src/libpolarssl/padlock.h

   1 /**
   2  * \file padlock.h
   3  *
   4  * \brief VIA PadLock ACE for HW encryption/decryption supported by some processors
   5  *
   6  *  Copyright (C) 2006-2010, Brainspark B.V.
   7  *
   8  *  This file is part of PolarSSL (http://www.polarssl.org)
   9  *  Lead Maintainer: Paul Bakker <polarssl_maintainer at polarssl.org>
  10  *
  11  *  All rights reserved.
  12  *
  13  *  This program is free software; you can redistribute it and/or modify
  14  *  it under the terms of the GNU General Public License as published by
  15  *  the Free Software Foundation; either version 2 of the License, or
  16  *  (at your option) any later version.
  17  *
  18  *  This program is distributed in the hope that it will be useful,
  19  *  but WITHOUT ANY WARRANTY; without even the implied warranty of
  20  *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  21  *  GNU General Public License for more details.
  22  *
  23  *  You should have received a copy of the GNU General Public License along
  24  *  with this program; if not, write to the Free Software Foundation, Inc.,
  25  *  51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
  26  */
  27 #ifndef POLARSSL_PADLOCK_H
  28 #define POLARSSL_PADLOCK_H
  29
  30 #include "aes.h"
  31
  32 #define POLARSSL_ERR_PADLOCK_DATA_MISALIGNED               -0x0030  /**< Input data should be aligned. */
  33
  34 #if defined(POLARSSL_HAVE_ASM) && defined(__GNUC__) && defined(__i386__)
  35
  36 #ifndef POLARSSL_HAVE_X86
  37 #define POLARSSL_HAVE_X86
  38 #endif
  39
  40 #ifdef _MSC_VER
  41 #include <basetsd.h>
  42 typedef INT32 int32_t;
  43 #else
  44 #include <inttypes.h>
  45 #endif
  46
  47
  48 #define PADLOCK_RNG 0x000C
  49 #define PADLOCK_ACE 0x00C0
  50 #define PADLOCK_PHE 0x0C00
  51 #define PADLOCK_PMM 0x3000
  52
  53 #define PADLOCK_ALIGN16(x) (uint32_t *) (16 + ((int32_t) x & ~15))
  54
  55 #ifdef __cplusplus
  56 extern "C" {
  57 #endif
  58
  59 /**
  60  * \brief          PadLock detection routine
  61  *
  62  * \param          The feature to detect
  63  *
  64  * \return         1 if CPU has support for the feature, 0 otherwise
  65  */
  66 int padlock_supports( int feature );
  67
  68 /**
  69  * \brief          PadLock AES-ECB block en(de)cryption
  70  *
  71  * \param ctx      AES context
  72  * \param mode     AES_ENCRYPT or AES_DECRYPT
  73  * \param input    16-byte input block
  74  * \param output   16-byte output block
  75  *
  76  * \return         0 if success, 1 if operation failed
  77  */
  78 int padlock_xcryptecb( aes_context *ctx,
  79                        int mode,
  80                        const unsigned char input[16],
  81                        unsigned char output[16] );
  82
  83 /**
  84  * \brief          PadLock AES-CBC buffer en(de)cryption
  85  *
  86  * \param ctx      AES context
  87  * \param mode     AES_ENCRYPT or AES_DECRYPT
  88  * \param length   length of the input data
  89  * \param iv       initialization vector (updated after use)
  90  * \param input    buffer holding the input data
  91  * \param output   buffer holding the output data
  92  *
  93  * \return         0 if success, 1 if operation failed
  94  */
  95 int padlock_xcryptcbc( aes_context *ctx,
  96                        int mode,
  97                        size_t length,
  98                        unsigned char iv[16],
  99                        const unsigned char *input,
 100                        unsigned char *output );
 101
 102 #ifdef __cplusplus
 103 }
 104 #endif
 105
 106 #endif /* HAVE_X86  */
 107
 108 #endif /* padlock.h */