58 lines
2.0 KiB
C
58 lines
2.0 KiB
C
/****************************************************************************
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* include/crypto/gmac.h
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* $OpenBSD: gmac.h,v 1.6 2017/05/02 11:44:32 mikeb Exp $
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*
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* Copyright (c) 2010 Mike Belopuhov
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*
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* Permission to use, copy, modify, and distribute this software for any
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* purpose with or without fee is hereby granted, provided that the above
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* copyright notice and this permission notice appear in all copies.
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*
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* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
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* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
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* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
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* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
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* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
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* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
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* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
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****************************************************************************/
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#ifndef __INCLUDE_CRYPTO_GMAC_H
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#define __INCLUDE_CRYPTO_GMAC_H
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/****************************************************************************
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* Included Files
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****************************************************************************/
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#include <sys/types.h>
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#include <crypto/aes.h>
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#define GMAC_BLOCK_LEN 16
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#define GMAC_DIGEST_LEN 16
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typedef struct _GHASH_CTX
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{
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uint8_t H[GMAC_BLOCK_LEN]; /* hash subkey */
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uint8_t S[GMAC_BLOCK_LEN]; /* state */
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uint8_t Z[GMAC_BLOCK_LEN]; /* initial state */
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}
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GHASH_CTX;
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typedef struct _AES_GMAC_CTX
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{
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GHASH_CTX ghash;
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AES_CTX K;
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uint8_t J[GMAC_BLOCK_LEN]; /* counter block */
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}
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AES_GMAC_CTX;
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extern void (*ghash_update)(FAR GHASH_CTX *, FAR uint8_t *, size_t);
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void aes_gmac_init(FAR void *);
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void aes_gmac_setkey(FAR void *, FAR const uint8_t *, uint16_t);
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void aes_gmac_reinit(FAR void *, FAR const uint8_t *, uint16_t);
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int aes_gmac_update(FAR void *, FAR const uint8_t *, size_t);
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void aes_gmac_final(FAR uint8_t *, FAR void *);
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#endif /* __INCLUDE_CRYPTO_GMAC_H */
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