ecp.h 3.1 KB

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  1. /*
  2. * Copyright (C) 2011-2017 Intel Corporation. All rights reserved.
  3. *
  4. * Redistribution and use in source and binary forms, with or without
  5. * modification, are permitted provided that the following conditions
  6. * are met:
  7. *
  8. * * Redistributions of source code must retain the above copyright
  9. * notice, this list of conditions and the following disclaimer.
  10. * * Redistributions in binary form must reproduce the above copyright
  11. * notice, this list of conditions and the following disclaimer in
  12. * the documentation and/or other materials provided with the
  13. * distribution.
  14. * * Neither the name of Intel Corporation nor the names of its
  15. * contributors may be used to endorse or promote products derived
  16. * from this software without specific prior written permission.
  17. *
  18. * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
  19. * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
  20. * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
  21. * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
  22. * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
  23. * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
  24. * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
  25. * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
  26. * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  27. * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
  28. * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  29. *
  30. */
  31. #ifndef _ECP_H
  32. #define _ECP_H
  33. #include <stdint.h>
  34. #include <stdlib.h>
  35. #include "remote_attestation_result.h"
  36. #ifndef SAMPLE_FEBITSIZE
  37. #define SAMPLE_FEBITSIZE 256
  38. #endif
  39. #define SAMPLE_ECP_KEY_SIZE (SAMPLE_FEBITSIZE/8)
  40. typedef struct sample_ec_priv_t
  41. {
  42. uint8_t r[SAMPLE_ECP_KEY_SIZE];
  43. } sample_ec_priv_t;
  44. typedef struct sample_ec_dh_shared_t
  45. {
  46. uint8_t s[SAMPLE_ECP_KEY_SIZE];
  47. }sample_ec_dh_shared_t;
  48. typedef uint8_t sample_ec_key_128bit_t[16];
  49. #define SAMPLE_EC_MAC_SIZE 16
  50. #ifdef __cplusplus
  51. extern "C" {
  52. #endif
  53. #ifndef _ERRNO_T_DEFINED
  54. #define _ERRNO_T_DEFINED
  55. typedef int errno_t;
  56. #endif
  57. errno_t memcpy_s(void *dest, size_t numberOfElements, const void *src,
  58. size_t count);
  59. #ifdef SUPPLIED_KEY_DERIVATION
  60. typedef enum _sample_derive_key_type_t
  61. {
  62. SAMPLE_DERIVE_KEY_SMK_SK = 0,
  63. SAMPLE_DERIVE_KEY_MK_VK,
  64. } sample_derive_key_type_t;
  65. bool derive_key(
  66. const sample_ec_dh_shared_t *p_shared_key,
  67. uint8_t key_id,
  68. sample_ec_key_128bit_t *first_derived_key,
  69. sample_ec_key_128bit_t *second_derived_key);
  70. #else
  71. typedef enum _sample_derive_key_type_t
  72. {
  73. SAMPLE_DERIVE_KEY_SMK = 0,
  74. SAMPLE_DERIVE_KEY_SK,
  75. SAMPLE_DERIVE_KEY_MK,
  76. SAMPLE_DERIVE_KEY_VK,
  77. } sample_derive_key_type_t;
  78. bool derive_key(
  79. const sample_ec_dh_shared_t *p_shared_key,
  80. uint8_t key_id,
  81. sample_ec_key_128bit_t *derived_key);
  82. #endif
  83. bool verify_cmac128(
  84. sample_ec_key_128bit_t mac_key,
  85. const uint8_t *p_data_buf,
  86. uint32_t buf_size,
  87. const uint8_t *p_mac_buf);
  88. #ifdef __cplusplus
  89. }
  90. #endif
  91. #endif