diff options
Diffstat (limited to 'thirdparty/nRF5_SDK_15.0.0_a53641a/components/libraries/crypto/backend/mbedtls/mbedtls_backend_init.c')
-rw-r--r-- | thirdparty/nRF5_SDK_15.0.0_a53641a/components/libraries/crypto/backend/mbedtls/mbedtls_backend_init.c | 106 |
1 files changed, 106 insertions, 0 deletions
diff --git a/thirdparty/nRF5_SDK_15.0.0_a53641a/components/libraries/crypto/backend/mbedtls/mbedtls_backend_init.c b/thirdparty/nRF5_SDK_15.0.0_a53641a/components/libraries/crypto/backend/mbedtls/mbedtls_backend_init.c new file mode 100644 index 0000000..aa37d67 --- /dev/null +++ b/thirdparty/nRF5_SDK_15.0.0_a53641a/components/libraries/crypto/backend/mbedtls/mbedtls_backend_init.c @@ -0,0 +1,106 @@ +/** + * 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_common.h" +#include "sdk_config.h" + +#if NRF_MODULE_ENABLED(NRF_CRYPTO) && NRF_MODULE_ENABLED(NRF_CRYPTO_BACKEND_MBEDTLS) + +#include <string.h> +#include <stdint.h> +#include "nrf_crypto_init.h" +#include "nrf_crypto_mem.h" +/*lint -save -e????*/ +#include "mbedtls/platform.h" +/*lint -restore*/ + + +#if NRF_CRYPTO_ALLOC_ON_STACK +#error "MBED TLS backend does not support memory allocation on stack. Use different allocator." +#endif + + +/** @internal @brief Function to use NRF_CRYPTO_ALLOC for MBED TLS memory allocation. + */ +static void * mbedtls_backend_calloc(size_t count, size_t size) +{ + size_t total_size = count * size; + void * p_data = NRF_CRYPTO_ALLOC(total_size); + if (p_data != NULL) + { + memset(p_data, 0, total_size); + } + return p_data; +} + + +/** @internal @brief Function to use NRF_CRYPTO_FREE for MBED TLS memory deallocation. + */ +static void mbedtls_backend_free(void * p_data) +{ + NRF_CRYPTO_FREE(p_data); +} + + +/** @internal @brief Function to initialize MBED TLS backend - setup memory management for. + */ +static ret_code_t mbedtls_backend_init(void) +{ + (void)mbedtls_platform_set_calloc_free(mbedtls_backend_calloc, mbedtls_backend_free); + return NRF_SUCCESS; +} + + +/** @internal @brief Function to uninitialize MBED TLS backend - currently no implementation is required. + */ +static ret_code_t mbedtls_backend_uninit(void) +{ + // Empty implementation + return NRF_SUCCESS; +} + + +CRYPTO_BACKEND_REGISTER(nrf_crypto_backend_info_t const mbedtls_backend) = +{ + .init_fn = mbedtls_backend_init, + .uninit_fn = mbedtls_backend_uninit, +}; + +#endif // NRF_MODULE_ENABLED(NRF_CRYPTO) && NRF_MODULE_ENABLED(NRF_CRYPTO_BACKEND_MBEDTLS) |