71 lines
2.4 KiB
C
71 lines
2.4 KiB
C
// This file was extracted from the TCG Published
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// Trusted Platform Module Library
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// Part 3: Commands
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// Family "2.0"
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// Level 00 Revision 01.16
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// October 30, 2014
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#include "InternalRoutines.h"
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#include "ObjectChangeAuth_fp.h"
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#include "Object_spt_fp.h"
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//
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//
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// Error Returns Meaning
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//
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// TPM_RC_SIZE newAuth is larger than the size of the digest of the Name algorithm of
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// objectHandle
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// TPM_RC_TYPE the key referenced by parentHandle is not the parent of the object
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// referenced by objectHandle; or objectHandle is a sequence object.
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//
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TPM_RC
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TPM2_ObjectChangeAuth(
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ObjectChangeAuth_In *in, // IN: input parameter list
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ObjectChangeAuth_Out *out // OUT: output parameter list
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)
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{
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TPMT_SENSITIVE sensitive;
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OBJECT *object;
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TPM2B_NAME objectQN, QNCompare;
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TPM2B_NAME parentQN;
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// Input Validation
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// Get object pointer
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object = ObjectGet(in->objectHandle);
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// Can not change auth on sequence object
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if(ObjectIsSequence(object))
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return TPM_RC_TYPE + RC_ObjectChangeAuth_objectHandle;
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// Make sure that the auth value is consistent with the nameAlg
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if( MemoryRemoveTrailingZeros(&in->newAuth)
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> CryptGetHashDigestSize(object->publicArea.nameAlg))
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return TPM_RC_SIZE + RC_ObjectChangeAuth_newAuth;
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// Check parent for object
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// parent handle must be the parent of object handle. In this
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// implementation we verify this by checking the QN of object. Other
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// implementation may choose different method to verify this attribute.
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ObjectGetQualifiedName(in->parentHandle, &parentQN);
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ObjectComputeQualifiedName(&parentQN, object->publicArea.nameAlg,
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&object->name, &QNCompare);
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ObjectGetQualifiedName(in->objectHandle, &objectQN);
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if(!Memory2BEqual(&objectQN.b, &QNCompare.b))
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return TPM_RC_TYPE + RC_ObjectChangeAuth_parentHandle;
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// Command Output
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// Copy internal sensitive area
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sensitive = object->sensitive;
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// Copy authValue
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sensitive.authValue = in->newAuth;
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// Prepare output private data from sensitive
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SensitiveToPrivate(&sensitive, &object->name, in->parentHandle,
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object->publicArea.nameAlg,
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&out->outPrivate);
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return TPM_RC_SUCCESS;
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}
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