1 /* Microsoft Reference Implementation for TPM 2.0
2 *
3 * The copyright in this software is being made available under the BSD License,
4 * included below. This software may be subject to other third party and
5 * contributor rights, including patent rights, and no such rights are granted
6 * under this license.
7 *
8 * Copyright (c) Microsoft Corporation
9 *
10 * All rights reserved.
11 *
12 * BSD License
13 *
14 * Redistribution and use in source and binary forms, with or without modification,
15 * are permitted provided that the following conditions are met:
16 *
17 * Redistributions of source code must retain the above copyright notice, this list
18 * of conditions and the following disclaimer.
19 *
20 * Redistributions in binary form must reproduce the above copyright notice, this
21 * list of conditions and the following disclaimer in the documentation and/or
22 * other materials provided with the distribution.
23 *
24 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS ""AS IS""
25 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
26 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
27 * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR
28 * ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
29 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
30 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
31 * ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
32 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
33 * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
34 */
35 #include "Tpm.h"
36 #include "PolicyDuplicationSelect_fp.h"
37
38 #if CC_PolicyDuplicationSelect // Conditional expansion of this file
39
40 /*(See part 3 specification)
41 // allows qualification of duplication so that it a specific new parent may be
42 // selected or a new parent selected for a specific object.
43 */
44 // Return Type: TPM_RC
45 // TPM_RC_COMMAND_CODE 'commandCode' of 'policySession' is not empty
46 // TPM_RC_CPHASH 'cpHash' of 'policySession' is not empty
47 TPM_RC
TPM2_PolicyDuplicationSelect(PolicyDuplicationSelect_In * in)48 TPM2_PolicyDuplicationSelect(
49 PolicyDuplicationSelect_In *in // IN: input parameter list
50 )
51 {
52 SESSION *session;
53 HASH_STATE hashState;
54 TPM_CC commandCode = TPM_CC_PolicyDuplicationSelect;
55
56 // Input Validation
57
58 // Get pointer to the session structure
59 session = SessionGet(in->policySession);
60
61 // cpHash in session context must be empty
62 if(session->u1.cpHash.t.size != 0)
63 return TPM_RC_CPHASH;
64
65 // commandCode in session context must be empty
66 if(session->commandCode != 0)
67 return TPM_RC_COMMAND_CODE;
68
69 // Internal Data Update
70
71 // Update name hash
72 session->u1.cpHash.t.size = CryptHashStart(&hashState, session->authHashAlg);
73
74 // add objectName
75 CryptDigestUpdate2B(&hashState, &in->objectName.b);
76
77 // add new parent name
78 CryptDigestUpdate2B(&hashState, &in->newParentName.b);
79
80 // complete hash
81 CryptHashEnd2B(&hashState, &session->u1.cpHash.b);
82
83 // update policy hash
84 // Old policyDigest size should be the same as the new policyDigest size since
85 // they are using the same hash algorithm
86 session->u2.policyDigest.t.size
87 = CryptHashStart(&hashState, session->authHashAlg);
88 // add old policy
89 CryptDigestUpdate2B(&hashState, &session->u2.policyDigest.b);
90
91 // add command code
92 CryptDigestUpdateInt(&hashState, sizeof(TPM_CC), commandCode);
93
94 // add objectName
95 if(in->includeObject == YES)
96 CryptDigestUpdate2B(&hashState, &in->objectName.b);
97
98 // add new parent name
99 CryptDigestUpdate2B(&hashState, &in->newParentName.b);
100
101 // add includeObject
102 CryptDigestUpdateInt(&hashState, sizeof(TPMI_YES_NO), in->includeObject);
103
104 // complete digest
105 CryptHashEnd2B(&hashState, &session->u2.policyDigest.b);
106
107 // set commandCode in session context
108 session->commandCode = TPM_CC_Duplicate;
109
110 return TPM_RC_SUCCESS;
111 }
112
113 #endif // CC_PolicyDuplicationSelect