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
8 *
9 */
10
11
12#include <stdlib.h>
13#include <stdio.h>
14#include <string.h>
15#include <inttypes.h>
16
17#include "trousers/tss.h"
18#include "trousers_types.h"
19#include "tcs_tsp.h"
20#include "tcsps.h"
21#include "tcs_utils.h"
22#include "tcs_int_literals.h"
23#include "capabilities.h"
24#include "tcslog.h"
25#include "req_mgr.h"
26#include "tcsd_wrap.h"
27#include "tcsd.h"
28
29
30TSS_RESULT
31TCSP_Sign_Internal(TCS_CONTEXT_HANDLE hContext,	/* in */
32		   TCS_KEY_HANDLE keyHandle,	/* in */
33		   UINT32 areaToSignSize,	/* in */
34		   BYTE * areaToSign,	/* in */
35		   TPM_AUTH * privAuth,	/* in, out */
36		   UINT32 * sigSize,	/* out */
37		   BYTE ** sig	/* out */
38    )
39{
40	UINT64 offset = 0;
41	UINT32 paramSize;
42	TSS_RESULT result;
43	TCPA_KEY_HANDLE keySlot;
44	BYTE txBlob[TSS_TPM_TXBLOB_SIZE];
45
46	LogDebug("Entering Sign");
47	if ((result = ctx_verify_context(hContext)))
48		return result;
49
50	if (privAuth != NULL) {
51		LogDebug("Auth Used");
52		if ((result = auth_mgr_check(hContext, &privAuth->AuthHandle)))
53			goto done;
54	} else {
55		LogDebug("No Auth");
56	}
57
58	if ((result = ensureKeyIsLoaded(hContext, keyHandle, &keySlot)))
59		goto done;
60
61	if ((result = tpm_rqu_build(TPM_ORD_Sign, &offset, txBlob, keySlot, areaToSignSize,
62				    areaToSign, privAuth)))
63		return result;
64
65	if ((result = req_mgr_submit_req(txBlob)))
66		goto done;
67
68	result = UnloadBlob_Header(txBlob, &paramSize);
69	if (!result) {
70		result = tpm_rsp_parse(TPM_ORD_Sign, txBlob, paramSize, sigSize, sig, privAuth,
71				       NULL);
72	}
73	LogResult("sign", result);
74done:
75	auth_mgr_release_auth(privAuth, NULL, hContext);
76	return result;
77}
78
79