1 /* SPDX-License-Identifier: BSD-2-Clause */
2 /*******************************************************************************
3 * Copyright 2017-2018, Fraunhofer SIT sponsored by Infineon Technologies AG
4 * All rights reserved.
5 *******************************************************************************/
6
7 #ifdef HAVE_CONFIG_H
8 #include <config.h>
9 #endif
10
11 #include <stdlib.h>
12
13 #include "tss2_esys.h"
14 #include "tss2_mu.h"
15
16 #include "esys_iutil.h"
17 #include "test-esapi.h"
18 #define LOGMODULE test
19 #include "util/log.h"
20 #include "util/aux_util.h"
21
22 #define FLUSH true
23 #define NOT_FLUSH false
24
25 /*
26 * Function to compare policy digest with expected digest.
27 * The digest is computed with Esys_PolicyGetDigest.
28 */
29 bool
cmp_policy_digest(ESYS_CONTEXT * esys_context,ESYS_TR * session,TPM2B_DIGEST * expected_digest,char * comment,bool flush_session)30 cmp_policy_digest(ESYS_CONTEXT * esys_context,
31 ESYS_TR * session,
32 TPM2B_DIGEST * expected_digest,
33 char *comment, bool flush_session)
34 {
35
36 TSS2_RC r;
37 TPM2B_DIGEST *policyDigest;
38
39 r = Esys_PolicyGetDigest(esys_context,
40 *session,
41 ESYS_TR_NONE,
42 ESYS_TR_NONE, ESYS_TR_NONE, &policyDigest);
43 goto_if_error(r, "Error: PolicyGetDigest", error);
44
45 LOGBLOB_DEBUG(&policyDigest->buffer[0], policyDigest->size,
46 "POLICY DIGEST");
47
48 if (policyDigest->size != 20
49 || memcmp(&policyDigest->buffer[0], &expected_digest->buffer[0],
50 policyDigest->size)) {
51 free(policyDigest);
52 LOG_ERROR("Error: Policy%s digest did not match expected policy.",
53 comment);
54 return false;
55 }
56 free(policyDigest);
57 if (flush_session) {
58 r = Esys_FlushContext(esys_context, *session);
59 goto_if_error(r, "Error: PolicyGetDigest", error);
60 *session = ESYS_TR_NONE;
61 }
62
63 return true;
64
65 error:
66 return false;
67 }
68
69 /** This test is intended to test the ESAPI policy commands, not tested
70 * in other test cases.
71 * When possoble the commands are tested with a
72 * trial session and the policy digest is compared with the expected digest.
73 *
74 * Tested ESAPI commands:
75 * - Esys_FlushContext() (M)
76 * - Esys_PolicyTemplate() (F)
77 *
78 * @param[in,out] esys_context The ESYS_CONTEXT.
79 * @retval EXIT_FAILURE
80 * @retval EXIT_SKIP
81 * @retval EXIT_SUCCESS
82 */
83 int
test_esys_policy_template_opt(ESYS_CONTEXT * esys_context)84 test_esys_policy_template_opt(ESYS_CONTEXT * esys_context)
85 {
86 TSS2_RC r;
87 int failure_return = EXIT_FAILURE;
88
89 /* Dummy parameters for trial sessoin */
90 ESYS_TR sessionTrial = ESYS_TR_NONE;
91 TPMT_SYM_DEF symmetricTrial = {.algorithm = TPM2_ALG_AES,
92 .keyBits = {.aes = 128},
93 .mode = {.aes = TPM2_ALG_CFB}
94 };
95 TPM2B_NONCE nonceCallerTrial = {
96 .size = 20,
97 .buffer = {11, 12, 13, 14, 15, 16, 17, 18, 19, 11,
98 21, 22, 23, 24, 25, 26, 27, 28, 29, 30}
99 };
100
101 /*
102 * Test PolicyTemplate
103 */
104 r = Esys_StartAuthSession(esys_context, ESYS_TR_NONE, ESYS_TR_NONE,
105 ESYS_TR_NONE, ESYS_TR_NONE, ESYS_TR_NONE,
106 &nonceCallerTrial,
107 TPM2_SE_TRIAL, &symmetricTrial, TPM2_ALG_SHA1,
108 &sessionTrial);
109 goto_if_error(r, "Error: During initialization of policy trial session",
110 error);
111
112 TPM2B_DIGEST templateHash = {
113 .size = 20,
114 .buffer = {1, 2, 3, 4, 5, 6, 7, 8, 9, 10,
115 11, 12, 13, 14, 15, 16, 17, 18, 19, 20}
116 };
117
118 r = Esys_PolicyTemplate(esys_context,
119 sessionTrial,
120 ESYS_TR_NONE,
121 ESYS_TR_NONE, ESYS_TR_NONE, &templateHash);
122 if ((r == TPM2_RC_COMMAND_CODE) ||
123 (r == (TPM2_RC_COMMAND_CODE | TSS2_RESMGR_RC_LAYER)) ||
124 (r == (TPM2_RC_COMMAND_CODE | TSS2_RESMGR_TPM_RC_LAYER))) {
125 LOG_WARNING("Command TPM2_PolicyTemplate not supported by TPM.");
126 failure_return = EXIT_SKIP;
127 goto error;
128 } else {
129 goto_if_error(r, "Error: PolicyTemplate", error);
130
131 TPM2B_DIGEST expectedPolicyTemplate = {
132 .size = 20,
133 .buffer =
134 {0xf6, 0x6d, 0x2a, 0x9c, 0x6e, 0xa8, 0xdf, 0x1a, 0x49, 0x3c,
135 0x42, 0xcc, 0xac, 0x6e, 0x3d, 0x08, 0xc0, 0x84, 0xcf, 0x73}
136 };
137
138 if (!cmp_policy_digest
139 (esys_context, &sessionTrial, &expectedPolicyTemplate, "Template",
140 FLUSH))
141 goto error;
142 }
143
144 return EXIT_SUCCESS;
145
146 error:
147
148 if (sessionTrial != ESYS_TR_NONE) {
149 if (Esys_FlushContext(esys_context, sessionTrial) != TSS2_RC_SUCCESS) {
150 LOG_ERROR("Cleanup sessionTrial failed.");
151 }
152 }
153 return failure_return;
154 }
155
156 int
test_invoke_esapi(ESYS_CONTEXT * esys_context)157 test_invoke_esapi(ESYS_CONTEXT * esys_context) {
158 return test_esys_policy_template_opt(esys_context);
159 }
160