Differential D18592 Diff 52132 sys/opencrypto/cbc_mac.h

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sys/opencrypto/cbc_mac.h

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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 _CCM_H
				# define _CCM_H
				cemUnsubmitted Not Done Inline Actions This doesn't match the header name and may conflict with other headers. I'd suggest just using `#pragma once`, but if you prefer the macro approach, use `_CBC_MAC_H_` or whatever. cem: This doesn't match the header name and may conflict with other headers. I'd suggest just using…
				sefAuthorUnsubmitted Done Inline Actions Ah, missed from my rename. Easily changed. sef: Ah, missed from my rename. Easily changed.

				# 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;
				int tagLength;
				int blockIndex;
				uint8_t staging_block[CCM_CBC_BLOCK_LEN];
				uint8_t block[CCM_CBC_BLOCK_LEN];
				const uint8_t *aes_key;
				cemUnsubmitted Done Inline Actions `aes_key` isn't used either :-) cem: `aes_key` isn't used either :-)
				int keyLength; /* This will be in bits, not bytes! */
				cemUnsubmitted Done Inline Actions `aes_key` and `keyLength` are never used. cem: `aes_key` and `keyLength` are never used.
				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(struct aes_cbc_mac_ctx *);
				void AES_CBC_MAC_Setkey(struct aes_cbc_mac_ctx , const uint8_t , uint16_t);
				void AES_CBC_MAC_Reinit(struct aes_cbc_mac_ctx , const uint8_t , uint16_t);
				int AES_CBC_MAC_Update(struct aes_cbc_mac_ctx , const uint8_t , uint16_t);
				void AES_CBC_MAC_Final(uint8_t , struct aes_cbc_mac_ctx );

				#endif /* _CCM_H */