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awilliam
GitHub Repository: awilliam/linux-vfio
 Path: blob/master/include/crypto/vmac.h
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/*

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 * Modified to interface to the Linux kernel

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 * Copyright (c) 2009, Intel Corporation.

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 *

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 * This program is free software; you can redistribute it and/or modify it

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 * under the terms and conditions of the GNU General Public License,

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 * version 2, as published by the Free Software Foundation.

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 *

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 * This program is distributed in the hope it will be useful, but WITHOUT

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 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or

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 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for

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 * more details.

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 *

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 * You should have received a copy of the GNU General Public License along with

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 * this program; if not, write to the Free Software Foundation, Inc., 59 Temple

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 * Place - Suite 330, Boston, MA 02111-1307 USA.

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 */

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#ifndef __CRYPTO_VMAC_H

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#define __CRYPTO_VMAC_H

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/* --------------------------------------------------------------------------

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 * VMAC and VHASH Implementation by Ted Krovetz ([email protected]) and Wei Dai.

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 * This implementation is herby placed in the public domain.

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 * The authors offers no warranty. Use at your own risk.

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 * Please send bug reports to the authors.

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 * Last modified: 17 APR 08, 1700 PDT

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 * ----------------------------------------------------------------------- */

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/*

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 * User definable settings.

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 */

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#define VMAC_TAG_LEN	64

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#define VMAC_KEY_SIZE	128/* Must be 128, 192 or 256			*/

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#define VMAC_KEY_LEN	(VMAC_KEY_SIZE/8)

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#define VMAC_NHBYTES	128/* Must 2^i for any 3 < i < 13 Standard = 128*/

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/*

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 * This implementation uses u32 and u64 as names for unsigned 32-

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 * and 64-bit integer types. These are defined in C99 stdint.h. The

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 * following may need adaptation if you are not running a C99 or

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 * Microsoft C environment.

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 */

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struct vmac_ctx {

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	u64 nhkey[(VMAC_NHBYTES/8)+2*(VMAC_TAG_LEN/64-1)];

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	u64 polykey[2*VMAC_TAG_LEN/64];

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	u64 l3key[2*VMAC_TAG_LEN/64];

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	u64 polytmp[2*VMAC_TAG_LEN/64];

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	u64 cached_nonce[2];

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	u64 cached_aes[2];

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	int first_block_processed;

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};

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typedef u64 vmac_t;

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struct vmac_ctx_t {

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	struct crypto_cipher *child;

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	struct vmac_ctx __vmac_ctx;

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};

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#endif /* __CRYPTO_VMAC_H */

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