482 lines
20 KiB
C
482 lines
20 KiB
C
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/**
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* Copyright (c) 2018 - 2020, Nordic Semiconductor ASA
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*
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without modification,
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* are permitted provided that the following conditions are met:
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*
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* 1. Redistributions of source code must retain the above copyright notice, this
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* list of conditions and the following disclaimer.
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*
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* 2. Redistributions in binary form, except as embedded into a Nordic
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* Semiconductor ASA integrated circuit in a product or a software update for
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* such product, must reproduce the above copyright notice, this list of
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* conditions and the following disclaimer in the documentation and/or other
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* materials provided with the distribution.
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*
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* 3. Neither the name of Nordic Semiconductor ASA nor the names of its
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* contributors may be used to endorse or promote products derived from this
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* software without specific prior written permission.
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*
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* 4. This software, with or without modification, must only be used with a
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* Nordic Semiconductor ASA integrated circuit.
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*
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* 5. Any software provided in binary form under this license must not be reverse
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* engineered, decompiled, modified and/or disassembled.
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*
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* THIS SOFTWARE IS PROVIDED BY NORDIC SEMICONDUCTOR ASA "AS IS" AND ANY EXPRESS
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* OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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* OF MERCHANTABILITY, NONINFRINGEMENT, AND FITNESS FOR A PARTICULAR PURPOSE ARE
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* DISCLAIMED. IN NO EVENT SHALL NORDIC SEMICONDUCTOR ASA OR CONTRIBUTORS BE
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* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE
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* GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
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* OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*
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*/
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#ifndef NRF_CRYPTO_AES_H__
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#define NRF_CRYPTO_AES_H__
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/** @file
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*
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* @defgroup nrf_crypto_aes AES related functions
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* @{
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* @ingroup nrf_crypto
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*
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* @brief Provides AES related functionality through nrf_crypto.
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*/
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#include "sdk_common.h"
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#if NRF_MODULE_ENABLED(NRF_CRYPTO) || defined(__SDK_DOXYGEN__)
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#include <stdint.h>
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#include "nrf_crypto_types.h"
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#include "nrf_crypto_aes_shared.h"
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#include "nrf_crypto_aes_backend.h"
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#ifdef __cplusplus
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extern "C" {
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#endif
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/**@brief External variable declaration to the info structure for AES CBC mode with a 128-bit key.
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* No padding.
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*
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* @note The variable is defined in the nrf_crypto backend that is
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* enabled in the @c sdk_config file.
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*
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*/
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extern const nrf_crypto_aes_info_t g_nrf_crypto_aes_cbc_128_info;
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/**@brief External variable declaration to the info structure for AES CBC mode with a 192-bit key.
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* No padding.
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*
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* @note The variable is defined in the nrf_crypto backend that is
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* enabled in the @c sdk_config file.
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*
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*/
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extern const nrf_crypto_aes_info_t g_nrf_crypto_aes_cbc_192_info;
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/**@brief External variable declaration to the info structure for AES CBC mode with a 256-bit key.
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* No padding.
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*
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* @note The variable is defined in the nrf_crypto backend that is
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* enabled in the @c sdk_config file.
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*
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*/
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extern const nrf_crypto_aes_info_t g_nrf_crypto_aes_cbc_256_info;
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/**@brief External variable declaration to the info structure for AES CBC mode with a 128-bit key.
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* Padding pkcs7 enabled.
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*
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* @note The variable is defined in the nrf_crypto backend that is
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* enabled in the @c sdk_config file.
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*
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*/
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extern const nrf_crypto_aes_info_t g_nrf_crypto_aes_cbc_128_pad_pkcs7_info;
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/**@brief External variable declaration to the info structure for AES CBC mode with a 192-bit key.
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* Padding pkcs7 enabled.
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*
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* @note The variable is defined in the nrf_crypto backend that is
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* enabled in the @c sdk_config file.
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*
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*/
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extern const nrf_crypto_aes_info_t g_nrf_crypto_aes_cbc_192_pad_pkcs7_info;
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/**@brief External variable declaration to the info structure for AES CBC mode with a 256-bit key.
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* Padding pkcs7 enabled.
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*
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* @note The variable is defined in the nrf_crypto backend that is
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* enabled in the @c sdk_config file.
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*
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*/
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extern const nrf_crypto_aes_info_t g_nrf_crypto_aes_cbc_256_pad_pkcs7_info;
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/**@brief External variable declaration to the info structure for AES CTR mode with a 128-bit key.
