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- /*
- * Copyright (c) 2014 The FreeBSD Foundation
- * Copyright (c) 2018, iXsystems Inc.
- * All rights reserved.
- *
- * This software was developed by Sean Eric Fagan, with lots of references
- * to existing AES-CCM (gmac) code.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions
- * are met:
- * 1. Redistributions of source code must retain the above copyright
- * notice, this list of conditions and the following disclaimer.
- * 2. Redistributions in binary form must reproduce the above copyright
- * notice, this list of conditions and the following disclaimer in the
- * documentation and/or other materials provided with the distribution.
- *
- * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
- * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
- * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
- * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
- * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
- * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
- * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
- * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
- * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
- * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
- * SUCH DAMAGE.
- *
- * $FreeBSD$
- *
- */
- #ifndef _CBC_CCM_H
- # define _CBC_CCM_H
- # include <sys/types.h>
- # include <crypto/rijndael/rijndael.h>
- # define CCM_CBC_BLOCK_LEN 16 /* 128 bits */
- # define CCM_CBC_MAX_DIGEST_LEN 16
- # define CCM_CBC_MIN_DIGEST_LEN 4
- /*
- * This is the authentication context structure;
- * the encryption one is similar.
- */
- struct aes_cbc_mac_ctx {
- uint64_t authDataLength, authDataCount;
- uint64_t cryptDataLength, cryptDataCount;
- int blockIndex;
- uint8_t staging_block[CCM_CBC_BLOCK_LEN];
- uint8_t block[CCM_CBC_BLOCK_LEN];
- const uint8_t *nonce;
- int nonceLength; /* This one is in bytes, not bits! */
- /* AES state data */
- int rounds;
- uint32_t keysched[4*(RIJNDAEL_MAXNR+1)];
- };
- void AES_CBC_MAC_Init(void *);
- void AES_CBC_MAC_Setkey(void *, const uint8_t *, u_int);
- void AES_CBC_MAC_Reinit(void *, const uint8_t *, u_int);
- int AES_CBC_MAC_Update(void *, const void *, u_int);
- void AES_CBC_MAC_Final(uint8_t *, void *);
- #endif /* _CBC_CCM_H */
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