Line data Source code
1 : /**
2 : * Copyright Notice:
3 : * Copyright 2023-2025 DMTF. All rights reserved.
4 : * License: BSD 3-Clause License. For full text see link: https://github.com/DMTF/libspdm/blob/main/LICENSE.md
5 : **/
6 :
7 : #include "internal/libspdm_crypt_lib.h"
8 : #include "internal/libspdm_common_lib.h"
9 : #include "internal/libspdm_fips_lib.h"
10 :
11 : #if LIBSPDM_FIPS_MODE
12 :
13 : /*hardcode random for ecdsa*/
14 4 : int libspdm_hardcode_random_number_ecdsa(void *rng_state, unsigned char *output, size_t len)
15 : {
16 : /*Random number*/
17 4 : const uint8_t random[] = {
18 : 0x01, 0x5b, 0x92, 0x22, 0xfc, 0x35, 0xc5, 0x2b,
19 : 0x79, 0x1c, 0xcd, 0x37, 0x07, 0x7d, 0xae, 0x6a,
20 : 0x88, 0x1f, 0x7d, 0x03, 0x30, 0x92, 0x67, 0x47,
21 : 0x0b, 0xce, 0x31, 0x7c, 0x46, 0xdd, 0x90, 0xbf
22 : };
23 4 : libspdm_copy_mem(output, len, random, sizeof(random));
24 :
25 4 : return 0;
26 : }
27 :
28 : /**
29 : * ECDSA self_test
30 : **/
31 1 : bool libspdm_fips_selftest_ecdsa(void *fips_selftest_context)
32 : {
33 1 : bool result = true;
34 :
35 : #if LIBSPDM_ECDSA_SUPPORT
36 1 : libspdm_fips_selftest_context_t *context = fips_selftest_context;
37 1 : LIBSPDM_ASSERT(fips_selftest_context != NULL);
38 :
39 : /* any test fail cause the FIPS fail*/
40 1 : if (context->tested_algo != context->self_test_result) {
41 0 : return false;
42 : }
43 :
44 : /* check if run before.*/
45 1 : if ((context->tested_algo & LIBSPDM_FIPS_SELF_TEST_ECDSA) != 0) {
46 0 : return true;
47 : }
48 :
49 : uint8_t signature[32 * 2];
50 : size_t sig_size;
51 : void *ec_context;
52 :
53 1 : sig_size = sizeof(signature);
54 1 : libspdm_zero_mem(signature, sig_size);
55 :
56 : /* Message hash */
57 1 : const uint8_t message_hash[] = {
58 : 0x9a, 0x1b, 0x6d, 0xe3, 0xff, 0xd0, 0x7e, 0x77,
59 : 0xe2, 0x54, 0xc6, 0x27, 0x9a, 0xc3, 0x28, 0x07,
60 : 0x42, 0x43, 0x1a, 0x32, 0xc8, 0xaf, 0x0c, 0x87,
61 : 0x94, 0xff, 0x40, 0x75, 0x09, 0xfe, 0x40, 0xd8
62 : };
63 :
64 : /* Private Key */
65 1 : const uint8_t priv_key[] = {
66 : 0xd6, 0x84, 0xd1, 0x7c, 0xe3, 0x6b, 0xe7, 0x08,
67 : 0xbc, 0xd9, 0x89, 0x3f, 0xbb, 0xf4, 0xf2, 0xcf,
68 : 0x8d, 0x7f, 0xd4, 0x72, 0xbc, 0xfb, 0x54, 0x29,
69 : 0xd9, 0x86, 0xe2, 0x86, 0xc2, 0x38, 0xe5, 0xed
70 : };
71 :
72 : /* Public Key */
73 1 : const uint8_t public_key[] = {
74 : 0x54, 0xbc, 0x5f, 0x6b, 0x70, 0x9b, 0x29, 0x5c,
75 : 0xa9, 0x43, 0xd0, 0xb7, 0xf3, 0xa2, 0x4b, 0xf0,
76 : 0x76, 0xb1, 0xd1, 0x9f, 0x55, 0x6a, 0x4e, 0xa0,
77 : 0x40, 0x54, 0xd2, 0xb1, 0x2f, 0x0f, 0xc1, 0x6d,
78 : 0xe7, 0x53, 0xe1, 0x3a, 0xd9, 0xb9, 0x2d, 0xd6,
79 : 0x3a, 0xda, 0x9d, 0xa9, 0xa9, 0x4e, 0xdd, 0x30,
80 : 0x60, 0x24, 0x9f, 0x9d, 0xcb, 0xfc, 0x1a, 0x56,
81 : 0x35, 0x63, 0x64, 0xe2, 0x64, 0xcf, 0x00, 0xed
82 : };
83 :
84 : /* Expected signature*/
85 1 : const uint8_t expected_signature[] = {
86 : 0xe1, 0x6a, 0xe9, 0x76, 0x61, 0x97, 0x8e, 0xe9,
87 : 0xc7, 0x0f, 0xe0, 0x20, 0xc0, 0x65, 0xe1, 0x6c,
