cmac.h

00001 /**************************************************************************
00002 Copyright (C) 2009 Lander Casado, Philippas Tsigas
00003 All rights reserved.
00004 Permission is hereby granted, free of charge, to any person obtaining
00005 a copy of this software and associated documentation files 
00006 (the "Software"), to deal with the Software without restriction, including
00007 without limitation the rights to use, copy, modify, merge, publish, 
00008 distribute, sublicense, and/or sell copies of the Software, and to
00009 permit persons to whom the Software is furnished to do so, subject to
00010 the following conditions: 
00011 Redistributions of source code must retain the above copyright notice, 
00012 this list of conditions and the following disclaimers. Redistributions in
00013 binary form must reproduce the above copyright notice, this list of
00014 conditions and the following disclaimers in the documentation and/or 
00015 other materials provided with the distribution.
00016 In no event shall the authors or copyright holders be liable for any special,
00017 incidental, indirect or consequential damages of any kind, or any damages 
00018 whatsoever resulting from loss of use, data or profits, whether or not 
00019 advised of the possibility of damage, and on any theory of liability, 
00020 arising out of or in connection with the use or performance of this software.
00021  
00022 THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
00023 OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
00024 FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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00029 *****************************************************************************/
00030 
00031 #ifndef _CMAC_H_
00032 #define _CMAC_H_
00033 
00034 #include "aes.h" 
00035   
00036 #define AES_CMAC_KEY_LENGTH     16
00037 #define AES_CMAC_DIGEST_LENGTH  16
00038  
00039 typedef struct _AES_CMAC_CTX {
00040             aes_context    rijndael;
00041             uint8_t        X[16];
00042             uint8_t        M_last[16];
00043             uint32_t       M_n;
00044     } AES_CMAC_CTX;
00045    
00046 //#include <sys/cdefs.h>
00047     
00048 //__BEGIN_DECLS
00049 void     AES_CMAC_Init(AES_CMAC_CTX * ctx);
00050 void     AES_CMAC_SetKey(AES_CMAC_CTX * ctx, const uint8_t key[AES_CMAC_KEY_LENGTH]);
00051 void     AES_CMAC_Update(AES_CMAC_CTX * ctx, const uint8_t * data, uint32_t len);
00052           //          __attribute__((__bounded__(__string__,2,3)));
00053 void     AES_CMAC_Final(uint8_t digest[AES_CMAC_DIGEST_LENGTH], AES_CMAC_CTX  * ctx);
00054             //     __attribute__((__bounded__(__minbytes__,1,AES_CMAC_DIGEST_LENGTH)));
00055 //__END_DECLS
00056 
00057 #endif /* _CMAC_H_ */