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57 lines
2.2 KiB
C
57 lines
2.2 KiB
C
/*-
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* Copyright (c) 2014 The FreeBSD Foundation
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* All rights reserved.
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*
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* This software was developed by John-Mark Gurney under
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* the sponsorship of the FreeBSD Foundation and
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* Rubicon Communications, LLC (Netgate).
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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* $FreeBSD$
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*
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*/
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#ifndef _GMAC_H_
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#define _GMAC_H_
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#include "gfmult.h"
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#include <crypto/rijndael/rijndael.h>
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#define GMAC_BLOCK_LEN 16
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#define GMAC_DIGEST_LEN 16
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struct aes_gmac_ctx {
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struct gf128table4 ghashtbl;
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struct gf128 hash;
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uint32_t keysched[4*(RIJNDAEL_MAXNR + 1)];
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uint8_t counter[GMAC_BLOCK_LEN];
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int rounds;
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};
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void AES_GMAC_Init(struct aes_gmac_ctx *);
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void AES_GMAC_Setkey(struct aes_gmac_ctx *, const uint8_t *, uint16_t);
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void AES_GMAC_Reinit(struct aes_gmac_ctx *, const uint8_t *, uint16_t);
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int AES_GMAC_Update(struct aes_gmac_ctx *, const uint8_t *, uint16_t);
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void AES_GMAC_Final(uint8_t [GMAC_DIGEST_LEN], struct aes_gmac_ctx *);
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#endif /* _GMAC_H_ */
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