1 /* $NetBSD: aes_ccm.h,v 1.2 2020/07/27 20:44:30 riastradh Exp $ */ 2 3 /*- 4 * Copyright (c) 2020 The NetBSD Foundation, Inc. 5 * All rights reserved. 6 * 7 * Redistribution and use in source and binary forms, with or without 8 * modification, are permitted provided that the following conditions 9 * are met: 10 * 1. Redistributions of source code must retain the above copyright 11 * notice, this list of conditions and the following disclaimer. 12 * 2. Redistributions in binary form must reproduce the above copyright 13 * notice, this list of conditions and the following disclaimer in the 14 * documentation and/or other materials provided with the distribution. 15 * 16 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 17 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 18 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 19 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 20 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 21 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 22 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 23 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 24 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 25 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 26 * POSSIBILITY OF SUCH DAMAGE. 27 */ 28 29 #ifndef _CRYPTO_AES_AES_CCM_H 30 #define _CRYPTO_AES_AES_CCM_H 31 32 #include <sys/types.h> 33 34 struct aesenc; 35 36 struct aes_ccm { 37 const struct aesenc *enc; 38 uint8_t authctr[32]; /* authenticator and counter */ 39 uint8_t out[16]; /* AES output block */ 40 size_t mlen, mleft; 41 unsigned i, nr, L, M; 42 }; 43 44 void aes_ccm_init(struct aes_ccm *, unsigned, const struct aesenc *, 45 unsigned, unsigned, const uint8_t *, unsigned, const void *, size_t, 46 size_t); 47 void aes_ccm_enc(struct aes_ccm *, const void *, void *, size_t); 48 void aes_ccm_dec(struct aes_ccm *, const void *, void *, size_t); 49 void aes_ccm_tag(struct aes_ccm *, void *); 50 int aes_ccm_verify(struct aes_ccm *, const void *); 51 52 int aes_ccm_selftest(void); 53 54 #endif /* _CRYPTO_AES_AES_CCM_H */ 55