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