nrf_sw_backend_hash.c 4.7 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) && NRF_MODULE_ENABLED(NRF_CRYPTO_BACKEND_NRF_SW)
  42. #include "nrf_sw_backend_hash.h"
  43. #include "sha256.h"
  44. #include "nrf_crypto_types.h"
  45. #include "nrf_crypto_error.h"
  46. #include "nrf_crypto_hash_shared.h"
  47. #include "sdk_macros.h"
  48. #include "nrf_log.h"
  49. #include "nrf_assert.h"
  50. #if defined(NRF_CRYPTO_BACKEND_NRF_SW_HASH_LITTLE_ENDIAN_DIGEST_ENABLED)
  51. #error The configuration NRF_CRYPTO_BACKEND_NRF_SW_HASH_LITTLE_ENDIAN_DIGEST_ENABLED was removed in SDK 15.1.0. Please see release notes for details on removing this error message.
  52. #endif
  53. static ret_code_t nrf_sw_backend_hash_sha256_init(void * const p_context)
  54. {
  55. ret_code_t ret_val;
  56. // No parameter testing on this level.
  57. // This has been done on upper level.
  58. sha256_context_t * p_backend_context
  59. = &(((nrf_crypto_backend_hash_sha256_context_t *) p_context)->context);
  60. ret_val = sha256_init(p_backend_context);
  61. return ret_val;
  62. }
  63. static uint32_t nrf_sw_backend_hash_sha256_update(void * const p_context,
  64. uint8_t const * p_data,
  65. size_t len)
  66. {
  67. ret_code_t ret_val;
  68. // Limited parameter testing on this level.
  69. // This has been done on upper level.
  70. sha256_context_t * p_backend_context
  71. = &(((nrf_crypto_backend_hash_sha256_context_t * ) p_context)->context);
  72. ret_val = sha256_update(p_backend_context, p_data, len);
  73. return ret_val;
  74. }
  75. static uint32_t nrf_sw_backend_hash_sha256_finalize(void * const p_context,
  76. uint8_t * p_digest,
  77. size_t * const p_digest_len)
  78. {
  79. ret_code_t ret_val;
  80. // Limited parameter testing on this level.
  81. // This has been done on upper level.
  82. sha256_context_t * p_backend_context
  83. = &(((nrf_crypto_backend_hash_sha256_context_t * )p_context)->context);
  84. if (NRF_CRYPTO_HASH_SIZE_SHA256 > *p_digest_len)
  85. {
  86. return NRF_ERROR_CRYPTO_OUTPUT_LENGTH;
  87. }
  88. ret_val = sha256_final(p_backend_context, p_digest, false);
  89. if (ret_val != NRF_SUCCESS)
  90. {
  91. return ret_val;
  92. }
  93. *p_digest_len = NRF_CRYPTO_HASH_SIZE_SHA256;
  94. return NRF_SUCCESS;
  95. }
  96. const nrf_crypto_hash_info_t g_nrf_crypto_hash_sha256_info =
  97. {
  98. .init_fn = nrf_sw_backend_hash_sha256_init,
  99. .update_fn = nrf_sw_backend_hash_sha256_update,
  100. .finalize_fn = nrf_sw_backend_hash_sha256_finalize,
  101. .digest_size = NRF_CRYPTO_HASH_SIZE_SHA256,
  102. .context_size = sizeof(nrf_crypto_backend_hash_sha256_context_t),
  103. .hash_mode = NRF_CRYPTO_HASH_MODE_SHA256
  104. };
  105. #endif // NRF_MODULE_ENABLED(NRF_CRYPTO) && NRF_MODULE_ENABLED(NRF_CRYPTO_BACKEND_NRF_SW)