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. 2007
8 *
9 */
10
11
12 #include <stdlib.h>
13 #include <string.h>
14
15 #include "trousers/tss.h"
16 #include "trousers/trousers.h"
17 #include "trousers_types.h"
18 #include "spi_utils.h"
19 #include "capabilities.h"
20 #include "tsplog.h"
21 #include "obj.h"
22
23
24 #ifdef TSS_BUILD_TRANSPORT
25 TSS_RESULT
Transport_UnBind(TSS_HCONTEXT tspContext,TCS_KEY_HANDLE keyHandle,UINT32 inDataSize,BYTE * inData,TPM_AUTH * privAuth,UINT32 * outDataSize,BYTE ** outData)26 Transport_UnBind(TSS_HCONTEXT tspContext, /* in */
27 TCS_KEY_HANDLE keyHandle, /* in */
28 UINT32 inDataSize, /* in */
29 BYTE * inData, /* in */
30 TPM_AUTH * privAuth, /* in, out */
31 UINT32 * outDataSize, /* out */
32 BYTE ** outData) /* out */
33 {
34 TSS_RESULT result;
35 UINT32 handlesLen, dataLen, decLen;
36 TCS_HANDLE *handles, handle;
37 TPM_DIGEST pubKeyHash;
38 Trspi_HashCtx hashCtx;
39 BYTE *dec, *data;
40 UINT64 offset;
41
42 if ((result = obj_context_transport_init(tspContext)))
43 return result;
44
45 LogDebugFn("Executing in a transport session");
46
47 if ((result = obj_tcskey_get_pubkeyhash(keyHandle, pubKeyHash.digest)))
48 return result;
49
50 result = Trspi_HashInit(&hashCtx, TSS_HASH_SHA1);
51 result |= Trspi_Hash_DIGEST(&hashCtx, pubKeyHash.digest);
52 if ((result |= Trspi_HashFinal(&hashCtx, pubKeyHash.digest)))
53 return result;
54
55 handlesLen = 1;
56 handle = keyHandle;
57 handles = &handle;
58
59 dataLen = sizeof(UINT32) + inDataSize;
60 if ((data = malloc(dataLen)) == NULL) {
61 LogError("malloc of %u bytes failed", dataLen);
62 return TSPERR(TSS_E_OUTOFMEMORY);
63 }
64
65 offset = 0;
66 Trspi_LoadBlob_UINT32(&offset, inDataSize, data);
67 Trspi_LoadBlob(&offset, inDataSize, data, inData);
68
69 if ((result = obj_context_transport_execute(tspContext, TPM_ORD_UnBind, dataLen, data,
70 &pubKeyHash, &handlesLen, &handles,
71 privAuth, NULL, &decLen, &dec))) {
72 free(data);
73 return result;
74 }
75 free(data);
76
77 offset = 0;
78 Trspi_UnloadBlob_UINT32(&offset, outDataSize, dec);
79
80 if ((*outData = malloc(*outDataSize)) == NULL) {
81 free(dec);
82 LogError("malloc of %u bytes failed", *outDataSize);
83 return TSPERR(TSS_E_OUTOFMEMORY);
84 }
85 Trspi_UnloadBlob(&offset, *outDataSize, dec, *outData);
86
87 free(dec);
88
89 return TSS_SUCCESS;
90 }
91 #endif
92
93