1/* 2 * Modified to interface to the Linux kernel 3 * Copyright (c) 2009, Intel Corporation. 4 * 5 * This program is free software; you can redistribute it and/or modify it 6 * under the terms and conditions of the GNU General Public License, 7 * version 2, as published by the Free Software Foundation. 8 * 9 * This program is distributed in the hope it will be useful, but WITHOUT 10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or 11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for 12 * more details. 13 * 14 * You should have received a copy of the GNU General Public License along with 15 * this program; if not, write to the Free Software Foundation, Inc., 59 Temple 16 * Place - Suite 330, Boston, MA 02111-1307 USA. 17 */ 18 19#ifndef __CRYPTO_VMAC_H 20#define __CRYPTO_VMAC_H 21 22/* -------------------------------------------------------------------------- 23 * VMAC and VHASH Implementation by Ted Krovetz (tdk@acm.org) and Wei Dai. 24 * This implementation is herby placed in the public domain. 25 * The authors offers no warranty. Use at your own risk. 26 * Please send bug reports to the authors. 27 * Last modified: 17 APR 08, 1700 PDT 28 * ----------------------------------------------------------------------- */ 29 30/* 31 * User definable settings. 32 */ 33#define VMAC_TAG_LEN 64 34#define VMAC_KEY_SIZE 128/* Must be 128, 192 or 256 */ 35#define VMAC_KEY_LEN (VMAC_KEY_SIZE/8) 36#define VMAC_NHBYTES 128/* Must 2^i for any 3 < i < 13 Standard = 128*/ 37 38/* 39 * This implementation uses u32 and u64 as names for unsigned 32- 40 * and 64-bit integer types. These are defined in C99 stdint.h. The 41 * following may need adaptation if you are not running a C99 or 42 * Microsoft C environment. 43 */ 44struct vmac_ctx { 45 u64 nhkey[(VMAC_NHBYTES/8)+2*(VMAC_TAG_LEN/64-1)]; 46 u64 polykey[2*VMAC_TAG_LEN/64]; 47 u64 l3key[2*VMAC_TAG_LEN/64]; 48 u64 polytmp[2*VMAC_TAG_LEN/64]; 49 u64 cached_nonce[2]; 50 u64 cached_aes[2]; 51 int first_block_processed; 52}; 53 54typedef u64 vmac_t; 55 56struct vmac_ctx_t { 57 struct crypto_cipher *child; 58 struct vmac_ctx __vmac_ctx; 59 u8 partial[VMAC_NHBYTES]; /* partial block */ 60 int partial_size; /* size of the partial block */ 61}; 62 63#endif /* __CRYPTO_VMAC_H */ 64