Tspi_TPM_ClearOwner(3)Tspi_TPM_ClearOwner(3)
TCG Software Stack Developer's Reference
NAMETspi_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);
DESCRIPTIONTspi_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 CODESTspi_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 TOTspi_TPM_ClearOwner conforms to the Trusted Computing Group Software
Specification version 1.1 Golden
SEE ALSOTspi_TPM_TakeOwnership(3)TSS 1.1 2004-05-25 Tspi_TPM_ClearOwner(3)
