diff options
Diffstat (limited to 'thirdparty/nRF5_SDK_15.0.0_a53641a/components/libraries/crypto/nrf_crypto_shared.c')
-rw-r--r-- | thirdparty/nRF5_SDK_15.0.0_a53641a/components/libraries/crypto/nrf_crypto_shared.c | 97 |
1 files changed, 97 insertions, 0 deletions
diff --git a/thirdparty/nRF5_SDK_15.0.0_a53641a/components/libraries/crypto/nrf_crypto_shared.c b/thirdparty/nRF5_SDK_15.0.0_a53641a/components/libraries/crypto/nrf_crypto_shared.c new file mode 100644 index 0000000..689ee48 --- /dev/null +++ b/thirdparty/nRF5_SDK_15.0.0_a53641a/components/libraries/crypto/nrf_crypto_shared.c @@ -0,0 +1,97 @@ +/** + * Copyright (c) 2018 - 2018, Nordic Semiconductor ASA + * + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without modification, + * are permitted provided that the following conditions are met: + * + * 1. Redistributions of source code must retain the above copyright notice, this + * list of conditions and the following disclaimer. + * + * 2. Redistributions in binary form, except as embedded into a Nordic + * Semiconductor ASA integrated circuit in a product or a software update for + * such product, must reproduce the above copyright notice, this list of + * conditions and the following disclaimer in the documentation and/or other + * materials provided with the distribution. + * + * 3. Neither the name of Nordic Semiconductor ASA nor the names of its + * contributors may be used to endorse or promote products derived from this + * software without specific prior written permission. + * + * 4. This software, with or without modification, must only be used with a + * Nordic Semiconductor ASA integrated circuit. + * + * 5. Any software provided in binary form under this license must not be reverse + * engineered, decompiled, modified and/or disassembled. + * + * THIS SOFTWARE IS PROVIDED BY NORDIC SEMICONDUCTOR ASA "AS IS" AND ANY EXPRESS + * OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES + * OF MERCHANTABILITY, NONINFRINGEMENT, AND FITNESS FOR A PARTICULAR PURPOSE ARE + * DISCLAIMED. IN NO EVENT SHALL NORDIC SEMICONDUCTOR ASA OR CONTRIBUTORS BE + * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR + * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE + * GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT + * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + * + */ + +#include "sdk_config.h" +#include "nordic_common.h" +#include "nrf_crypto_shared.h" + + +#if NRF_MODULE_ENABLED(NRF_CRYPTO) + + +void nrf_crypto_internal_swap_endian_in_place(uint8_t * p_buffer, size_t size) +{ + ASSERT(p_buffer != NULL); + + uint8_t temp; + uint8_t * p_first = p_buffer; + uint8_t * p_last = p_buffer + size - 1; + while (p_last >= p_first) + { + temp = *p_first; + *p_first = *p_last; + *p_last = temp; + p_first++; + p_last--; + } +} + + +void nrf_crypto_internal_swap_endian(uint8_t * p_out, uint8_t const * p_in, size_t size) +{ + ASSERT(p_out != NULL); + ASSERT(p_in != NULL); + + uint8_t const * p_first = p_in; + uint8_t * p_last = p_out + size - 1; + while (p_last >= p_out) + { + *p_last = *p_first; + p_first++; + p_last--; + } +} + + +void nrf_crypto_internal_double_swap_endian(uint8_t * p_out, uint8_t const * p_in, size_t part_size) +{ + nrf_crypto_internal_swap_endian(p_out, p_in, part_size); + nrf_crypto_internal_swap_endian(&p_out[part_size], &p_in[part_size], part_size); +} + + +void nrf_crypto_internal_double_swap_endian_in_place(uint8_t * p_buffer, size_t part_size) +{ + nrf_crypto_internal_swap_endian_in_place(p_buffer, part_size); + nrf_crypto_internal_swap_endian_in_place(&p_buffer[part_size], part_size); +} + + +#endif |