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Diffstat (limited to 'sys/opencrypto/gmac.h')
-rw-r--r-- | sys/opencrypto/gmac.h | 56 |
1 files changed, 56 insertions, 0 deletions
diff --git a/sys/opencrypto/gmac.h b/sys/opencrypto/gmac.h new file mode 100644 index 0000000..909b78c --- /dev/null +++ b/sys/opencrypto/gmac.h @@ -0,0 +1,56 @@ +/*- + * Copyright (c) 2014 The FreeBSD Foundation + * All rights reserved. + * + * This software was developed by John-Mark Gurney under + * the sponsorship of the FreeBSD Foundation and + * Rubicon Communications, LLC (Netgate). + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * + * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``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 AUTHOR OR CONTRIBUTORS 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. + * + * $FreeBSD$ + * + */ + +#ifndef _GMAC_H_ +#define _GMAC_H_ + +#include "gfmult.h" +#include <crypto/rijndael/rijndael.h> + +#define GMAC_BLOCK_LEN 16 +#define GMAC_DIGEST_LEN 16 + +struct aes_gmac_ctx { + struct gf128table4 ghashtbl; + struct gf128 hash; + uint32_t keysched[4*(RIJNDAEL_MAXNR + 1)]; + uint8_t counter[GMAC_BLOCK_LEN]; + int rounds; +}; + +void AES_GMAC_Init(struct aes_gmac_ctx *); +void AES_GMAC_Setkey(struct aes_gmac_ctx *, const uint8_t *, uint16_t); +void AES_GMAC_Reinit(struct aes_gmac_ctx *, const uint8_t *, uint16_t); +int AES_GMAC_Update(struct aes_gmac_ctx *, const uint8_t *, uint16_t); +void AES_GMAC_Final(uint8_t [GMAC_DIGEST_LEN], struct aes_gmac_ctx *); + +#endif /* _GMAC_H_ */ |