cc310_bl_backend_ecdsa.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_config.h"
  41. #include "nordic_common.h"
  42. #if NRF_MODULE_ENABLED(NRF_CRYPTO) && NRF_MODULE_ENABLED(NRF_CRYPTO_BACKEND_CC310_BL)
  43. #if defined(NRF_CRYPTO_BACKEND_CC310_BL_ECC_LITTLE_ENDIAN_ENABLED)
  44. #error The configuration NRF_CRYPTO_BACKEND_CC310_BL_ECC_LITTLE_ENDIAN_ENABLED was removed in SDK 15.1.0. Please see release notes for details on removing this error message.
  45. #endif // defined(NRF_CRYPTO_BACKEND_CC310_BL_ECC_LITTLE_ENDIAN_ENABLED)
  46. #include <string.h>
  47. #include "app_util.h"
  48. #include "nrf_crypto_error.h"
  49. #include "nrf_crypto_mem.h"
  50. #include "nrf_crypto_shared.h"
  51. #include "cc310_bl_backend_ecdsa.h"
  52. #include "cc310_bl_backend_shared.h"
  53. #include "cc310_backend_mutex.h"
  54. #include "crys_ecpki_error.h"
  55. #if NRF_MODULE_ENABLED(NRF_CRYPTO_BACKEND_CC310_BL_ECC_SECP224R1) || \
  56. NRF_MODULE_ENABLED(NRF_CRYPTO_BACKEND_CC310_BL_ECC_SECP256R1)
  57. static ret_code_t crys_error_to_ret_code(CRYSError_t crys_error)
  58. {
  59. switch (crys_error)
  60. {
  61. case CRYS_OK:
  62. return NRF_SUCCESS;
  63. case CRYS_ECDSA_VERIFY_INCONSISTENT_VERIFY_ERROR:
  64. return NRF_ERROR_CRYPTO_ECDSA_INVALID_SIGNATURE;
  65. default:
  66. break;
  67. }
  68. return NRF_ERROR_CRYPTO_INTERNAL;
  69. }
  70. #endif
  71. #if NRF_MODULE_ENABLED(NRF_CRYPTO_BACKEND_CC310_BL_ECC_SECP224R1)
  72. STATIC_ASSERT(offsetof(nrf_cc310_bl_ecc_signature_secp224r1_t, r) == 0,
  73. "Offset of r in nrf_cc310_bl_ecc_signature_secp224r1_t is unexpected");
  74. STATIC_ASSERT(offsetof(nrf_cc310_bl_ecc_signature_secp224r1_t, s) ==
  75. NRF_CRYPTO_ECC_SECP224R1_RAW_PRIVATE_KEY_SIZE,
  76. "Offset of s in nrf_cc310_bl_ecc_signature_secp224r1_t is unexpected");
  77. ret_code_t nrf_crypto_backend_secp224r1_verify(
  78. void * p_context,
  79. void const * p_public_key,
  80. uint8_t const * p_data,
  81. size_t data_size,
  82. uint8_t const * p_signature)
  83. {
  84. ret_code_t result;
  85. CRYSError_t crys_error;
  86. bool mutex_locked;
  87. nrf_crypto_backend_secp224r1_verify_context_t * p_ctx =
  88. (nrf_crypto_backend_secp224r1_verify_context_t *)p_context;
  89. nrf_crypto_backend_secp224r1_public_key_t * p_pub =
  90. (nrf_crypto_backend_secp224r1_public_key_t *)p_public_key;
  91. p_ctx->user_context.init_val = NRF_CC310_BL_ECDSA_CONTEXT_INITIALIZED;
  92. mutex_locked = cc310_backend_mutex_trylock();
  93. VERIFY_TRUE(mutex_locked, NRF_ERROR_CRYPTO_BUSY);
  94. cc310_bl_backend_enable();
  95. crys_error = nrf_cc310_bl_ecdsa_verify_secp224r1(
  96. &p_ctx->user_context,
  97. &p_pub->public_key,
  98. (nrf_cc310_bl_ecc_signature_secp224r1_t const *)p_signature,
  99. p_data,
  100. data_size);
  101. cc310_bl_backend_disable();
  102. cc310_backend_mutex_unlock();
  103. result = crys_error_to_ret_code(crys_error);
  104. return result;
  105. }
  106. #endif // NRF_MODULE_ENABLED(NRF_CRYPTO_BACKEND_CC310_BL_ECC_SECP224R1)
  107. #if NRF_MODULE_ENABLED(NRF_CRYPTO_BACKEND_CC310_BL_ECC_SECP256R1)
  108. STATIC_ASSERT(offsetof(nrf_cc310_bl_ecc_signature_secp256r1_t, r) == 0,
  109. "Offset of r in nrf_cc310_bl_ecc_signature_secp256r1_t is unexpected");
  110. STATIC_ASSERT(offsetof(nrf_cc310_bl_ecc_signature_secp256r1_t, s) ==
  111. NRF_CRYPTO_ECC_SECP256R1_RAW_PRIVATE_KEY_SIZE,
  112. "Offset of s in nrf_cc310_bl_ecc_signature_secp256r1_t is unexpected");
  113. ret_code_t nrf_crypto_backend_secp256r1_verify(
  114. void * p_context,
  115. void const * p_public_key,
  116. uint8_t const * p_data,
  117. size_t data_size,
  118. uint8_t const * p_signature)
  119. {
  120. ret_code_t result;
  121. CRYSError_t crys_error;
  122. bool mutex_locked;
  123. nrf_crypto_backend_secp256r1_verify_context_t * p_ctx =
  124. (nrf_crypto_backend_secp256r1_verify_context_t *)p_context;
  125. nrf_crypto_backend_secp256r1_public_key_t * p_pub =
  126. (nrf_crypto_backend_secp256r1_public_key_t *)p_public_key;
  127. p_ctx->user_context.init_val = NRF_CC310_BL_ECDSA_CONTEXT_INITIALIZED;
  128. mutex_locked = cc310_backend_mutex_trylock();
  129. VERIFY_TRUE(mutex_locked, NRF_ERROR_CRYPTO_BUSY);
  130. cc310_bl_backend_enable();
  131. crys_error = nrf_cc310_bl_ecdsa_verify_secp256r1(
  132. &p_ctx->user_context,
  133. &p_pub->public_key,
  134. (nrf_cc310_bl_ecc_signature_secp256r1_t const *)p_signature,
  135. p_data,
  136. data_size);
  137. cc310_bl_backend_disable();
  138. cc310_backend_mutex_unlock();
  139. result = crys_error_to_ret_code(crys_error);
  140. return result;
  141. }
  142. #endif // NRF_MODULE_ENABLED(NRF_CRYPTO_BACKEND_CC310_BL_ECC_SECP256R1)
  143. #endif // NRF_MODULE_ENABLED(NRF_CRYPTO) && NRF_MODULE_ENABLED(NRF_CRYPTO_BACKEND_CC310_BL)