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*
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* @note The variable is defined in the nrf_crypto backend that is
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* enabled in the @c sdk_config file.
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*
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*/
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extern const nrf_crypto_aes_info_t g_nrf_crypto_aes_ctr_128_info;
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/**@brief External variable declaration to the info structure for AES CTR mode with a 192-bit key.
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*
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* @note The variable is defined in the nrf_crypto backend that is
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* enabled in the @c sdk_config file.
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*
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*/
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extern const nrf_crypto_aes_info_t g_nrf_crypto_aes_ctr_192_info;
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/**@brief External variable declaration to the info structure for AES CTR mode with a 256-bit key.
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*
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* @note The variable is defined in the nrf_crypto backend that is
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* enabled in the @c sdk_config file.
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*
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*/
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extern const nrf_crypto_aes_info_t g_nrf_crypto_aes_ctr_256_info;
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/**@brief External variable declaration to the info structure for AES CFB mode with a 128-bit key.
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*
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* @note The variable is defined in the nrf_crypto backend that is
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* enabled in the @c sdk_config file.
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*
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*/
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extern const nrf_crypto_aes_info_t g_nrf_crypto_aes_cfb_128_info;
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/**@brief External variable declaration to the info structure for AES CFB mode with a 192-bit key.
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*
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* @note The variable is defined in the nrf_crypto backend that is
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* enabled in the @c sdk_config file.
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*
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*/
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extern const nrf_crypto_aes_info_t g_nrf_crypto_aes_cfb_192_info;
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/**@brief External variable declaration to the info structure for AES CFB mode with a 256-bit key.
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*
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* @note The variable is defined in the nrf_crypto backend that is
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* enabled in the @c sdk_config file.
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*
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*/
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extern const nrf_crypto_aes_info_t g_nrf_crypto_aes_cfb_256_info;
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/**@brief External variable declaration to the info structure for AES ECB mode with a 128-bit key.
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* No padding.
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*
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* @note The variable is defined in the nrf_crypto backend that is
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* enabled in the @c sdk_config file.
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*
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*/
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extern const nrf_crypto_aes_info_t g_nrf_crypto_aes_ecb_128_info;
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/**@brief External variable declaration to the info structure for AES ECB mode with a 192-bit key.
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* No padding.
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*
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* @note The variable is defined in the nrf_crypto backend that is
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* enabled in the @c sdk_config file.
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*
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*/
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extern const nrf_crypto_aes_info_t g_nrf_crypto_aes_ecb_192_info;
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/**@brief External variable declaration to the info structure for AES ECB mode with a 256-bit key.
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* No padding.
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*
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* @note The variable is defined in the nrf_crypto backend that is
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* enabled in the @c sdk_config file.
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*
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*/
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extern const nrf_crypto_aes_info_t g_nrf_crypto_aes_ecb_256_info;
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/**@brief External variable declaration to the info structure for AES ECB mode with a 128-bit key.
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* Padding pkcs7 enabled.
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*
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* @note The variable is defined in the nrf_crypto backend that is
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* enabled in the @c sdk_config file.
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*
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*/
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extern const nrf_crypto_aes_info_t g_nrf_crypto_aes_ecb_128_pad_pkcs7_info;
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/**@brief External variable declaration to the info structure for AES ECB mode with a 192-bit key.
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* Padding pkcs7 enabled.
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*
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* @note The variable is defined in the nrf_crypto backend that is
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* enabled in the @c sdk_config file.
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*
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*/
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extern const nrf_crypto_aes_info_t g_nrf_crypto_aes_ecb_192_pad_pkcs7_info;
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/**@brief External variable declaration to the info structure for AES ECB mode with a 256-bit key.
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* Padding pkcs7 enabled.
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*
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* @note The variable is defined in the nrf_crypto backend that is
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* enabled in the @c sdk_config file.
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*
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*/
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extern const nrf_crypto_aes_info_t g_nrf_crypto_aes_ecb_256_pad_pkcs7_info;
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/**@brief External variable declaration to the info structure for AES CBC MAC mode with a 128-bit
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* key.
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*
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* @note The variable is defined in the nrf_crypto backend that is
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* enabled in the @c sdk_config file.
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*
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*/
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extern const nrf_crypto_aes_info_t g_nrf_crypto_aes_cbc_mac_128_info;
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/**@brief External variable declaration to the info structure for AES CBC MAC mode with a 192-bit
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* key.
