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/*
* Copyright (c) The Industrial Lounge, 2007
*
* Copyright holder grants permission for redistribution and use in source
* and binary forms, with or without modification, provided that the
* following conditions are met:
* 1. Redistribution of source code must retain the above copyright
* notice, this list of conditions, and the following disclaimer
* in all source files.
* 2. Redistribution in binary form must retain the above copyright
* notice, this list of conditions, and the following disclaimer
* in the documentation and/or other materials provided with the
* distribution.
* 3. All advertising materials and documentation mentioning features
* or use of this software must display the following acknowledgement:
*
* "This product includes software written by
* Dan Harkins (dharkins at lounge dot org)"
*
* "DISCLAIMER OF LIABILITY
*
* THIS SOFTWARE IS PROVIDED BY THE INDUSTRIAL LOUNGE ``AS IS''
* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
* THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE INDUSTRIAL LOUNGE BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE."
*
* This license and distribution terms cannot be changed. In other words,
* this code cannot simply be copied and put under another distribution
* license (including the GNU public license).
*/
#ifndef _SIV_H_
#define _SIV_H_
#include <openssl/aes.h>
#define AES_128_BYTES 16
#define AES_192_BYTES 24
#define AES_256_BYTES 32
#define SIV_256 256
#define SIV_384 384
#define SIV_512 512
typedef struct _siv_ctx {
unsigned char K1[AES_BLOCK_SIZE];
unsigned char K2[AES_BLOCK_SIZE];
unsigned char T[AES_BLOCK_SIZE];
unsigned char benchmark[AES_BLOCK_SIZE];
AES_KEY ctr_sched;
AES_KEY s2v_sched;
} siv_ctx;
/*
* exported APIs
*/
void aes_cmac (siv_ctx *, const unsigned char *, int, unsigned char *);
int siv_init(siv_ctx *, const unsigned char *, int);
void siv_reset(siv_ctx *);
void s2v_benchmark(siv_ctx *);
void s2v_add(siv_ctx *, const unsigned char *);
void s2v_update(siv_ctx *, const unsigned char *, int);
int s2v_final(siv_ctx *, const unsigned char *, int, unsigned char *);
void siv_restart(siv_ctx *);
void siv_aes_ctr(siv_ctx *, const unsigned char *, const int, unsigned char *,
const unsigned char *);
int siv_encrypt (siv_ctx *ctx, const unsigned char *p, unsigned char *c,
const int len, unsigned char *counter,
const int nad, const int* adlens, const unsigned char** ads);
int siv_decrypt(siv_ctx *, const unsigned char *, unsigned char *,
const int, unsigned char *, const int, ... );
#endif /* _SIV_H_ */
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