oberon_backend_eddsa.c 3.7 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_config.h"
  41. #include "nordic_common.h"
  42. #if NRF_MODULE_ENABLED(NRF_CRYPTO) && \
  43. NRF_MODULE_ENABLED(NRF_CRYPTO_BACKEND_OBERON) && \
  44. NRF_MODULE_ENABLED(NRF_CRYPTO_BACKEND_OBERON_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 "ocrypto_ed25519.h"
  52. ret_code_t nrf_crypto_backend_ed25519_sign(
  53. void * p_context,
  54. nrf_crypto_ecc_private_key_t const * p_private_key,
  55. uint8_t const * p_message,
  56. size_t message_size,
  57. uint8_t * p_signature)
  58. {
  59. ocrypto_ed25519_sign(p_signature,
  60. p_message,
  61. message_size,
  62. p_private_key->key_ed25519.private_part,
  63. p_private_key->key_ed25519.public_part);
  64. return NRF_SUCCESS;
  65. }
  66. ret_code_t nrf_crypto_backend_ed25519_verify(
  67. void * p_context,
  68. nrf_crypto_ecc_public_key_t const * p_public_key,
  69. uint8_t const * p_message,
  70. size_t message_size,
  71. uint8_t const * p_signature)
  72. {
  73. int result;
  74. result = ocrypto_ed25519_verify(p_signature,
  75. p_message,
  76. message_size,
  77. p_public_key->key_ed25519.key);
  78. if (result != 0)
  79. {
  80. return NRF_ERROR_CRYPTO_ECDSA_INVALID_SIGNATURE;
  81. }
  82. return NRF_SUCCESS;
  83. }
  84. #endif // NRF_MODULE_ENABLED(NRF_CRYPTO) && NRF_MODULE_ENABLED(NRF_CRYPTO_BACKEND_OBERON) && NRF_MODULE_ENABLED(NRF_CRYPTO_BACKEND_OBERON_ECC_ED25519)