Vadim Bendebury | 5679752 | 2015-05-20 10:32:25 -0700 | [diff] [blame] | 1 | // This file was extracted from the TCG Published |
| 2 | // Trusted Platform Module Library |
| 3 | // Part 3: Commands |
| 4 | // Family "2.0" |
| 5 | // Level 00 Revision 01.16 |
| 6 | // October 30, 2014 |
| 7 | |
| 8 | #include "InternalRoutines.h" |
| 9 | #include "PolicyDuplicationSelect_fp.h" |
| 10 | // |
| 11 | // |
| 12 | // Error Returns Meaning |
| 13 | // |
| 14 | // TPM_RC_COMMAND_CODE commandCode of 'policySession; is not empty |
| 15 | // TPM_RC_CPHASH cpHash of policySession is not empty |
| 16 | // |
| 17 | TPM_RC |
| 18 | TPM2_PolicyDuplicationSelect( |
| 19 | PolicyDuplicationSelect_In *in // IN: input parameter list |
| 20 | ) |
| 21 | { |
| 22 | SESSION *session; |
| 23 | HASH_STATE hashState; |
| 24 | TPM_CC commandCode = TPM_CC_PolicyDuplicationSelect; |
| 25 | |
| 26 | // Input Validation |
| 27 | |
| 28 | // Get pointer to the session structure |
| 29 | session = SessionGet(in->policySession); |
| 30 | |
| 31 | // cpHash in session context must be empty |
| 32 | if(session->u1.cpHash.t.size != 0) |
| 33 | return TPM_RC_CPHASH; |
| 34 | |
| 35 | // commandCode in session context must be empty |
| 36 | if(session->commandCode != 0) |
| 37 | return TPM_RC_COMMAND_CODE; |
| 38 | |
| 39 | // Internal Data Update |
| 40 | |
| 41 | // Update name hash |
| 42 | session->u1.cpHash.t.size = CryptStartHash(session->authHashAlg, &hashState); |
| 43 | |
| 44 | // add objectName |
| 45 | CryptUpdateDigest2B(&hashState, &in->objectName.b); |
| 46 | |
| 47 | // add new parent name |
| 48 | CryptUpdateDigest2B(&hashState, &in->newParentName.b); |
| 49 | |
| 50 | // complete hash |
| 51 | CryptCompleteHash2B(&hashState, &session->u1.cpHash.b); |
| 52 | |
| 53 | // update policy hash |
| 54 | // Old policyDigest size should be the same as the new policyDigest size since |
| 55 | // they are using the same hash algorithm |
| 56 | session->u2.policyDigest.t.size |
| 57 | = CryptStartHash(session->authHashAlg, &hashState); |
| 58 | |
| 59 | // add old policy |
| 60 | CryptUpdateDigest2B(&hashState, &session->u2.policyDigest.b); |
| 61 | |
| 62 | // add command code |
| 63 | CryptUpdateDigestInt(&hashState, sizeof(TPM_CC), &commandCode); |
| 64 | |
| 65 | // add objectName |
| 66 | if(in->includeObject == YES) |
| 67 | CryptUpdateDigest2B(&hashState, &in->objectName.b); |
| 68 | |
| 69 | // add new parent name |
| 70 | CryptUpdateDigest2B(&hashState, &in->newParentName.b); |
| 71 | |
| 72 | // add includeObject |
| 73 | CryptUpdateDigestInt(&hashState, sizeof(TPMI_YES_NO), &in->includeObject); |
| 74 | |
| 75 | // complete digest |
| 76 | CryptCompleteHash2B(&hashState, &session->u2.policyDigest.b); |
| 77 | |
| 78 | // clear iscpHashDefined bit to indicate now this field contains a nameHash |
| 79 | session->attributes.iscpHashDefined = CLEAR; |
| 80 | |
| 81 | // set commandCode in session context |
| 82 | session->commandCode = TPM_CC_Duplicate; |
| 83 | |
| 84 | return TPM_RC_SUCCESS; |
| 85 | } |