/*
   * Modified to interface to the Linux kernel
   * Copyright (c) 2009, Intel Corporation.
   *
   * This program is free software; you can redistribute it and/or modify it
   * under the terms and conditions of the GNU General Public License,
   * version 2, as published by the Free Software Foundation.
   *
   * This program is distributed in the hope it will be useful, but WITHOUT
   * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
   * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
   * more details.
   *
   * You should have received a copy of the GNU General Public License along with
   * this program; if not, write to the Free Software Foundation, Inc., 59 Temple
   * Place - Suite 330, Boston, MA 02111-1307 USA.
   */
  
  #ifndef __CRYPTO_VMAC_H
  #define __CRYPTO_VMAC_H
  
  /* --------------------------------------------------------------------------
   * VMAC and VHASH Implementation by Ted Krovetz (tdk@acm.org) and Wei Dai.
   * This implementation is herby placed in the public domain.
   * The authors offers no warranty. Use at your own risk.
   * Please send bug reports to the authors.
   * Last modified: 17 APR 08, 1700 PDT
   * ----------------------------------------------------------------------- */
  
  /*
   * User definable settings.
   */
  #define VMAC_TAG_LEN	64
  #define VMAC_KEY_SIZE	128/* Must be 128, 192 or 256			*/
  #define VMAC_KEY_LEN	(VMAC_KEY_SIZE/8)
  #define VMAC_NHBYTES	128/* Must 2^i for any 3 < i < 13 Standard = 128*/
  
  /*
   * This implementation uses u32 and u64 as names for unsigned 32-
   * and 64-bit integer types. These are defined in C99 stdint.h. The
   * following may need adaptation if you are not running a C99 or
   * Microsoft C environment.
   */
  struct vmac_ctx {
  	u64 nhkey[(VMAC_NHBYTES/8)+2*(VMAC_TAG_LEN/64-1)];
  	u64 polykey[2*VMAC_TAG_LEN/64];
  	u64 l3key[2*VMAC_TAG_LEN/64];
  	u64 polytmp[2*VMAC_TAG_LEN/64];
  	u64 cached_nonce[2];
  	u64 cached_aes[2];
  	int first_block_processed;
  };
  
  typedef u64 vmac_t;
  
  struct vmac_ctx_t {
  	struct crypto_cipher *child;
  	struct vmac_ctx __vmac_ctx;
  	u8 partial[VMAC_NHBYTES];	/* partial block */
  	int partial_size;		/* size of the partial block */
  };
  
  #endif /* __CRYPTO_VMAC_H */