padlock.h

00001 /**
00002  * \file padlock.h
00003  *
00004  * \brief VIA PadLock ACE for HW encryption/decryption supported by some
00005  *        processors
00006  *
00007  * \warning These functions are only for internal use by other library
00008  *          functions; you must not call them directly.
00009  */
00010 /*
00011  *  Copyright (C) 2006-2015, ARM Limited, All Rights Reserved
00012  *  SPDX-License-Identifier: Apache-2.0
00013  *
00014  *  Licensed under the Apache License, Version 2.0 (the "License"); you may
00015  *  not use this file except in compliance with the License.
00016  *  You may obtain a copy of the License at
00017  *
00018  *  http://www.apache.org/licenses/LICENSE-2.0
00019  *
00020  *  Unless required by applicable law or agreed to in writing, software
00021  *  distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
00022  *  WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
00023  *  See the License for the specific language governing permissions and
00024  *  limitations under the License.
00025  *
00026  *  This file is part of mbed TLS (https://tls.mbed.org)
00027  */
00028 #ifndef MBEDTLS_PADLOCK_H
00029 #define MBEDTLS_PADLOCK_H
00030 
00031 #if !defined(MBEDTLS_CONFIG_FILE)
00032 #include "mbedtls/config.h"
00033 #else
00034 #include MBEDTLS_CONFIG_FILE
00035 #endif
00036 
00037 #include "mbedtls/aes.h"
00038 
00039 #define MBEDTLS_ERR_PADLOCK_DATA_MISALIGNED               -0x0030  /**< Input data should be aligned. */
00040 
00041 #if defined(__has_feature)
00042 #if __has_feature(address_sanitizer)
00043 #define MBEDTLS_HAVE_ASAN
00044 #endif
00045 #endif
00046 
00047 /* Some versions of ASan result in errors about not enough registers */
00048 #if defined(MBEDTLS_HAVE_ASM) && defined(__GNUC__) && defined(__i386__) && \
00049     !defined(MBEDTLS_HAVE_ASAN)
00050 
00051 #ifndef MBEDTLS_HAVE_X86
00052 #define MBEDTLS_HAVE_X86
00053 #endif
00054 
00055 #include <stdint.h>
00056 
00057 #define MBEDTLS_PADLOCK_RNG 0x000C
00058 #define MBEDTLS_PADLOCK_ACE 0x00C0
00059 #define MBEDTLS_PADLOCK_PHE 0x0C00
00060 #define MBEDTLS_PADLOCK_PMM 0x3000
00061 
00062 #define MBEDTLS_PADLOCK_ALIGN16(x) (uint32_t *) (16 + ((int32_t) (x) & ~15))
00063 
00064 #ifdef __cplusplus
00065 extern "C" {
00066 #endif
00067 
00068 /**
00069  * \brief          Internal PadLock detection routine
00070  *
00071  * \note           This function is only for internal use by other library
00072  *                 functions; you must not call it directly.
00073  *
00074  * \param feature  The feature to detect
00075  *
00076  * \return         1 if CPU has support for the feature, 0 otherwise
00077  */
00078 int mbedtls_padlock_has_support( int feature );
00079 
00080 /**
00081  * \brief          Internal PadLock AES-ECB block en(de)cryption
00082  *
00083  * \note           This function is only for internal use by other library
00084  *                 functions; you must not call it directly.
00085  *
00086  * \param ctx      AES context
00087  * \param mode     MBEDTLS_AES_ENCRYPT or MBEDTLS_AES_DECRYPT
00088  * \param input    16-byte input block
00089  * \param output   16-byte output block
00090  *
00091  * \return         0 if success, 1 if operation failed
00092  */
00093 int mbedtls_padlock_xcryptecb( mbedtls_aes_context *ctx,
00094                                int mode,
00095                                const unsigned char input[16],
00096                                unsigned char output[16] );
00097 
00098 /**
00099  * \brief          Internal PadLock AES-CBC buffer en(de)cryption
00100  *
00101  * \note           This function is only for internal use by other library
00102  *                 functions; you must not call it directly.
00103  *
00104  * \param ctx      AES context
00105  * \param mode     MBEDTLS_AES_ENCRYPT or MBEDTLS_AES_DECRYPT
00106  * \param length   length of the input data
00107  * \param iv       initialization vector (updated after use)
00108  * \param input    buffer holding the input data
00109  * \param output   buffer holding the output data
00110  *
00111  * \return         0 if success, 1 if operation failed
00112  */
00113 int mbedtls_padlock_xcryptcbc( mbedtls_aes_context *ctx,
00114                                int mode,
00115                                size_t length,
00116                                unsigned char iv[16],
00117                                const unsigned char *input,
00118                                unsigned char *output );
00119 
00120 #ifdef __cplusplus
00121 }
00122 #endif
00123 
00124 #endif /* HAVE_X86  */
00125 
00126 #endif /* padlock.h */