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*
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* @note The variable is defined in the nrf_crypto backend that is
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* enabled in the @c sdk_config file.
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*
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*/
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extern const nrf_crypto_aes_info_t g_nrf_crypto_aes_cbc_mac_192_info;
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/**@brief External variable declaration to the info structure for AES CBC MAC mode with a 256-bit
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* key.
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*
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* @note The variable is defined in the nrf_crypto backend that is
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* enabled in the @c sdk_config file.
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*
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*/
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extern const nrf_crypto_aes_info_t g_nrf_crypto_aes_cbc_mac_256_info;
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/**@brief External variable declaration to the info structure for AES CBC MAC mode with a 128-bit
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* key.
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* Padding pkcs7 enabled.
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*
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* @note The variable is defined in the nrf_crypto backend that is
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* enabled in the @c sdk_config file.
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*
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*/
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extern const nrf_crypto_aes_info_t g_nrf_crypto_aes_cbc_mac_128_pad_pkcs7_info;
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/**@brief External variable declaration to the info structure for AES CBC MAC mode with a 192-bit
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* key.
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* Padding pkcs7 enabled.
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*
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* @note The variable is defined in the nrf_crypto backend that is
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* enabled in the @c sdk_config file.
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*
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*/
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extern const nrf_crypto_aes_info_t g_nrf_crypto_aes_cbc_mac_192_pad_pkcs7_info;
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/**@brief External variable declaration to the info structure for AES CBC MAC mode with a 256-bit
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* key.
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* Padding pkcs7 enabled.
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*
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* @note The variable is defined in the nrf_crypto backend that is
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* enabled in the @c sdk_config file.
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*
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*/
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extern const nrf_crypto_aes_info_t g_nrf_crypto_aes_cbc_mac_256_pad_pkcs7_info;
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/**@brief External variable declaration to the info structure for AES CMAC mode with a 128-bit key.
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*
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* @note The variable is defined in the nrf_crypto backend that is
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* enabled in the @c sdk_config file.
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*
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*/
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extern const nrf_crypto_aes_info_t g_nrf_crypto_aes_cmac_128_info;
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/**@brief External variable declaration to the info structure for AES CMAC mode with a 192-bit key.
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*
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* @note The variable is defined in the nrf_crypto backend that is
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* enabled in the @c sdk_config file.
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*
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*/
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extern const nrf_crypto_aes_info_t g_nrf_crypto_aes_cmac_192_info;
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/**@brief External variable declaration to the info structure for AES CMAC mode with a 256-bit key.
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*
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* @note The variable is defined in the nrf_crypto backend that is
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* enabled in the @c sdk_config file.
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*
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*/
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extern const nrf_crypto_aes_info_t g_nrf_crypto_aes_cmac_256_info;
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/**
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* @brief Context type for AES.
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*
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* @note The size of this type is scaled for the largest AES backend context that is
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* enabled in @ref sdk_config.
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*/
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typedef nrf_crypto_backend_aes_context_t nrf_crypto_aes_context_t;
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/**@brief Function for initializing the AES context.
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*
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* @param[in] p_context Pointer to the context object. It must be a context type associated
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* with the object provided in the p_info parameter or other memory
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* that can hold that context type.
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* @param[in] p_info Pointer to structure holding information about: selected AES mode,
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* key size, and padding.
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* @param[in] operation Parameter indicating whether an encrypt (NRF_CRYPTO_ENCRYPT),
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* a decrypt (NRF_CRYPTO_DECRYPT) or MAC calculation
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* (NRF_CRYPTO_MAC_CALCULATE) operation shall be performed.
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*
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* @return NRF_SUCCESS on success.
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*/
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ret_code_t nrf_crypto_aes_init(nrf_crypto_aes_context_t * const p_context,
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nrf_crypto_aes_info_t const * const p_info,
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nrf_crypto_operation_t operation);
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/**@brief Internal function for uninitializing the AES context.
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*
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* @param[in] p_context Context object. Must be initialized before the call.
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*
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* @return NRF_SUCCESS on success.
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*/
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ret_code_t nrf_crypto_aes_uninit(nrf_crypto_aes_context_t * const p_context);
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/**@brief Function for setting the AES key.
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*
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* @param[in] p_context Context object. Must be initialized before the call.
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* @param[in] p_key Pointer to the AES key. This buffer will be copied and there is no need
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* to keep it by the user.
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*
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* @return NRF_SUCCESS on success.
