reactos/sdk/include/reactos/libs/mbedtls/aesni.h

   1 /**
   2  * \file aesni.h
   3  *
   4  * \brief AES-NI for hardware AES acceleration on some Intel processors
   5  *
   6  *  Copyright (C) 2006-2015, ARM Limited, All Rights Reserved
   7  *  SPDX-License-Identifier: GPL-2.0
   8  *
   9  *  This program is free software; you can redistribute it and/or modify
  10  *  it under the terms of the GNU General Public License as published by
  11  *  the Free Software Foundation; either version 2 of the License, or
  12  *  (at your option) any later version.
  13  *
  14  *  This program is distributed in the hope that it will be useful,
  15  *  but WITHOUT ANY WARRANTY; without even the implied warranty of
  16  *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  17  *  GNU General Public License for more details.
  18  *
  19  *  You should have received a copy of the GNU General Public License along
  20  *  with this program; if not, write to the Free Software Foundation, Inc.,
  21  *  51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
  22  *
  23  *  This file is part of mbed TLS (https://tls.mbed.org)
  24  */
  25 #ifndef MBEDTLS_AESNI_H
  26 #define MBEDTLS_AESNI_H
  27
  28 #include "aes.h"
  29
  30 #define MBEDTLS_AESNI_AES      0x02000000u
  31 #define MBEDTLS_AESNI_CLMUL    0x00000002u
  32
  33 #if defined(MBEDTLS_HAVE_ASM) && defined(__GNUC__) &&  \
  34     ( defined(__amd64__) || defined(__x86_64__) )   &&  \
  35     ! defined(MBEDTLS_HAVE_X86_64)
  36 #define MBEDTLS_HAVE_X86_64
  37 #endif
  38
  39 #if defined(MBEDTLS_HAVE_X86_64)
  40
  41 #ifdef __cplusplus
  42 extern "C" {
  43 #endif
  44
  45 /**
  46  * \brief          AES-NI features detection routine
  47  *
  48  * \param what     The feature to detect
  49  *                 (MBEDTLS_AESNI_AES or MBEDTLS_AESNI_CLMUL)
  50  *
  51  * \return         1 if CPU has support for the feature, 0 otherwise
  52  */
  53 int mbedtls_aesni_has_support( unsigned int what );
  54
  55 /**
  56  * \brief          AES-NI AES-ECB block en(de)cryption
  57  *
  58  * \param ctx      AES context
  59  * \param mode     MBEDTLS_AES_ENCRYPT or MBEDTLS_AES_DECRYPT
  60  * \param input    16-byte input block
  61  * \param output   16-byte output block
  62  *
  63  * \return         0 on success (cannot fail)
  64  */
  65 int mbedtls_aesni_crypt_ecb( mbedtls_aes_context *ctx,
  66                      int mode,
  67                      const unsigned char input[16],
  68                      unsigned char output[16] );
  69
  70 /**
  71  * \brief          GCM multiplication: c = a * b in GF(2^128)
  72  *
  73  * \param c        Result
  74  * \param a        First operand
  75  * \param b        Second operand
  76  *
  77  * \note           Both operands and result are bit strings interpreted as
  78  *                 elements of GF(2^128) as per the GCM spec.
  79  */
  80 void mbedtls_aesni_gcm_mult( unsigned char c[16],
  81                      const unsigned char a[16],
  82                      const unsigned char b[16] );
  83
  84 /**
  85  * \brief           Compute decryption round keys from encryption round keys
  86  *
  87  * \param invkey    Round keys for the equivalent inverse cipher
  88  * \param fwdkey    Original round keys (for encryption)
  89  * \param nr        Number of rounds (that is, number of round keys minus one)
  90  */
  91 void mbedtls_aesni_inverse_key( unsigned char *invkey,
  92                         const unsigned char *fwdkey, int nr );
  93
  94 /**
  95  * \brief           Perform key expansion (for encryption)
  96  *
  97  * \param rk        Destination buffer where the round keys are written
  98  * \param key       Encryption key
  99  * \param bits      Key size in bits (must be 128, 192 or 256)
 100  *
 101  * \return          0 if successful, or MBEDTLS_ERR_AES_INVALID_KEY_LENGTH
 102  */
 103 int mbedtls_aesni_setkey_enc( unsigned char *rk,
 104                       const unsigned char *key,
 105                       size_t bits );
 106
 107 #ifdef __cplusplus
 108 }
 109 #endif
 110
 111 #endif /* MBEDTLS_HAVE_X86_64 */
 112
 113 #endif /* MBEDTLS_AESNI_H */