common interface for encryption algorithms
38 #define IDEA_CIPHER_ALGO (&ideaCipherAlgo)
39 
40 //C++ guard
41 #ifdef __cplusplus
42  extern "C" {
43 #endif
44 
45 
46 /**
47  * @brief IDEA algorithm context
48  **/
49 
50 typedef struct
51 {
52  uint16_t ek[52];
53  uint16_t dk[52];
54 } IdeaContext;
55 
56 
57 //IDEA related constants
58 extern const CipherAlgo ideaCipherAlgo;
59 
60 //IDEA related functions
61 error_t ideaInit(IdeaContext *context, const uint8_t *key, size_t keyLen);
62 void ideaEncryptBlock(IdeaContext *context, const uint8_t *input, uint8_t *output);
63 void ideaDecryptBlock(IdeaContext *context, const uint8_t *input, uint8_t *output);
64 
65 //C++ guard
66 #ifdef __cplusplus
67  }
68 #endif
69 
70 #endif
error_t ideaInit(IdeaContext *context, const uint8_t *key, size_t keyLen)
Initialize a IDEA context using the supplied key.
Definition: idea.c:125
void ideaDecryptBlock(IdeaContext *context, const uint8_t *input, uint8_t *output)
Decrypt a 16-byte block using IDEA algorithm.
Definition: idea.c:258
IDEA algorithm context.
Definition: idea.h:50
General definitions for cryptographic algorithms.
Common interface for encryption algorithms.
Definition: crypto.h:1073
void ideaEncryptBlock(IdeaContext *context, const uint8_t *input, uint8_t *output)
Encrypt a 16-byte block using IDEA algorithm.
Definition: idea.c:191
error_t
Error codes.
Definition: error.h:40
const CipherAlgo ideaCipherAlgo
Definition: idea.c:41