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 #include <stdlib.h>
12 #include <stdio.h>
13 #include <string.h>
14 #include <inttypes.h>
15
16 #include "trousers/tss.h"
17 #include "trousers/trousers.h"
18 #include "trousers_types.h"
19 #include "spi_utils.h"
20 #include "capabilities.h"
21 #include "tsplog.h"
22 #include "obj.h"
23
24
25 #ifdef TSS_BUILD_TRANSPORT
26 TSS_RESULT
Transport_Quote(TSS_HCONTEXT tspContext,TCS_KEY_HANDLE keyHandle,TCPA_NONCE * antiReplay,UINT32 pcrDataSizeIn,BYTE * pcrDataIn,TPM_AUTH * privAuth,UINT32 * pcrDataSizeOut,BYTE ** pcrDataOut,UINT32 * sigSize,BYTE ** sig)27 Transport_Quote(TSS_HCONTEXT tspContext, /* in */
28 TCS_KEY_HANDLE keyHandle, /* in */
29 TCPA_NONCE *antiReplay, /* in */
30 UINT32 pcrDataSizeIn, /* in */
31 BYTE * pcrDataIn, /* in */
32 TPM_AUTH * privAuth, /* in, out */
33 UINT32 * pcrDataSizeOut, /* out */
34 BYTE ** pcrDataOut, /* out */
35 UINT32 * sigSize, /* out */
36 BYTE ** sig) /* out */
37 {
38 TSS_RESULT result;
39 UINT32 handlesLen, dataLen, decLen;
40 TCS_HANDLE *handles, handle;
41 BYTE *dec = NULL;
42 TPM_DIGEST pubKeyHash;
43 Trspi_HashCtx hashCtx;
44 UINT64 offset;
45 BYTE *data;
46
47
48 if ((result = obj_context_transport_init(tspContext)))
49 return result;
50
51 LogDebugFn("Executing in a transport session");
52
53 if ((result = obj_tcskey_get_pubkeyhash(keyHandle, pubKeyHash.digest)))
54 return result;
55
56 result = Trspi_HashInit(&hashCtx, TSS_HASH_SHA1);
57 result |= Trspi_Hash_DIGEST(&hashCtx, pubKeyHash.digest);
58 if ((result |= Trspi_HashFinal(&hashCtx, pubKeyHash.digest)))
59 return result;
60
61 handlesLen = 1;
62 handle = keyHandle;
63 handles = &handle;
64
65 dataLen = sizeof(TCPA_NONCE) + pcrDataSizeIn;
66 if ((data = malloc(dataLen)) == NULL) {
67 LogError("malloc of %u bytes failed", dataLen);
68 return TSPERR(TSS_E_OUTOFMEMORY);
69 }
70
71 offset = 0;
72 Trspi_LoadBlob_NONCE(&offset, data, antiReplay);
73 Trspi_LoadBlob(&offset, pcrDataSizeIn, data, pcrDataIn);
74
75 if ((result = obj_context_transport_execute(tspContext, TPM_ORD_Quote, dataLen, data,
76 &pubKeyHash, &handlesLen, &handles,
77 privAuth, NULL, &decLen, &dec))) {
78 free(data);
79 return result;
80 }
81 free(data);
82
83 offset = 0;
84 Trspi_UnloadBlob_PCR_COMPOSITE(&offset, dec, NULL);
85 *pcrDataSizeOut = offset;
86
87 if ((*pcrDataOut = malloc(*pcrDataSizeOut)) == NULL) {
88 free(dec);
89 LogError("malloc of %u bytes failed", *pcrDataSizeOut);
90 *pcrDataSizeOut = 0;
91 return TSPERR(TSS_E_OUTOFMEMORY);
92 }
93
94 offset = 0;
95 Trspi_UnloadBlob(&offset, *pcrDataSizeOut, dec, *pcrDataOut);
96 Trspi_UnloadBlob_UINT32(&offset, sigSize, dec);
97
98 if ((*sig = malloc(*sigSize)) == NULL) {
99 free(*pcrDataOut);
100 *pcrDataOut = NULL;
101 *pcrDataSizeOut = 0;
102 free(dec);
103 LogError("malloc of %u bytes failed", *sigSize);
104 *sigSize = 0;
105 return TSPERR(TSS_E_OUTOFMEMORY);
106 }
107 Trspi_UnloadBlob(&offset, *sigSize, dec, *sig);
108
109 free(dec);
110
111 return result;
112 }
113 #endif
114
115