ccm.h
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1 /**
2  * @file ccm.h
3  * @brief Cipher Block Chaining-Message Authentication Code (CCM)
4  *
5  * @section License
6  *
7  * SPDX-License-Identifier: GPL-2.0-or-later
8  *
9  * Copyright (C) 2010-2024 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 2.4.4
29  **/
30 
31 #ifndef _CCM_H
32 #define _CCM_H
33 
34 //Dependencies
35 #include "core/crypto.h"
36 
37 //C++ guard
38 #ifdef __cplusplus
39 extern "C" {
40 #endif
41 
42 //CCM related functions
43 error_t ccmEncrypt(const CipherAlgo *cipher, void *context, const uint8_t *n,
44  size_t nLen, const uint8_t *a, size_t aLen, const uint8_t *p, uint8_t *c,
45  size_t length, uint8_t *t, size_t tLen);
46 
47 error_t ccmDecrypt(const CipherAlgo *cipher, void *context, const uint8_t *n,
48  size_t nLen, const uint8_t *a, size_t aLen, const uint8_t *c, uint8_t *p,
49  size_t length, const uint8_t *t, size_t tLen);
50 
51 error_t ccmFormatBlock0(size_t q, const uint8_t *n, size_t nLen, size_t aLen,
52  size_t tLen, uint8_t *b);
53 
54 void ccmXorBlock(uint8_t *x, const uint8_t *a, const uint8_t *b, size_t n);
55 
56 void ccmFormatCounter0(const uint8_t *n, size_t nLen, uint8_t *ctr);
57 void ccmIncCounter(uint8_t *ctr, size_t n);
58 
59 //C++ guard
60 #ifdef __cplusplus
61 }
62 #endif
63 
64 #endif
b
uint8_t b
Definition: nbns_common.h:104
a
uint8_t a
Definition: ndp.h:411
p
uint8_t p
Definition: ndp.h:300
x
uint8_t x
Definition: lldp_ext_med.h:211
t
uint8_t t
Definition: lldp_ext_med.h:212
ccmEncrypt
error_t ccmEncrypt(const CipherAlgo *cipher, void *context, const uint8_t *n, size_t nLen, const uint8_t *a, size_t aLen, const uint8_t *p, uint8_t *c, size_t length, uint8_t *t, size_t tLen)
Authenticated encryption using CCM.
Definition: ccm.c:67
error_t
error_t
Error codes.
Definition: error.h:43
crypto.h
General definitions for cryptographic algorithms.
length
uint8_t length
Definition: tcp.h:368
ccmXorBlock
void ccmXorBlock(uint8_t *x, const uint8_t *a, const uint8_t *b, size_t n)
XOR operation.
Definition: ccm.c:399
n
uint8_t n
Definition: dhcpv6_common.h:416
ccmDecrypt
error_t ccmDecrypt(const CipherAlgo *cipher, void *context, const uint8_t *n, size_t nLen, const uint8_t *a, size_t aLen, const uint8_t *c, uint8_t *p, size_t length, const uint8_t *t, size_t tLen)
Authenticated decryption using CCM.
Definition: ccm.c:208
ccmFormatCounter0
void ccmFormatCounter0(const uint8_t *n, size_t nLen, uint8_t *ctr)
Format initial counter value CTR(0)
Definition: ccm.c:418
CipherAlgo
Common interface for encryption algorithms.
Definition: crypto.h:1068
ccmFormatBlock0
error_t ccmFormatBlock0(size_t q, const uint8_t *n, size_t nLen, size_t aLen, size_t tLen, uint8_t *b)
Format first block B(0)
Definition: ccm.c:353
ccmIncCounter
void ccmIncCounter(uint8_t *ctr, size_t n)
Increment counter block.
Definition: ccm.c:440
c
uint8_t c
Definition: ndp.h:514