common/mbedtls/padlock.h

   1 /**
   2  * \file padlock.h
   3  *
   4  * \brief VIA PadLock ACE for HW encryption/decryption supported by some
   5  *        processors
   6  *
   7  * \warning These functions are only for internal use by other library
   8  *          functions; you must not call them directly.
   9  */
  10 /*
  11  *  Copyright The Mbed TLS Contributors
  12  *  SPDX-License-Identifier: Apache-2.0
  13  *
  14  *  Licensed under the Apache License, Version 2.0 (the "License"); you may
  15  *  not use this file except in compliance with the License.
  16  *  You may obtain a copy of the License at
  17  *
  18  *  http://www.apache.org/licenses/LICENSE-2.0
  19  *
  20  *  Unless required by applicable law or agreed to in writing, software
  21  *  distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
  22  *  WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  23  *  See the License for the specific language governing permissions and
  24  *  limitations under the License.
  25  */
  26 #ifndef MBEDTLS_PADLOCK_H
  27 #define MBEDTLS_PADLOCK_H
  28
  29 #if !defined(MBEDTLS_CONFIG_FILE)
  30 #include "mbedtls/config.h"
  31 #else
  32 #include MBEDTLS_CONFIG_FILE
  33 #endif
  34
  35 #include "mbedtls/aes.h"
  36
  37 #define MBEDTLS_ERR_PADLOCK_DATA_MISALIGNED               -0x0030  /**< Input data should be aligned. */
  38
  39 #if defined(__has_feature)
  40 #if __has_feature(address_sanitizer)
  41 #define MBEDTLS_HAVE_ASAN
  42 #endif
  43 #endif
  44
  45 /* Some versions of ASan result in errors about not enough registers */
  46 #if defined(MBEDTLS_HAVE_ASM) && defined(__GNUC__) && defined(__i386__) && \
  47     !defined(MBEDTLS_HAVE_ASAN)
  48
  49 #ifndef MBEDTLS_HAVE_X86
  50 #define MBEDTLS_HAVE_X86
  51 #endif
  52
  53 #include <stdint.h>
  54
  55 #define MBEDTLS_PADLOCK_RNG 0x000C
  56 #define MBEDTLS_PADLOCK_ACE 0x00C0
  57 #define MBEDTLS_PADLOCK_PHE 0x0C00
  58 #define MBEDTLS_PADLOCK_PMM 0x3000
  59
  60 #define MBEDTLS_PADLOCK_ALIGN16(x) (uint32_t *) (16 + ((int32_t) (x) & ~15))
  61
  62 #ifdef __cplusplus
  63 extern "C" {
  64 #endif
  65
  66 /**
  67  * \brief          Internal PadLock detection routine
  68  *
  69  * \note           This function is only for internal use by other library
  70  *                 functions; you must not call it directly.
  71  *
  72  * \param feature  The feature to detect
  73  *
  74  * \return         1 if CPU has support for the feature, 0 otherwise
  75  */
  76 int mbedtls_padlock_has_support(int feature);
  77
  78 /**
  79  * \brief          Internal PadLock AES-ECB block en(de)cryption
  80  *
  81  * \note           This function is only for internal use by other library
  82  *                 functions; you must not call it directly.
  83  *
  84  * \param ctx      AES context
  85  * \param mode     MBEDTLS_AES_ENCRYPT or MBEDTLS_AES_DECRYPT
  86  * \param input    16-byte input block
  87  * \param output   16-byte output block
  88  *
  89  * \return         0 if success, 1 if operation failed
  90  */
  91 int mbedtls_padlock_xcryptecb(mbedtls_aes_context *ctx,
  92                               int mode,
  93                               const unsigned char input[16],
  94                               unsigned char output[16]);
  95
  96 /**
  97  * \brief          Internal PadLock AES-CBC buffer en(de)cryption
  98  *
  99  * \note           This function is only for internal use by other library
 100  *                 functions; you must not call it directly.
 101  *
 102  * \param ctx      AES context
 103  * \param mode     MBEDTLS_AES_ENCRYPT or MBEDTLS_AES_DECRYPT
 104  * \param length   length of the input data
 105  * \param iv       initialization vector (updated after use)
 106  * \param input    buffer holding the input data
 107  * \param output   buffer holding the output data
 108  *
 109  * \return         0 if success, 1 if operation failed
 110  */
 111 int mbedtls_padlock_xcryptcbc(mbedtls_aes_context *ctx,
 112                               int mode,
 113                               size_t length,
 114                               unsigned char iv[16],
 115                               const unsigned char *input,
 116                               unsigned char *output);
 117
 118 #ifdef __cplusplus
 119 }
 120 #endif
 121
 122 #endif /* HAVE_X86  */
 123
 124 #endif /* padlock.h */