padlock.h

00001 /**
00002  * \file padlock.h
00003  *
00004  * \brief VIA PadLock ACE for HW encryption/decryption supported by some
00005  *        processors
00006  *
00007  *  Copyright (C) 2006-2014, Brainspark B.V.
00008  *
00009  *  This file is part of PolarSSL (http://www.polarssl.org)
00010  *  Lead Maintainer: Paul Bakker <polarssl_maintainer at polarssl.org>
00011  *
00012  *  All rights reserved.
00013  *
00014  *  This program is free software; you can redistribute it and/or modify
00015  *  it under the terms of the GNU General Public License as published by
00016  *  the Free Software Foundation; either version 2 of the License, or
00017  *  (at your option) any later version.
00018  *
00019  *  This program is distributed in the hope that it will be useful,
00020  *  but WITHOUT ANY WARRANTY; without even the implied warranty of
00021  *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
00022  *  GNU General Public License for more details.
00023  *
00024  *  You should have received a copy of the GNU General Public License along
00025  *  with this program; if not, write to the Free Software Foundation, Inc.,
00026  *  51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
00027  */
00028 #ifndef POLARSSL_PADLOCK_H
00029 #define POLARSSL_PADLOCK_H
00030 
00031 #include "aes.h"
00032 
00033 #define POLARSSL_ERR_PADLOCK_DATA_MISALIGNED               -0x0030  /**< Input data should be aligned. */
00034 
00035 #if defined(POLARSSL_HAVE_ASM) && defined(__GNUC__) && defined(__i386__)
00036 
00037 #ifndef POLARSSL_HAVE_X86
00038 #define POLARSSL_HAVE_X86
00039 #endif
00040 
00041 #if defined(_MSC_VER) && !defined(EFIX64) && !defined(EFI32)
00042 #include <basetsd.h>
00043 typedef INT32 int32_t;
00044 #else
00045 #include <inttypes.h>
00046 #endif
00047 
00048 
00049 #define PADLOCK_RNG 0x000C
00050 #define PADLOCK_ACE 0x00C0
00051 #define PADLOCK_PHE 0x0C00
00052 #define PADLOCK_PMM 0x3000
00053 
00054 #define PADLOCK_ALIGN16(x) (uint32_t *) (16 + ((int32_t) x & ~15))
00055 
00056 #ifdef __cplusplus
00057 extern "C" {
00058 #endif
00059 
00060 /**
00061  * \brief          PadLock detection routine
00062  *
00063  * \param feature  The feature to detect
00064  *
00065  * \return         1 if CPU has support for the feature, 0 otherwise
00066  */
00067 int padlock_supports( int feature );
00068 
00069 /**
00070  * \brief          PadLock AES-ECB block en(de)cryption
00071  *
00072  * \param ctx      AES context
00073  * \param mode     AES_ENCRYPT or AES_DECRYPT
00074  * \param input    16-byte input block
00075  * \param output   16-byte output block
00076  *
00077  * \return         0 if success, 1 if operation failed
00078  */
00079 int padlock_xcryptecb( aes_context *ctx,
00080                        int mode,
00081                        const unsigned char input[16],
00082                        unsigned char output[16] );
00083 
00084 /**
00085  * \brief          PadLock AES-CBC buffer en(de)cryption
00086  *
00087  * \param ctx      AES context
00088  * \param mode     AES_ENCRYPT or AES_DECRYPT
00089  * \param length   length of the input data
00090  * \param iv       initialization vector (updated after use)
00091  * \param input    buffer holding the input data
00092  * \param output   buffer holding the output data
00093  *
00094  * \return         0 if success, 1 if operation failed
00095  */
00096 int padlock_xcryptcbc( aes_context *ctx,
00097                        int mode,
00098                        size_t length,
00099                        unsigned char iv[16],
00100                        const unsigned char *input,
00101                        unsigned char *output );
00102 
00103 #ifdef __cplusplus
00104 }
00105 #endif
00106 
00107 #endif /* HAVE_X86  */
00108 
00109 #endif /* padlock.h */
00110 
00111