1
2 /*
3 * Licensed Materials - Property of IBM
4 *
5 * trousers - An open source TCG Software Stack
6 *
7 * (C) Copyright International Business Machines Corp. 2004-2007
8 *
9 */
10
11
12 #include <stdlib.h>
13 #include <stdio.h>
14 #include <string.h>
15 #include <time.h>
16 #include <errno.h>
17
18 #include "trousers/tss.h"
19 #include "trousers/trousers.h"
20 #include "trousers_types.h"
21 #include "spi_utils.h"
22 #include "capabilities.h"
23 #include "tsplog.h"
24 #include "obj.h"
25
26
27 #ifdef TSS_BUILD_TRANSPORT
28 TSS_RESULT
Transport_Extend(TSS_HCONTEXT tspContext,TCPA_PCRINDEX pcrNum,TCPA_DIGEST inDigest,TCPA_PCRVALUE * outDigest)29 Transport_Extend(TSS_HCONTEXT tspContext, /* in */
30 TCPA_PCRINDEX pcrNum, /* in */
31 TCPA_DIGEST inDigest, /* in */
32 TCPA_PCRVALUE * outDigest) /* out */
33 {
34 TSS_RESULT result;
35 UINT64 offset;
36 TCS_HANDLE handlesLen = 0;
37 UINT32 decLen;
38 BYTE data[sizeof(TCPA_PCRINDEX) + sizeof(TCPA_DIGEST)], *dec;
39
40 if ((result = obj_context_transport_init(tspContext)))
41 return result;
42
43 LogDebugFn("Executing in a transport session");
44
45 offset = 0;
46 Trspi_LoadBlob_UINT32(&offset, pcrNum, data);
47 Trspi_LoadBlob(&offset, TPM_SHA1_160_HASH_LEN, data, inDigest.digest);
48
49 if ((result = obj_context_transport_execute(tspContext, TPM_ORD_Extend, sizeof(data), data,
50 NULL, &handlesLen, NULL, NULL, NULL, &decLen,
51 &dec)))
52 return result;
53
54 offset = 0;
55 Trspi_UnloadBlob(&offset, decLen, dec, outDigest->digest);
56
57 free(dec);
58
59 return TSS_SUCCESS;
60 }
61
62 TSS_RESULT
Transport_PcrRead(TSS_HCONTEXT tspContext,TCPA_PCRINDEX pcrNum,TCPA_PCRVALUE * outDigest)63 Transport_PcrRead(TSS_HCONTEXT tspContext, /* in */
64 TCPA_PCRINDEX pcrNum, /* in */
65 TCPA_PCRVALUE * outDigest) /* out */
66 {
67 TSS_RESULT result;
68 UINT64 offset;
69 TCS_HANDLE handlesLen = 0;
70 UINT32 decLen;
71 BYTE data[sizeof(TCPA_PCRINDEX)], *dec;
72
73 if ((result = obj_context_transport_init(tspContext)))
74 return result;
75
76 LogDebugFn("Executing in a transport session");
77
78 offset = 0;
79 Trspi_LoadBlob_UINT32(&offset, pcrNum, data);
80
81 if ((result = obj_context_transport_execute(tspContext, TPM_ORD_PcrRead, sizeof(data),
82 data, NULL, &handlesLen, NULL, NULL, NULL,
83 &decLen, &dec)))
84 return result;
85
86 offset = 0;
87 Trspi_UnloadBlob(&offset, decLen, dec, outDigest->digest);
88
89 free(dec);
90
91 return TSS_SUCCESS;
92 }
93
94
95 TSS_RESULT
Transport_PcrReset(TSS_HCONTEXT tspContext,UINT32 pcrDataSizeIn,BYTE * pcrDataIn)96 Transport_PcrReset(TSS_HCONTEXT tspContext, /* in */
97 UINT32 pcrDataSizeIn, /* in */
98 BYTE * pcrDataIn) /* in */
99 {
100 TSS_RESULT result;
101 TCS_HANDLE handlesLen = 0;
102
103 if ((result = obj_context_transport_init(tspContext)))
104 return result;
105
106 LogDebugFn("Executing in a transport session");
107
108 return obj_context_transport_execute(tspContext, TPM_ORD_PCR_Reset, pcrDataSizeIn,
109 pcrDataIn, NULL, &handlesLen, NULL, NULL, NULL, NULL,
110 NULL);
111 }
112 #endif
113