nrf_hw_backend_rng.h 3.4 KB

123456789101112131415161718192021222324252627282930313233343536373839404142434445464748495051525354555657585960616263646566676869707172737475767778798081828384858687888990919293949596979899100101102103104
  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. #ifndef NRF_HW_BACKEND_RNG_H__
  41. #define NRF_HW_BACKEND_RNG_H__
  42. /** @file
  43. *
  44. * @defgroup nrf_crypto_nrf_hw_backend_rng nrf_crypto HW RNG backend
  45. * @{
  46. * @ingroup nrf_crypto_backends
  47. *
  48. * @brief RNG functionality provided by the nrf_crypto nRF HW RNG backend.
  49. */
  50. #include "sdk_common.h"
  51. #if NRF_MODULE_ENABLED(NRF_CRYPTO_BACKEND_NRF_HW_RNG) && \
  52. !NRF_MODULE_ENABLED(NRF_CRYPTO_BACKEND_NRF_HW_RNG_MBEDTLS_CTR_DRBG)
  53. #if !NRF_MODULE_ENABLED(RNG)
  54. #error Enable RNG_ENABLED in sdk_config.h.
  55. #endif
  56. #if !NRFX_RNG_CONFIG_ERROR_CORRECTION
  57. #error Enable NRFX_RNG_CONFIG_ERROR_CORRECTION and RNG_CONFIG_ERROR_CORRECTION in sdk_config.h.
  58. #endif
  59. #include "nrf_crypto_rng_shared.h"
  60. #ifdef __cplusplus
  61. extern "C" {
  62. #endif
  63. #if NRF_MODULE_ENABLED(NRF_CRYPTO_RNG)
  64. #error "More than one RNG backend enabled."
  65. #endif // NRF_MODULE_ENABLED(NRF_CRYPTO_RNG)
  66. #define NRF_CRYPTO_RNG_ENABLED 1
  67. /**
  68. * @internal @brief Context for nRF RNG peripheral.
  69. */
  70. typedef struct
  71. {
  72. nrf_crypto_rng_internal_context_t header; //!< Internal common context header.
  73. } nrf_crypto_backend_rng_context_t;
  74. /**
  75. * @internal @brief Dummy temp buffer for nRF RNG peripheral.
  76. */
  77. typedef struct
  78. {
  79. uint32_t reserved;
  80. } nrf_crypto_backend_rng_temp_buffer_t;
  81. #ifdef __cplusplus
  82. }
  83. #endif
  84. #endif // NRF_MODULE_ENABLED(NRF_CRYPTO_BACKEND_NRF_HW_RNG) && !NRF_MODULE_ENABLED(NRF_CRYPTO_BACKEND_NRF_HW_RNG_MBEDTLS_CTR_DRBG)
  85. /**@} */
  86. #endif // NRF_HW_BACKEND_RNG_H__