Home | History | Annotate | Line # | Download | only in opencrypto 
      1 /* $NetBSD: gmac.h,v 1.3 2020/06/29 23:34:48 riastradh Exp $ */
      2 /* OpenBSD: gmac.h,v 1.1 2010/09/22 11:54:23 mikeb Exp */
      3 
      4 /*
      5  * Copyright (c) 2010 Mike Belopuhov <mike (at) vantronix.net>
      6  *
      7  * Permission to use, copy, modify, and distribute this software for any
      8  * purpose with or without fee is hereby granted, provided that the above
      9  * copyright notice and this permission notice appear in all copies.
     10  *
     11  * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
     12  * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
     13  * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
     14  * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
     15  * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
     16  * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
     17  * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
     18  */
     19 
     20 #ifndef _GMAC_H_
     21 #define _GMAC_H_
     22 
     23 #include <crypto/aes/aes.h>
     24 
     25 #define GMAC_BLOCK_LEN		16
     26 #define GMAC_DIGEST_LEN		16
     27 
     28 #ifdef _LP64
     29 #define GMAC_INT uint64_t
     30 #define GMAC_INTLEN 8
     31 #else
     32 #define GMAC_INT uint32_t
     33 #define GMAC_INTLEN 4
     34 #endif
     35 
     36 typedef struct _GHASH_CTX {
     37 	GMAC_INT	H[GMAC_BLOCK_LEN/GMAC_INTLEN];	/* hash subkey */
     38 	GMAC_INT	S[GMAC_BLOCK_LEN/GMAC_INTLEN];	/* state */
     39 	GMAC_INT	Z[GMAC_BLOCK_LEN/GMAC_INTLEN];	/* initial state */
     40 } GHASH_CTX;
     41 
     42 typedef struct _AES_GMAC_CTX {
     43 	GHASH_CTX	ghash;
     44 	struct aesenc	K;
     45 	uint8_t		J[GMAC_BLOCK_LEN];		/* counter block */
     46 	int		rounds;
     47 } AES_GMAC_CTX;
     48 
     49 #include <sys/cdefs.h>
     50 
     51 __BEGIN_DECLS
     52 void	AES_GMAC_Init(AES_GMAC_CTX *);
     53 void	AES_GMAC_Setkey(AES_GMAC_CTX *, const uint8_t *, uint16_t);
     54 void	AES_GMAC_Reinit(AES_GMAC_CTX *, const uint8_t *, uint16_t);
     55 int	AES_GMAC_Update(AES_GMAC_CTX *, const uint8_t *, uint16_t);
     56 void	AES_GMAC_Final(uint8_t [GMAC_DIGEST_LEN], AES_GMAC_CTX *);
     57 __END_DECLS
     58 
     59 #endif /* _GMAC_H_ */
     60