100 lines
4.1 KiB
C
100 lines
4.1 KiB
C
/*
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* Copyright (c) 2021, Nordic Semiconductor ASA
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* All rights reserved.
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*
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* SPDX-License-Identifier: BSD-3-Clause
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, 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 must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other 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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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
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* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY, AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER 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
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* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*
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*/
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#ifndef NRF_802154_AES_CCM_H_
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#define NRF_802154_AES_CCM_H_
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#include <stdbool.h>
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#include <stdint.h>
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#include "nrf_802154_const.h"
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#ifdef __cplusplus
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extern "C" {
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#endif
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#define NRF_802154_AES_CCM_L_VALUE 2 // Annex B3.2 Mode of operation d)
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#define NRF_802154_AES_CCM_NONCE_SIZE (15 - NRF_802154_AES_CCM_L_VALUE) // Annex B4.1 CCM* mode encryption and authentication transformation b)
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/**
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* @brief Data necessary for a single AES-CCM* operation.
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*/
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typedef struct
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{
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uint8_t key[AES_CCM_KEY_SIZE]; ///< Pointer to AES-CCM* key
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uint8_t * auth_data; ///< Pointer to AES-CCM* authorization data
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uint64_t auth_data_len; ///< Length of AES-CCM* authorization data
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uint8_t * plain_text_data; ///< Pointer to AES-CCM* plain text data for encryption and authorization
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uint8_t plain_text_data_len; ///< Length of plain text data
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uint8_t nonce[NRF_802154_AES_CCM_NONCE_SIZE]; ///< Pointer to AES-CCM* nonce
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uint8_t mic_level; ///< Message Integrity Code level
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uint8_t * raw_frame; ///< Pointer to the buffer that contains the PHR and PSDU of the transmitted frame.
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} nrf_802154_aes_ccm_data_t;
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/**
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* @brief Resets AES-CCM* transformation.
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*/
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void nrf_802154_aes_ccm_transform_reset(void);
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/**
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* @brief Prepares AES-CCM* transformation.
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*
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* @param[in] p_aes_ccm_data Data to be used for the AES-CCM* transformation.
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*
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* @retval true The transformation was prepared successfully and can be performed.
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* @retval false Provided parameters do not allow for successful transformation.
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*/
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bool nrf_802154_aes_ccm_transform_prepare(const nrf_802154_aes_ccm_data_t * p_aes_ccm_data);
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/**
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* @brief Starts AES-CCM* transformation.
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*
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* @note This function should not be called until the transformation is prepared with a call to
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* @ref nrf_802154_aes_ccm_transform_prepare. Any call to this function that is not paired
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* with an earlier prepare call will be ignored silently, i.e. the transformation will
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* not be started at all.
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*
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* @param[in] p_frame Pointer to the buffer that contains a frame being transmitted.
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*/
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void nrf_802154_aes_ccm_transform_start(uint8_t * p_frame);
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/**
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* @brief Aborts AES-CCM* transformation.
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*
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* @param[in] p_frame Pointer to the buffer that contains a frame being transmitted.
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*/
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void nrf_802154_aes_ccm_transform_abort(uint8_t * p_frame);
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#endif // NRF_802154_AES_CCM_H_
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