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*/
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ret_code_t nrf_crypto_aes_key_set(nrf_crypto_aes_context_t * const p_context, uint8_t * p_key);
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|
/**@brief Function for setting an AES IV or a counter for AES modes which are using it.
|
||
|
|
*
|
||
|
|
* @param[in] p_context Context object. Must be initialized before the call.
|
||
|
|
* @param[in] p_iv Pointer to a buffer of the IV or a counter. This buffer will be copied
|
||
|
|
* and there is no need to keep it by the user.
|
||
|
|
*
|
||
|
|
* @return NRF_SUCCESS on success.
|
||
|
|
*/
|
||
|
|
ret_code_t nrf_crypto_aes_iv_set(nrf_crypto_aes_context_t * const p_context, uint8_t * p_iv);
|
||
|
|
|
||
|
|
/**@brief Function for getting an AES IV or a counter for mode which is supporting it.
|
||
|
|
*
|
||
|
|
* @param[in] p_context Context object. Must be initialized before the call.
|
||
|
|
* @param[out] p_iv Pointer to a buffer of the IV or a counter.
|
||
|
|
*
|
||
|
|
* @return NRF_SUCCESS on success.
|
||
|
|
*/
|
||
|
|
ret_code_t nrf_crypto_aes_iv_get(nrf_crypto_aes_context_t * const p_context, uint8_t * p_iv);
|
||
|
|
|
||
|
|
/**@brief AES update function for encryption, decryption and MAC calculation. It can be called once
|
||
|
|
* on the whole data block, or as many times as needed, until all the input data is processed.
|
||
|
|
* Functions: @ref nrf_crypto_aes_init, @ref nrf_crypto_aes_key_set, and, for some ciphers,
|
||
|
|
* @ref nrf_crypto_aes_iv_set, must be called before call to this API with the same context.
|
||
|
|
|
||
|
|
*
|
||
|
|
* @param[in] p_context Context object. Must be initialized before the call.
|
||
|
|
* @param[in] p_data_in Pointer to the input buffer to the AES.
|
||
|
|
* @param[in] data_size Size of the data to be processed in bytes.
|
||
|
|
* For all modes except CFB it must be multiple of 16 bytes.
|
||
|
|
* @param[out] p_data_out Pointer to the output buffer.
|
||
|
|
*
|
||
|
|
* @return NRF_SUCCESS on success.
|
||
|
|
*/
|
||
|
|
ret_code_t nrf_crypto_aes_update(nrf_crypto_aes_context_t * const p_context,
|
||
|
|
uint8_t * p_data_in,
|
||
|
|
size_t data_size,
|
||
|
|
uint8_t * p_data_out);
|
||
|
|
|
||
|
|
|
||
|
|
/**@brief Function processes the last data block if needed and finalizes the AES operation (ie. adds
|
||
|
|
* padding) and produces operation results (for MAC operations).
|
||
|
|
* Functions: @ref nrf_crypto_aes_init, @ref nrf_crypto_aes_key_set, and, for some ciphers,
|
||
|
|
* @ref nrf_crypto_aes_iv_set, must be called before call to this API with the same context.
|
||
|
|
*
|
||
|
|
* Upon successful operation function will deinitialize the context but for some ciphers it will be
|
||
|
|
* possible to read IV. In order to fully deinitialize context you must call
|
||
|
|
* @ref nrf_crypto_aes_uninit.
|
||
|
|
*
|
||
|
|
* @param[in] p_context Context object. Must be initialized before the call.
|
||
|
|
* @param[in] p_data_in Pointer to the input buffer to the AES.
|
||
|
|
* @param[in] data_size Size of the data to be processed in bytes.
|
||
|
|
* @param[out] p_data_out Pointer to the output buffer.
|
||
|
|
* When padding is set:
|
||
|
|
* - The size of p_data_out buffer must have extra space for
|
||
|
|
* padding. Otherwise, the function will return an error:
|
||
|
|
* NRF_ERROR_CRYPTO_OUTPUT_LENGTH.
|
||
|
|
* - When text_size is multiple of 16 bytes, p_text_out must be
|
||
|
|
* allocated with size equal to text_size + an additional block
|
||
|
|
* (i.e 16 bytes for padding).
|
||
|
|
* - When text_size is not a multiple of 16 bytes, p_text_out
|
||
|
|
* must be allocated with size aligned to the next full 16
|
||
|
|
* bytes block (i.e. 1 - 15 bytes for padding).
