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feat(mbedtls): modify code to support ESP8266

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It is that maybe less modification working on the components is better, so I just modified the platform
code of AES, SHA and so on.

ESP8266 has no real hardware AES, SHA or bignum peripheral, but some method can speed up the process of part
of upper algorithm, so I also added the platform code of AES, SHA, bignum, ARC, MD5.

ESP8266 has no platform of bignum, so users should not enable the bignum hardware at "menuconfig".
This commit is contained in:
dongheng
2019-09-19 11:49:42 +08:00
parent 35d8262b25
commit 5f2b5eafcf
42 changed files with 625 additions and 4023 deletions
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78
components/mbedtls/port/include/mbedtls/bignum.h
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// Copyright 2015-2016 Espressif Systems (Shanghai) PTE LTD
//
// 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.
#ifndef __ESP_MBEDTLS_BIGNUM_H__
#define __ESP_MBEDTLS_BIGNUM_H__
#include_next "mbedtls/bignum.h"
/**
* This is a wrapper for the main mbedtls/bignum.h. This wrapper
* provides a few additional ESP32-only functions.
*
* This is because we don't set MBEDTLS_BIGNUM_ALT in the same way we
* do for AES, SHA, etc. Because we still use most of the bignum.h
* implementation and just replace a few hardware accelerated
* functions (see MBEDTLS_MPI_EXP_MOD_ALT & MBEDTLS_MPI_MUL_MPI_ALT in
* esp_config.h).
*
* @note Unlike the other hardware accelerator support functions in esp32/hwcrypto, there is no
* generic "hwcrypto/bignum.h" header for using these functions without mbedTLS. The reason for this
* is that all of the function implementations depend strongly upon the mbedTLS MPI implementation.
*/
/**
* @brief Lock access to RSA Accelerator (MPI/bignum operations)
*
* RSA Accelerator hardware unit can only be used by one
* consumer at a time.
*
* @note This function is non-recursive (do not call it twice from the
* same task.)
*
* @note You do not need to call this if you are using the mbedTLS bignum.h
* API or esp_mpi_xxx functions. This function is only needed if you
* want to call ROM RSA functions or access the registers directly.
*
*/
void esp_mpi_acquire_hardware(void);
/**
* @brief Unlock access to RSA Accelerator (MPI/bignum operations)
*
* Has to be called once for each call to esp_mpi_acquire_hardware().
*
* @note You do not need to call this if you are using the mbedTLS bignum.h
* API or esp_mpi_xxx functions. This function is only needed if you
* want to call ROM RSA functions or access the registers directly.
*/
void esp_mpi_release_hardware(void);
/* @brief MPI modular mupltiplication function
*
* Calculates Z = (X * Y) mod M using MPI hardware acceleration.
*
* This is not part of the standard mbedTLS bignum API.
*
* @note All of X, Y & Z should be less than 4096 bit long or an error is returned.
*
* @param Z Result bignum, should be pre-initialised with mbedtls_mpi_init().
* @param X First multiplication argument.
* @param Y Second multiplication argument.
* @param M Modulus value for result.
*
* @return 0 on success, mbedTLS MPI error codes on failure.
*/
int esp_mpi_mul_mpi_mod(mbedtls_mpi *Z, const mbedtls_mpi *X, const mbedtls_mpi *Y, const mbedtls_mpi *M);
#endif