diff options
Diffstat (limited to 'thirdparty/nRF5_SDK_15.0.0_a53641a/components/libraries/crypto/backend/cc310/cc310_backend_shared.c')
-rw-r--r-- | thirdparty/nRF5_SDK_15.0.0_a53641a/components/libraries/crypto/backend/cc310/cc310_backend_shared.c | 115 |
1 files changed, 115 insertions, 0 deletions
diff --git a/thirdparty/nRF5_SDK_15.0.0_a53641a/components/libraries/crypto/backend/cc310/cc310_backend_shared.c b/thirdparty/nRF5_SDK_15.0.0_a53641a/components/libraries/crypto/backend/cc310/cc310_backend_shared.c new file mode 100644 index 0000000..d5f2351 --- /dev/null +++ b/thirdparty/nRF5_SDK_15.0.0_a53641a/components/libraries/crypto/backend/cc310/cc310_backend_shared.c @@ -0,0 +1,115 @@ +/** + * Copyright (c) 2017 - 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" +#if NRF_MODULE_ENABLED(NRF_CRYPTO) && NRF_MODULE_ENABLED(NRF_CRYPTO_BACKEND_CC310) + +#include "nrf.h" +#include "cc310_backend_shared.h" +#include "nrf_crypto_error.h" +#include "nrf_crypto_rng.h" +#include "crys_rnd_error.h" +#include "nrf_crypto_shared.h" +#include "cc310_backend_shared.h" + + +static uint32_t m_use_count = 0; + +void cc310_backend_enable(void) +{ + m_use_count++; + + if (m_use_count == 1) + { + // Enable the CryptoCell hardware + NRF_CRYPTOCELL->ENABLE = 1; + + // Enable the CryptoCell IRQ + NVIC_EnableIRQ(CRYPTOCELL_IRQn); + } +} + +void cc310_backend_disable(void) +{ + m_use_count--; + + // If no more users. Disable HW/IRQ + if (m_use_count == 0) + { + // Disable the CryptoCell hardware + NRF_CRYPTOCELL->ENABLE = 0; + + // Disable the CryptoCell IRQ + NVIC_DisableIRQ(CRYPTOCELL_IRQn); + } +} + + +uint32_t nrf_crypto_backend_cc310_rng(void * p_state, uint16_t size, uint8_t * p_data) +{ +#if defined(NRF_CRYPTO_RNG_ENABLED) && (NRF_CRYPTO_RNG_ENABLED == 1) + + ret_code_t result = nrf_crypto_rng_vector_generate_no_mutex(p_data, (size_t)size); + if (result == NRF_SUCCESS) + { + return CRYS_OK; + } + else if (result == NRF_ERROR_CRYPTO_CONTEXT_NOT_INITIALIZED) + { + return CRYS_RND_INSTANTIATION_NOT_DONE_ERROR; + } + else + { + return CRYS_RND_IS_NOT_SUPPORTED; + } + +#elif defined(NRF_CRYPTO_RNG_ENABLED) && (NRF_CRYPTO_RNG_ENABLED == 0) + + return NRF_ERROR_CRYPTO_FEATURE_UNAVAILABLE; + +#else + + #warning NRF_CRYPTO_RNG_ENABLED define not found in sdk_config.h (Is the sdk_config.h valid?). + +#endif // NRF_CRYPTO_RNG_ENABLED +} + + +#endif // NRF_MODULE_ENABLED(NRF_CRYPTO) && NRF_MODULE_ENABLED(NRF_CRYPTO_BACKEND_CC310) |