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 "Policy_AC_SendSelect_fp.h"
37
38 #if CC_Policy_AC_SendSelect // Conditional expansion of this file
39
40 /*(See part 3 specification)
41 // allows qualification of attached component and object to be sent.
42 */
43 // Return Type: TPM_RC
44 // TPM_RC_COMMAND_CODE 'commandCode' of 'policySession' is not empty
45 // TPM_RC_CPHASH 'cpHash' of 'policySession' is not empty
46 TPM_RC
TPM2_Policy_AC_SendSelect(Policy_AC_SendSelect_In * in)47 TPM2_Policy_AC_SendSelect(
48 Policy_AC_SendSelect_In *in // IN: input parameter list
49 )
50 {
51 SESSION *session;
52 HASH_STATE hashState;
53 TPM_CC commandCode = TPM_CC_Policy_AC_SendSelect;
54
55 // Input Validation
56
57 // Get pointer to the session structure
58 session = SessionGet(in->policySession);
59
60 // cpHash in session context must be empty
61 if(session->u1.cpHash.t.size != 0)
62 return TPM_RC_CPHASH;
63 // commandCode in session context must be empty
64 if(session->commandCode != 0)
65 return TPM_RC_COMMAND_CODE;
66 // Internal Data Update
67 // Update name hash
68 session->u1.cpHash.t.size = CryptHashStart(&hashState, session->authHashAlg);
69
70 // add objectName
71 CryptDigestUpdate2B(&hashState, &in->objectName.b);
72
73 // add authHandleName
74 CryptDigestUpdate2B(&hashState, &in->authHandleName.b);
75
76 // add ac name
77 CryptDigestUpdate2B(&hashState, &in->acName.b);
78
79 // complete hash
80 CryptHashEnd2B(&hashState, &session->u1.cpHash.b);
81
82 // update policy hash
83 // Old policyDigest size should be the same as the new policyDigest size since
84 // they are using the same hash algorithm
85 session->u2.policyDigest.t.size
86 = CryptHashStart(&hashState, session->authHashAlg);
87 // add old policy
88 CryptDigestUpdate2B(&hashState, &session->u2.policyDigest.b);
89
90 // add command code
91 CryptDigestUpdateInt(&hashState, sizeof(TPM_CC), commandCode);
92
93 // add objectName
94 if(in->includeObject == YES)
95 CryptDigestUpdate2B(&hashState, &in->objectName.b);
96
97 // add authHandleName
98 CryptDigestUpdate2B(&hashState, &in->authHandleName.b);
99
100 // add acName
101 CryptDigestUpdate2B(&hashState, &in->acName.b);
102
103 // add includeObject
104 CryptDigestUpdateInt(&hashState, sizeof(TPMI_YES_NO), in->includeObject);
105
106 // complete digest
107 CryptHashEnd2B(&hashState, &session->u2.policyDigest.b);
108
109 // set commandCode in session context
110 session->commandCode = TPM_CC_AC_Send;
111
112 return TPM_RC_SUCCESS;
113 }
114
115 #endif // CC_PolicyDuplicationSelect