src/libpolarssl/padlock.h

   1 /**
   2  * \file padlock.h
   3  *
   4  * \brief VIA PadLock ACE for HW encryption/decryption supported by some
   5  *        processors
   6  *
   7  *  Copyright (C) 2006-2014, Brainspark B.V.
   8  *
   9  *  This file is part of PolarSSL (http://www.polarssl.org)
  10  *  Lead Maintainer: Paul Bakker <polarssl_maintainer at polarssl.org>
  11  *
  12  *  All rights reserved.
  13  *
  14  *  This program is free software; you can redistribute it and/or modify
  15  *  it under the terms of the GNU General Public License as published by
  16  *  the Free Software Foundation; either version 2 of the License, or
  17  *  (at your option) any later version.
  18  *
  19  *  This program is distributed in the hope that it will be useful,
  20  *  but WITHOUT ANY WARRANTY; without even the implied warranty of
  21  *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  22  *  GNU General Public License for more details.
  23  *
  24  *  You should have received a copy of the GNU General Public License along
  25  *  with this program; if not, write to the Free Software Foundation, Inc.,
  26  *  51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
  27  */
  28 #ifndef POLARSSL_PADLOCK_H
  29 #define POLARSSL_PADLOCK_H
  30
  31 #include "aes.h"
  32
  33 #define POLARSSL_ERR_PADLOCK_DATA_MISALIGNED               -0x0030  /**< Input data should be aligned. */
  34
  35 #if defined(POLARSSL_HAVE_ASM) && defined(__GNUC__) && defined(__i386__)
  36
  37 #ifndef POLARSSL_HAVE_X86
  38 #define POLARSSL_HAVE_X86
  39 #endif
  40
  41 #if defined(_MSC_VER) && !defined(EFIX64) && !defined(EFI32)
  42 #include <basetsd.h>
  43 typedef INT32 int32_t;
  44 #else
  45 #include <inttypes.h>
  46 #endif
  47
  48
  49 #define PADLOCK_RNG 0x000C
  50 #define PADLOCK_ACE 0x00C0
  51 #define PADLOCK_PHE 0x0C00
  52 #define PADLOCK_PMM 0x3000
  53
  54 #define PADLOCK_ALIGN16(x) (uint32_t *) (16 + ((int32_t) x & ~15))
  55
  56 #ifdef __cplusplus
  57 extern "C" {
  58 #endif
  59
  60 /**
  61  * \brief          PadLock detection routine
  62  *
  63  * \param feature  The feature to detect
  64  *
  65  * \return         1 if CPU has support for the feature, 0 otherwise
  66  */
  67 int padlock_supports( int feature );
  68
  69 /**
  70  * \brief          PadLock AES-ECB block en(de)cryption
  71  *
  72  * \param ctx      AES context
  73  * \param mode     AES_ENCRYPT or AES_DECRYPT
  74  * \param input    16-byte input block
  75  * \param output   16-byte output block
  76  *
  77  * \return         0 if success, 1 if operation failed
  78  */
  79 int padlock_xcryptecb( aes_context *ctx,
  80                        int mode,
  81                        const unsigned char input[16],
  82                        unsigned char output[16] );
  83
  84 /**
  85  * \brief          PadLock AES-CBC buffer en(de)cryption
  86  *
  87  * \param ctx      AES context
  88  * \param mode     AES_ENCRYPT or AES_DECRYPT
  89  * \param length   length of the input data
  90  * \param iv       initialization vector (updated after use)
  91  * \param input    buffer holding the input data
  92  * \param output   buffer holding the output data
  93  *
  94  * \return         0 if success, 1 if operation failed
  95  */
  96 int padlock_xcryptcbc( aes_context *ctx,
  97                        int mode,
  98                        size_t length,
  99                        unsigned char iv[16],
 100                        const unsigned char *input,
 101                        unsigned char *output );
 102
 103 #ifdef __cplusplus
 104 }
 105 #endif
 106
 107 #endif /* HAVE_X86  */
 108
 109 #endif /* padlock.h */