| /** |
| * \file aesni.h |
| * |
| * \brief AES-NI for hardware AES acceleration on some Intel processors |
| * |
| * Copyright (C) 2006-2015, ARM Limited, All Rights Reserved |
| * SPDX-License-Identifier: Apache-2.0 |
| * |
| * Licensed under the Apache License, Version 2.0 (the "License"); you may |
| * not use this file except in compliance with the License. |
| * You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT |
| * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| * |
| * This file is part of mbed TLS (https://tls.mbed.org) |
| */ |
| #ifndef MBEDTLS_AESNI_H |
| #define MBEDTLS_AESNI_H |
| |
| #include "aes.h" |
| |
| #define MBEDTLS_AESNI_AES 0x02000000u |
| #define MBEDTLS_AESNI_CLMUL 0x00000002u |
| |
| #if defined(MBEDTLS_HAVE_ASM) && defined(__GNUC__) && \ |
| ( defined(__amd64__) || defined(__x86_64__) ) && \ |
| ! defined(MBEDTLS_HAVE_X86_64) |
| #define MBEDTLS_HAVE_X86_64 |
| #endif |
| |
| #if defined(MBEDTLS_HAVE_X86_64) |
| |
| #ifdef __cplusplus |
| extern "C" { |
| #endif |
| |
| /** |
| * \brief AES-NI features detection routine |
| * |
| * \param what The feature to detect |
| * (MBEDTLS_AESNI_AES or MBEDTLS_AESNI_CLMUL) |
| * |
| * \return 1 if CPU has support for the feature, 0 otherwise |
| */ |
| int mbedtls_aesni_has_support( unsigned int what ); |
| |
| /** |
| * \brief AES-NI AES-ECB block en(de)cryption |
| * |
| * \param ctx AES context |
| * \param mode MBEDTLS_AES_ENCRYPT or MBEDTLS_AES_DECRYPT |
| * \param input 16-byte input block |
| * \param output 16-byte output block |
| * |
| * \return 0 on success (cannot fail) |
| */ |
| int mbedtls_aesni_crypt_ecb( mbedtls_aes_context *ctx, |
| int mode, |
| const unsigned char input[16], |
| unsigned char output[16] ); |
| |
| /** |
| * \brief GCM multiplication: c = a * b in GF(2^128) |
| * |
| * \param c Result |
| * \param a First operand |
| * \param b Second operand |
| * |
| * \note Both operands and result are bit strings interpreted as |
| * elements of GF(2^128) as per the GCM spec. |
| */ |
| void mbedtls_aesni_gcm_mult( unsigned char c[16], |
| const unsigned char a[16], |
| const unsigned char b[16] ); |
| |
| /** |
| * \brief Compute decryption round keys from encryption round keys |
| * |
| * \param invkey Round keys for the equivalent inverse cipher |
| * \param fwdkey Original round keys (for encryption) |
| * \param nr Number of rounds (that is, number of round keys minus one) |
| */ |
| void mbedtls_aesni_inverse_key( unsigned char *invkey, |
| const unsigned char *fwdkey, int nr ); |
| |
| /** |
| * \brief Perform key expansion (for encryption) |
| * |
| * \param rk Destination buffer where the round keys are written |
| * \param key Encryption key |
| * \param bits Key size in bits (must be 128, 192 or 256) |
| * |
| * \return 0 if successful, or MBEDTLS_ERR_AES_INVALID_KEY_LENGTH |
| */ |
| int mbedtls_aesni_setkey_enc( unsigned char *rk, |
| const unsigned char *key, |
| size_t bits ); |
| |
| #ifdef __cplusplus |
| } |
| #endif |
| |
| #endif /* MBEDTLS_HAVE_X86_64 */ |
| |
| #endif /* MBEDTLS_AESNI_H */ |