nrf_hw_backend_rng.c 3.7 KB

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  1. /**
  2. * Copyright (c) 2018 - 2020, Nordic Semiconductor ASA
  3. *
  4. * All rights reserved.
  5. *
  6. * Redistribution and use in source and binary forms, with or without modification,
  7. * are permitted provided that the following conditions are met:
  8. *
  9. * 1. Redistributions of source code must retain the above copyright notice, this
  10. * list of conditions and the following disclaimer.
  11. *
  12. * 2. Redistributions in binary form, except as embedded into a Nordic
  13. * Semiconductor ASA integrated circuit in a product or a software update for
  14. * such product, must reproduce the above copyright notice, this list of
  15. * conditions and the following disclaimer in the documentation and/or other
  16. * materials provided with the distribution.
  17. *
  18. * 3. Neither the name of Nordic Semiconductor ASA nor the names of its
  19. * contributors may be used to endorse or promote products derived from this
  20. * software without specific prior written permission.
  21. *
  22. * 4. This software, with or without modification, must only be used with a
  23. * Nordic Semiconductor ASA integrated circuit.
  24. *
  25. * 5. Any software provided in binary form under this license must not be reverse
  26. * engineered, decompiled, modified and/or disassembled.
  27. *
  28. * THIS SOFTWARE IS PROVIDED BY NORDIC SEMICONDUCTOR ASA "AS IS" AND ANY EXPRESS
  29. * OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
  30. * OF MERCHANTABILITY, NONINFRINGEMENT, AND FITNESS FOR A PARTICULAR PURPOSE ARE
  31. * DISCLAIMED. IN NO EVENT SHALL NORDIC SEMICONDUCTOR ASA OR CONTRIBUTORS BE
  32. * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
  33. * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE
  34. * GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  35. * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  36. * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
  37. * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  38. *
  39. */
  40. #include "sdk_common.h"
  41. #if NRF_MODULE_ENABLED(NRF_CRYPTO) && \
  42. NRF_MODULE_ENABLED(NRF_CRYPTO_BACKEND_NRF_HW_RNG) && \
  43. !NRF_MODULE_ENABLED(NRF_CRYPTO_BACKEND_NRF_HW_RNG_MBEDTLS_CTR_DRBG)
  44. #include "nrf_crypto_rng.h"
  45. #include "nrf_drv_rng.h"
  46. ret_code_t nrf_crypto_rng_backend_init(void * const p_context,
  47. void * const p_temp_buffer)
  48. {
  49. ret_code_t ret_val;
  50. UNUSED_PARAMETER(p_context);
  51. UNUSED_PARAMETER(p_temp_buffer);
  52. ret_val = nrf_drv_rng_init(NULL);
  53. return ret_val;
  54. }
  55. ret_code_t nrf_crypto_rng_backend_uninit(void * const p_context)
  56. {
  57. UNUSED_PARAMETER(p_context);
  58. nrf_drv_rng_uninit();
  59. return NRF_SUCCESS;
  60. }
  61. ret_code_t nrf_crypto_rng_backend_vector_generate(void * const p_context,
  62. uint8_t * const p_target,
  63. size_t size,
  64. bool use_mutex)
  65. {
  66. UNUSED_PARAMETER(use_mutex);
  67. UNUSED_PARAMETER(p_context);
  68. nrf_drv_rng_block_rand(p_target, size);
  69. return NRF_SUCCESS;
  70. }
  71. ret_code_t nrf_crypto_rng_backend_reseed(void * const p_context,
  72. void * p_temp_buffer,
  73. uint8_t * p_input_data,
  74. size_t size)
  75. {
  76. UNUSED_PARAMETER(p_context);
  77. UNUSED_PARAMETER(p_temp_buffer);
  78. UNUSED_PARAMETER(p_input_data);
  79. UNUSED_PARAMETER(size);
  80. return NRF_ERROR_CRYPTO_FEATURE_UNAVAILABLE;
  81. }
  82. #endif //NRF_MODULE_ENABLED(NRF_CRYPTO) && NRF_MODULE_ENABLED(NRF_CRYPTO_BACKEND_NRF_HW_RNG) && !NRF_MODULE_ENABLED(NRF_CRYPTO_BACKEND_NRF_HW_RNG_MBEDTLS_CTR_DRBG)