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
25TSS_RESULT
26Transport_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