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
30 TSS_RESULT
TCSP_Sign_Internal(TCS_CONTEXT_HANDLE hContext,TCS_KEY_HANDLE keyHandle,UINT32 areaToSignSize,BYTE * areaToSign,TPM_AUTH * privAuth,UINT32 * sigSize,BYTE ** sig)31 TCSP_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, ¶mSize);
69 if (!result) {
70 result = tpm_rsp_parse(TPM_ORD_Sign, txBlob, paramSize, sigSize, sig, privAuth,
71 NULL);
72 }
73 LogResult("sign", result);
74 done:
75 auth_mgr_release_auth(privAuth, NULL, hContext);
76 return result;
77 }
78
79