55 lines
2.2 KiB
C
55 lines
2.2 KiB
C
/* $NetBSD: aes_ccm.h,v 1.2 2020/07/27 20:44:30 riastradh Exp $ */
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/*-
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* Copyright (c) 2020 The NetBSD Foundation, Inc.
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* All rights reserved.
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*
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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 NETBSD FOUNDATION, INC. AND CONTRIBUTORS
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* ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
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* TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
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* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*/
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#ifndef _CRYPTO_AES_AES_CCM_H
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#define _CRYPTO_AES_AES_CCM_H
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#include <sys/types.h>
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struct aesenc;
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struct aes_ccm {
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const struct aesenc *enc;
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uint8_t authctr[32]; /* authenticator and counter */
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uint8_t out[16]; /* AES output block */
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size_t mlen, mleft;
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unsigned i, nr, L, M;
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};
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void aes_ccm_init(struct aes_ccm *, unsigned, const struct aesenc *,
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unsigned, unsigned, const uint8_t *, unsigned, const void *, size_t,
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size_t);
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void aes_ccm_enc(struct aes_ccm *, const void *, void *, size_t);
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void aes_ccm_dec(struct aes_ccm *, const void *, void *, size_t);
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void aes_ccm_tag(struct aes_ccm *, void *);
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int aes_ccm_verify(struct aes_ccm *, const void *);
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int aes_ccm_selftest(void);
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#endif /* _CRYPTO_AES_AES_CCM_H */
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