cc310_backend_eddsa.c 5.1 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) && \
  43. NRF_MODULE_ENABLED(NRF_CRYPTO_BACKEND_CC310) && \
  44. NRF_MODULE_ENABLED(NRF_CRYPTO_BACKEND_CC310_ECC_ED25519)
  45. #include <stdint.h>
  46. #include <stdbool.h>
  47. #include <string.h>
  48. #include "nrf_crypto_ecc.h"
  49. #include "nrf_crypto_rng.h"
  50. #include "nrf_crypto_eddsa.h"
  51. #include "cc310_backend_ecc.h"
  52. #include "cc310_backend_shared.h"
  53. #include "cc310_backend_mutex.h"
  54. #include "crys_ec_edw_api.h"
  55. #include "crys_ec_mont_edw_error.h"
  56. ret_code_t nrf_crypto_backend_ed25519_sign(
  57. void * p_context,
  58. nrf_crypto_ecc_private_key_t const * p_private_key,
  59. uint8_t const * p_message,
  60. size_t message_size,
  61. uint8_t * p_signature)
  62. {
  63. ret_code_t result;
  64. CRYSError_t crys_error;
  65. bool mutex_locked;
  66. size_t signature_size = 2 * CRYS_ECEDW_ORD_SIZE_IN_BYTES;
  67. nrf_crypto_backend_cc310_ed25519_context_t * p_ctx =
  68. (nrf_crypto_backend_cc310_ed25519_context_t *)p_context;
  69. nrf_crypto_backend_ed25519_private_key_t * p_prv =
  70. (nrf_crypto_backend_ed25519_private_key_t *)p_private_key;
  71. mutex_locked = cc310_backend_mutex_trylock();
  72. VERIFY_TRUE(mutex_locked, NRF_ERROR_CRYPTO_BUSY);
  73. crys_error = CRYS_ECEDW_Sign(p_signature,
  74. &signature_size,
  75. p_message,
  76. message_size,
  77. p_prv->key,
  78. sizeof(p_prv->key),
  79. &p_ctx->temp_data);
  80. cc310_backend_mutex_unlock();
  81. result = nrf_crypto_backend_cc310_ecc_error_convert(crys_error);
  82. return result;
  83. }
  84. ret_code_t nrf_crypto_backend_ed25519_verify(
  85. void * p_context,
  86. nrf_crypto_ecc_public_key_t const * p_public_key,
  87. uint8_t const * p_message,
  88. size_t message_size,
  89. uint8_t const * p_signature)
  90. {
  91. ret_code_t result;
  92. CRYSError_t crys_error;
  93. bool mutex_locked;
  94. nrf_crypto_backend_cc310_ed25519_context_t * p_ctx =
  95. (nrf_crypto_backend_cc310_ed25519_context_t *)p_context;
  96. nrf_crypto_backend_ed25519_public_key_t * p_pub =
  97. (nrf_crypto_backend_ed25519_public_key_t *)p_public_key;
  98. mutex_locked = cc310_backend_mutex_trylock();
  99. VERIFY_TRUE(mutex_locked, NRF_ERROR_CRYPTO_BUSY);
  100. crys_error = CRYS_ECEDW_Verify(p_signature,
  101. 2 * CRYS_ECEDW_ORD_SIZE_IN_BYTES,
  102. p_pub->key,
  103. CRYS_ECEDW_ORD_SIZE_IN_BYTES,
  104. (uint8_t *)p_message,
  105. message_size,
  106. &p_ctx->temp_data);
  107. cc310_backend_mutex_unlock();
  108. result = nrf_crypto_backend_cc310_ecc_error_convert(crys_error);
  109. return result;
  110. }
  111. #endif // NRF_MODULE_ENABLED(NRF_CRYPTO) && NRF_MODULE_ENABLED(NRF_CRYPTO_BACKEND_CC310) && NRF_MODULE_ENABLED(NRF_CRYPTO_BACKEND_CC310_ECC_ED25519)