1 /* SPDX-License-Identifier: BSD-2-Clause */
2 /***********************************************************************
3 * Copyright (c) 2017-2018, Intel Corporation
4 *
5 * All rights reserved.
6 ***********************************************************************/
7 #ifdef HAVE_CONFIG_H
8 #include <config.h>
9 #endif
10
11 #include <stdio.h>
12 #include <stdlib.h>
13 #include <string.h>
14
15 #include "tss2_sys.h"
16
17 #define LOGMODULE test
18 #include "util/log.h"
19 #include "test.h"
20 #include "sapi-util.h"
21 #define PCR_8 8
22 /**
23 * This program contains integration test for SAPI Tss2_Sys_PCR_Read
24 * and Tss2_Sys_PCR_Extend. This is an use case scenario on PCR extend.
25 * First, we will get the list of PCR available through getcapability
26 * SAPI. Then, PCR_Read SAPI is called to list out the PCR value and
27 * PCR_Extend SAPI is called next to update the PCR value. Last,
28 * PCR_Read SAPI is called again to check the PCR values are changed.
29 */
30 int
test_invoke(TSS2_SYS_CONTEXT * sapi_context)31 test_invoke (TSS2_SYS_CONTEXT *sapi_context)
32 {
33 TSS2_RC rc;
34 TPMI_YES_NO more_data;
35 TPMS_CAPABILITY_DATA capability_data;
36 UINT16 i, digest_size;
37 TPML_PCR_SELECTION pcr_selection;
38 UINT32 pcr_update_counter_before_extend;
39 UINT32 pcr_update_counter_after_extend;
40 UINT8 pcr_before_extend[20];
41 UINT8 pcr_after_extend[20];
42 TPML_DIGEST pcr_values;
43 TPML_DIGEST_VALUES digests;
44 TPML_PCR_SELECTION pcr_selection_out;
45
46 TSS2L_SYS_AUTH_COMMAND sessions_data = {
47 .count = 1,
48 .auths = {{.sessionHandle = TPM2_RS_PW,
49 .sessionAttributes = 0,
50 .nonce={.size=0},
51 .hmac={.size=0}}}};
52
53 LOG_INFO("PCR Extension tests started.");
54 rc = Tss2_Sys_GetCapability(sapi_context, 0, TPM2_CAP_PCR_PROPERTIES, TPM2_PT_PCR_COUNT, 1, &more_data, &capability_data, 0);
55 if (rc != TSS2_RC_SUCCESS) {
56 LOG_ERROR("GetCapability FAILED! Response Code : 0x%x", rc);
57 exit(1);
58 }
59 digests.count = 1;
60 digests.digests[0].hashAlg = TPM2_ALG_SHA1;
61 digest_size = GetDigestSize( digests.digests[0].hashAlg );
62
63 for( i = 0; i < digest_size; i++ )
64 {
65 digests.digests[0].digest.sha1[i] = (UINT8)(i % 256);
66 }
67 pcr_selection.count = 1;
68 pcr_selection.pcrSelections[0].hash = TPM2_ALG_SHA1;
69 pcr_selection.pcrSelections[0].sizeofSelect = 3;
70 pcr_selection.pcrSelections[0].pcrSelect[0] = 0;
71 pcr_selection.pcrSelections[0].pcrSelect[1] = 0;
72 pcr_selection.pcrSelections[0].pcrSelect[2] = 0;
73 pcr_selection.pcrSelections[0].pcrSelect[PCR_8 / 8] = 1 << (PCR_8 % 8);
74
75 rc = Tss2_Sys_PCR_Read(sapi_context, 0, &pcr_selection, &pcr_update_counter_before_extend, &pcr_selection_out, &pcr_values, 0);
76 if (rc != TSS2_RC_SUCCESS) {
77 LOG_ERROR("PCR_Read FAILED! Response Code : 0x%x", rc);
78 exit(1);
79 }
80 memcpy(&(pcr_before_extend[0]), &(pcr_values.digests[0].buffer[0]), pcr_values.digests[0].size);
81
82 rc = Tss2_Sys_PCR_Extend(sapi_context, PCR_8, &sessions_data, &digests, 0);
83 if (rc != TSS2_RC_SUCCESS) {
84 LOG_ERROR("PCR_Extend FAILED! Response Code : 0x%x", rc);
85 exit(1);
86 }
87 rc = Tss2_Sys_PCR_Read(sapi_context, 0, &pcr_selection, &pcr_update_counter_after_extend, &pcr_selection_out, &pcr_values, 0);
88 if (rc != TSS2_RC_SUCCESS) {
89 LOG_ERROR("PCR_Read FAILED! Response Code : 0x%x", rc);
90 exit(1);
91 }
92 memcpy(&(pcr_after_extend[0]), &(pcr_values.digests[0].buffer[0]), pcr_values.digests[0].size);
93
94 if(pcr_update_counter_before_extend == pcr_update_counter_after_extend) {
95 LOG_ERROR("ERROR!! pcr_update_counter didn't change value");
96 exit(1);
97 }
98 if(memcmp(&(pcr_before_extend[0]), &(pcr_after_extend[0]), 20) == 0) {
99 LOG_ERROR("ERROR!! PCR didn't change value");
100 exit(1);
101 }
102 LOG_INFO("PCR Extension Test Passed!");
103 return 0;
104 }
105