98 lines
3.3 KiB
C
98 lines
3.3 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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#include "sdk_config.h"
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#include "nordic_common.h"
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#include "nrf_crypto_shared.h"
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#if NRF_MODULE_ENABLED(NRF_CRYPTO)
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void nrf_crypto_internal_swap_endian_in_place(uint8_t * p_buffer, size_t size)
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{
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ASSERT(p_buffer != NULL);
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uint8_t temp;
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uint8_t * p_first = p_buffer;
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uint8_t * p_last = p_buffer + size - 1;
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while (p_last >= p_first)
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{
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temp = *p_first;
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*p_first = *p_last;
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*p_last = temp;
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p_first++;
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p_last--;
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}
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}
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void nrf_crypto_internal_swap_endian(uint8_t * p_out, uint8_t const * p_in, size_t size)
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{
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ASSERT(p_out != NULL);
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ASSERT(p_in != NULL);
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uint8_t const * p_first = p_in;
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uint8_t * p_last = p_out + size - 1;
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while (p_last >= p_out)
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{
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*p_last = *p_first;
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p_first++;
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p_last--;
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}
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}
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void nrf_crypto_internal_double_swap_endian(uint8_t * p_out, uint8_t const * p_in, size_t part_size)
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{
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nrf_crypto_internal_swap_endian(p_out, p_in, part_size);
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nrf_crypto_internal_swap_endian(&p_out[part_size], &p_in[part_size], part_size);
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}
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void nrf_crypto_internal_double_swap_endian_in_place(uint8_t * p_buffer, size_t part_size)
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{
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nrf_crypto_internal_swap_endian_in_place(p_buffer, part_size);
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nrf_crypto_internal_swap_endian_in_place(&p_buffer[part_size], part_size);
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}
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#endif
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