|
||
|
|
* @param[in,out] p_data_out_size IN:
|
||
|
|
* Size of the p_data_out buffer.
|
||
|
|
* OUT:
|
||
|
|
* Upon successfull function execution value will be updated
|
||
|
|
* with number of signifacnt bytes in p_data_out buffer.
|
||
|
|
* On decryption with padding function will result in a value
|
||
|
|
* without padded bytes.
|
||
|
|
*
|
||
|
|
* @return NRF_SUCCESS on success.
|
||
|
|
*/
|
||
|
|
ret_code_t nrf_crypto_aes_finalize(nrf_crypto_aes_context_t * const p_context,
|
||
|
|
uint8_t * p_data_in,
|
||
|
|
size_t data_size,
|
||
|
|
uint8_t * p_data_out,
|
||
|
|
size_t * p_data_out_size);
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
/**@brief AES integrated function for encryption, decryption and MAC calculation.
|
||
|
|
* It should be called once on the whole data block.
|
||
|
|
*
|
||
|
|
* @param[in] p_context Context object. If NULL, memory will be dynamically allocated.
|
||
|
|
* @param[in] p_info Pointer to structure holding information about: selected AES
|
||
|
|
* mode, key size, and padding.
|
||
|
|
* @param[in] operation Parameter indicating whether an encrypt (NRF_CRYPTO_ENCRYPT),
|
||
|
|
* a decrypt (NRF_CRYPTO_DECRYPT) or MAC calculation
|
||
|
|
* (NRF_CRYPTO_MAC_CALCULATE) operation shall be performed.
|
||
|
|
* @param[in] p_key Pointer to the AES key. This buffer will be copied and there is
|
||
|
|
* no need to keep it by the user.
|
||
|
|
* @param[in] p_iv Pointer to a buffer of the IV or a counter. This buffer will be
|
||
|
|
* copied and there is no need to keep it by the user.
|
||
|
|
* Can be NULL for ECB and CMAC.
|
||
|
|
* @param[in] p_data_in Pointer to the input buffer to the AES.
|
||
|
|
* @param[in] data_size Size of the data to be processed in bytes.
|
||
|
|
* @param[out] p_data_out Pointer to the output buffer.
|
||
|
|
* When padding is set:
|
||
|
|
* - The size of p_data_out buffer must have extra space for
|
||
|
|
* padding. Otherwise, the function will return an error:
|
||
|
|
* NRF_ERROR_CRYPTO_OUTPUT_LENGTH.
|
||
|
|
* - When text_size is multiple of 16 bytes, p_text_out must be
|
||
|
|
* allocated with size equal to text_size + an additional block
|
||
|
|
* (i.e 16 bytes for padding).
|
||
|
|
* - When text_size is not a multiple of 16 bytes, p_text_out
|
||
|
|
* must be allocated with size aligned to the next full 16
|
||
|
|
* bytes block (i.e. 1 - 15 bytes for padding).
|
||
|
|
* @param[in,out] p_data_out_size IN:
|
||
|
|
* Size of the p_data_out buffer.
|
||
|
|
* OUT:
|
||
|
|
* Upon successfull function execution value will be updated
|
||
|
|
* with number of signifacnt bytes in p_data_out buffer.
|
||
|
|
* On decryption function will result in a value without padded
|
||
|
|
* bytes.
|
||
|
|
*
|
||
|
|
* @return NRF_SUCCESS on success.
|
||
|
|
*/
|
||
|
|
ret_code_t nrf_crypto_aes_crypt(nrf_crypto_aes_context_t * const p_context,
|
||
|
|
nrf_crypto_aes_info_t const * const p_info,
|
||
|
|
nrf_crypto_operation_t operation,
|
||
|
|
uint8_t * p_key,
|
||
|
|
uint8_t * p_iv,
|
||
|
|
uint8_t * p_data_in,
|
||
|
|
size_t data_size,
|
||
|
|
uint8_t * p_data_out,
|
||
|
|
size_t * p_data_out_size);
|
||
|
|
#ifdef __cplusplus
|
||
|
|
}
|
||
|
|
#endif
|
||
|
|
|
||
|
|
#endif // #if NRF_MODULE_ENABLED(NRF_CRYPTO) || defined(__SDK_DOXYGEN__)
|
||
|
|
|
||
|
|
/** @} */
|
||
|
|
|
||
|
|
#endif // #ifndef NRF_CRYPTO_AES_H__
|