88 : 0x89, 0x6f, 0x24, 0x6b, 0x4e, 0x88, 0x10, 0xcd,
89 : 0xb4, 0x9a, 0xcc, 0x20, 0xcf, 0xa5, 0xb0, 0xc9,
90 : 0xc1, 0x02, 0x4b, 0xa7, 0x41, 0xef, 0x51, 0x8f,
91 : 0xe3, 0x11, 0xec, 0x95, 0xe2, 0xf4, 0x83, 0x97,
92 : 0x3d, 0x32, 0x72, 0xf6, 0x4b, 0x34, 0xd3, 0x9f,
93 : 0x25, 0x6a, 0x12, 0x3b, 0x7c, 0x87, 0xc4, 0x4d
94 : };
95 :
96 1 : ec_context = libspdm_ec_new_by_nid(LIBSPDM_CRYPTO_NID_ECDSA_NIST_P256);
97 1 : if (ec_context == NULL) {
98 0 : LIBSPDM_DEBUG((LIBSPDM_DEBUG_INFO, "ec_context new failed \n"));
99 0 : result = false;
100 0 : goto update;
101 : }
102 :
103 1 : result = libspdm_ec_set_pub_key(ec_context, public_key, sizeof(public_key));
104 1 : if (!result) {
105 0 : LIBSPDM_DEBUG((LIBSPDM_DEBUG_INFO, "ec_context set pub_key failed \n"));
106 0 : libspdm_ec_free(ec_context);
107 0 : result = false;
108 0 : goto update;
109 : }
110 :
111 1 : result = libspdm_ec_set_priv_key(ec_context, priv_key, sizeof(priv_key));
112 1 : if (!result) {
113 0 : LIBSPDM_DEBUG((LIBSPDM_DEBUG_INFO, "ec_context set priv_key failed \n"));
114 0 : libspdm_ec_free(ec_context);
115 0 : result = false;
116 0 : goto update;
117 : }
118 :
119 : /*ECDSA KAT test*/
120 1 : result = libspdm_ecdsa_sign_ex(ec_context, LIBSPDM_CRYPTO_NID_SHA256,
121 : message_hash, sizeof(message_hash),
122 : signature, &sig_size,
123 : libspdm_hardcode_random_number_ecdsa);
124 1 : if (!result) {
125 0 : LIBSPDM_DEBUG((LIBSPDM_DEBUG_INFO, "ECDSA sign failed \n"));
126 0 : libspdm_ec_free(ec_context);
127 0 : result = false;
128 0 : goto update;
129 : }
130 :
131 1 : if (sig_size != sizeof(expected_signature)) {
132 0 : LIBSPDM_DEBUG((LIBSPDM_DEBUG_INFO, "ECDSA KAT failed \n"));
133 0 : libspdm_ec_free(ec_context);
134 0 : result = false;
135 0 : goto update;
136 : }
137 :
138 1 : if (!libspdm_consttime_is_mem_equal(signature, expected_signature,
139 : sizeof(expected_signature))) {
140 0 : LIBSPDM_DEBUG((LIBSPDM_DEBUG_INFO, "ECDSA KAT failed \n"));
141 0 : libspdm_ec_free(ec_context);
142 0 : result = false;
143 0 : goto update;
144 : }
145 :
146 1 : result = libspdm_ecdsa_verify(ec_context, LIBSPDM_CRYPTO_NID_SHA256,
147 : message_hash, sizeof(message_hash),
148 : signature, sig_size);
149 1 : if (!result) {
150 0 : LIBSPDM_DEBUG((LIBSPDM_DEBUG_INFO, "ECDSA selftest failed \n"));
151 0 : libspdm_ec_free(ec_context);
152 0 : result = false;
153 0 : goto update;
154 : }
155 :
156 1 : libspdm_ec_free(ec_context);
157 :
158 1 : update:
159 : /* mark it as tested*/
160 1 : context->tested_algo |= LIBSPDM_FIPS_SELF_TEST_ECDSA;
161 :
162 : /* record test result*/
163 1 : if (result) {
164 1 : context->self_test_result |= LIBSPDM_FIPS_SELF_TEST_ECDSA;
165 : } else {
166 0 : context->self_test_result &= ~LIBSPDM_FIPS_SELF_TEST_ECDSA;
167 : }
168 :
169 : #endif/*LIBSPDM_ECDSA_SUPPORT*/
170 :
171 1 : return result;
172 : }
173 :
174 : #endif/*LIBSPDM_FIPS_MODE*/
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