oberon_backend_hmac.c 6.5 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_OBERON)
  42. #include "nrf_log.h"
  43. #include "nrf_crypto_error.h"
  44. #include "nrf_crypto_types.h"
  45. #include "oberon_backend_hmac.h"
  46. #if NRF_MODULE_ENABLED(NRF_CRYPTO_BACKEND_OBERON_HMAC_SHA256)
  47. #define HMAC_SHA256_BLOCK_SIZE 64
  48. static ret_code_t oberon_backend_hmac_init_sha256(void * const p_context,
  49. uint8_t const * p_key,
  50. size_t key_size)
  51. {
  52. nrf_crypto_backend_oberon_hmac_sha256_context_t * p_ctx =
  53. (nrf_crypto_backend_oberon_hmac_sha256_context_t *)p_context;
  54. ocrypto_hmac_sha256_init(&p_ctx->oberon_ctx, p_key, key_size);
  55. return NRF_SUCCESS;
  56. }
  57. static ret_code_t oberon_backend_hmac_update_sha256(void * const p_context,
  58. uint8_t const * p_data,
  59. size_t size)
  60. {
  61. nrf_crypto_backend_oberon_hmac_sha256_context_t * p_ctx =
  62. (nrf_crypto_backend_oberon_hmac_sha256_context_t *)p_context;
  63. ocrypto_hmac_sha256_update(&p_ctx->oberon_ctx, p_data, size);
  64. return NRF_SUCCESS;
  65. }
  66. static ret_code_t oberon_backend_hmac_finalize_sha256(void * const p_context,
  67. uint8_t * p_digest,
  68. size_t * const p_size)
  69. {
  70. nrf_crypto_backend_oberon_hmac_sha256_context_t * const p_ctx =
  71. (nrf_crypto_backend_oberon_hmac_sha256_context_t *)p_context;
  72. ocrypto_hmac_sha256_final(&p_ctx->oberon_ctx, p_digest);
  73. // Assume operation was successful and update the digest size accordingly.
  74. *p_size = p_ctx->header.p_info->digest_size;
  75. return NRF_SUCCESS;
  76. }
  77. // Information structure for HMAC SHA256 using Oberon backend.
  78. const nrf_crypto_hmac_info_t g_nrf_crypto_hmac_sha256_info =
  79. {
  80. .init_fn = oberon_backend_hmac_init_sha256,
  81. .update_fn = oberon_backend_hmac_update_sha256,
  82. .finalize_fn = oberon_backend_hmac_finalize_sha256,
  83. .digest_size = NRF_CRYPTO_HASH_SIZE_SHA256,
  84. .context_size = sizeof(nrf_crypto_backend_oberon_hmac_sha256_context_t),
  85. .type = NRF_CRYPTO_HMAC_SHA256_TYPE
  86. };
  87. #endif // NRF_MODULE_ENABLED(NRF_CRYPTO_BACKEND_OBERON_HMAC_SHA256)
  88. #if NRF_MODULE_ENABLED(NRF_CRYPTO_BACKEND_OBERON_HMAC_SHA512)
  89. #define HMAC_SHA512_BLOCK_SIZE 128
  90. static ret_code_t oberon_backend_hmac_init_sha512(void * const p_context,
  91. uint8_t const * p_key,
  92. size_t key_size)
  93. {
  94. nrf_crypto_backend_oberon_hmac_sha512_context_t * p_ctx =
  95. (nrf_crypto_backend_oberon_hmac_sha512_context_t *)p_context;
  96. ocrypto_hmac_sha512_init(&p_ctx->oberon_ctx, p_key, key_size);
  97. return NRF_SUCCESS;
  98. }
  99. static ret_code_t oberon_backend_hmac_update_sha512(void * const p_context,
  100. uint8_t const * p_data,
  101. size_t size)
  102. {
  103. nrf_crypto_backend_oberon_hmac_sha512_context_t * p_ctx =
  104. (nrf_crypto_backend_oberon_hmac_sha512_context_t *)p_context;
  105. ocrypto_hmac_sha512_update(&p_ctx->oberon_ctx, p_data, size);
  106. return NRF_SUCCESS;
  107. }
  108. static ret_code_t oberon_backend_hmac_finalize_sha512(void * const p_context,
  109. uint8_t * p_digest,
  110. size_t * const p_size)
  111. {
  112. nrf_crypto_backend_oberon_hmac_sha512_context_t * const p_ctx =
  113. (nrf_crypto_backend_oberon_hmac_sha512_context_t *)p_context;
  114. ocrypto_hmac_sha512_final(&p_ctx->oberon_ctx, p_digest);
  115. // Assume operation was successful and update the digest size accordingly.
  116. *p_size = p_ctx->header.p_info->digest_size;
  117. return NRF_SUCCESS;
  118. }
  119. // Information structure for HMAC SHA512 using Oberon backend.
  120. const nrf_crypto_hmac_info_t g_nrf_crypto_hmac_sha512_info =
  121. {
  122. .init_fn = oberon_backend_hmac_init_sha512,
  123. .update_fn = oberon_backend_hmac_update_sha512,
  124. .finalize_fn = oberon_backend_hmac_finalize_sha512,
  125. .digest_size = NRF_CRYPTO_HASH_SIZE_SHA512,
  126. .context_size = sizeof(nrf_crypto_backend_oberon_hmac_sha512_context_t),
  127. .type = NRF_CRYPTO_HMAC_SHA512_TYPE
  128. };
  129. #endif // NRF_MODULE_ENABLED(NRF_CRYPTO_BACKEND_OBERON_HMAC_SHA512)
  130. #endif // NRF_MODULE_ENABLED(NRF_CRYPTO) && NRF_MODULE_ENABLED(NRF_CRYPTO_BACKEND_OBERON)