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ccm.h
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1 /* dtls -- a very basic DTLS implementation
2  *
3  * Copyright (C) 2011--2012 Olaf Bergmann <bergmann@tzi.org>
4  *
5  * Permission is hereby granted, free of charge, to any person
6  * obtaining a copy of this software and associated documentation
7  * files (the "Software"), to deal in the Software without
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10  * of the Software, and to permit persons to whom the Software is
11  * furnished to do so, subject to the following conditions:
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13  * The above copyright notice and this permission notice shall be
14  * included in all copies or substantial portions of the Software.
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24  */
25 
26 #ifndef _DTLS_CCM_H_
27 #define _DTLS_CCM_H_
28 
29 #include "aes/rijndael.h"
30 
31 /* implementation of Counter Mode CBC-MAC, RFC 3610 */
32 
33 #define DTLS_CCM_BLOCKSIZE 16
34 #define DTLS_CCM_MAX 16
35 #define DTLS_CCM_NONCE_SIZE 12
57 long int
58 dtls_ccm_encrypt_message(rijndael_ctx *ctx, size_t M, size_t L,
59  unsigned char nonce[DTLS_CCM_BLOCKSIZE],
60  unsigned char *msg, size_t lm,
61  const unsigned char *aad, size_t la);
62 
63 long int
64 dtls_ccm_decrypt_message(rijndael_ctx *ctx, size_t M, size_t L,
65  unsigned char nonce[DTLS_CCM_BLOCKSIZE],
66  unsigned char *msg, size_t lm,
67  const unsigned char *aad, size_t la);
68 
69 #endif /* _DTLS_CCM_H_ */
long int dtls_ccm_encrypt_message(rijndael_ctx *ctx, size_t M, size_t L, unsigned char nonce[DTLS_CCM_BLOCKSIZE], unsigned char *msg, size_t lm, const unsigned char *aad, size_t la)
Definition: ccm.c:176
long int dtls_ccm_decrypt_message(rijndael_ctx *ctx, size_t M, size_t L, unsigned char nonce[DTLS_CCM_BLOCKSIZE], unsigned char *msg, size_t lm, const unsigned char *aad, size_t la)
Definition: ccm.c:240
#define DTLS_CCM_BLOCKSIZE
Definition: ccm.h:33