diff options
Diffstat (limited to 'sys/crypto/gmac.h')
| -rw-r--r-- | sys/crypto/gmac.h | 50 |
1 files changed, 50 insertions, 0 deletions
diff --git a/sys/crypto/gmac.h b/sys/crypto/gmac.h new file mode 100644 index 00000000000..ce26faf2863 --- /dev/null +++ b/sys/crypto/gmac.h @@ -0,0 +1,50 @@ +/* $OpenBSD: gmac.h,v 1.1 2010/09/22 11:54:23 mikeb Exp $ */ + +/* + * Copyright (c) 2010 Mike Belopuhov <mike@vantronix.net> + * + * Permission to use, copy, modify, and distribute this software for any + * purpose with or without fee is hereby granted, provided that the above + * copyright notice and this permission notice appear in all copies. + * + * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES + * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF + * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR + * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES + * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN + * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF + * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. + */ + +#ifndef _GMAC_H_ +#define _GMAC_H_ + +#include <crypto/rijndael.h> + +#define GMAC_BLOCK_LEN 16 +#define GMAC_DIGEST_LEN 16 + +typedef struct _GHASH_CTX { + uint8_t H[GMAC_BLOCK_LEN]; /* hash subkey */ + uint8_t S[GMAC_BLOCK_LEN]; /* state */ + uint8_t Z[GMAC_BLOCK_LEN]; /* initial state */ +} GHASH_CTX; + +typedef struct _AES_GMAC_CTX { + GHASH_CTX ghash; + uint32_t K[4*(AES_MAXROUNDS + 1)]; + uint8_t J[GMAC_BLOCK_LEN]; /* counter block */ + int rounds; +} AES_GMAC_CTX; + +#include <sys/cdefs.h> + +__BEGIN_DECLS +void AES_GMAC_Init(AES_GMAC_CTX *); +void AES_GMAC_Setkey(AES_GMAC_CTX *, const uint8_t *, uint16_t); +void AES_GMAC_Reinit(AES_GMAC_CTX *, const uint8_t *, uint16_t); +int AES_GMAC_Update(AES_GMAC_CTX *, const uint8_t *, uint16_t); +void AES_GMAC_Final(uint8_t [GMAC_DIGEST_LEN], AES_GMAC_CTX *); +__END_DECLS + +#endif /* _GMAC_H_ */ |