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Tspi_TPM_ClearOwner(3)	   Library Functions Manual	Tspi_TPM_ClearOwner(3)

		   TCG Software	Stack Developer's Reference

NAME
       Tspi_TPM_ClearOwner - clear TPM ownership

SYNOPSIS
       #include	<tss/platform.h>
       #include	<tss/tcpa_defines.h>
       #include	<tss/tcpa_typedef.h>
       #include	<tss/tcpa_struct.h>
       #include	<tss/tss_typedef.h>
       #include	<tss/tss_structs.h>
       #include	<tss/tspi.h>

       TSS_RESULT Tspi_TPM_ClearOwner(TSS_HTPM hTPM, TSS_BOOL fForcedClear);

DESCRIPTION
       Tspi_TPM_ClearOwner  wipes  the	TPM  of	everything but its endorsement
       key. It will wipe the SRK, so anything locked to	the SRK	will also dis-
       appear when this	command	is executed.  This is the only way to be  cer-
       tain  that keys are gone, as it is the only way to guarantee that noth-
       ing can keep a copy of the key. You must	assert either  physical	 pres-
       ence or owner authorization in order to use this	command.

PARAMETERS
   hTPM
       The hTPM	parameter is used to specify the handle	of the TPM object.

   fForcedClear
       The  fForcedClear parameter is used to tell whether this	command	is be-
       ing executed with owner authorization or	 with  physical	 presence.  If
       FALSE,  then  TPM  owner	 authorization is used.	If TRUE, then physical
       presence	is required to clear the TPM.

RETURN CODES
       Tspi_TPM_ClearOwner returns TSS_SUCCESS on success,  otherwise  one  of
       the following values is returned:

       TSS_E_INVALID_HANDLE
	      hTPM is not a valid handle.

       TSS_E_INTERNAL_ERROR
	      An internal SW error has been detected.

CONFORMING TO
       Tspi_TPM_ClearOwner  conforms  to  the Trusted Computing	Group Software
       Specification version 1.1 Golden

SEE ALSO
       Tspi_TPM_TakeOwnership(3)

TSS 1.1				  2004-05-25		Tspi_TPM_ClearOwner(3)

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