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tpm_setclearable(8)	    System Manager's Manual	   tpm_setclearable(8)

		      TPM Management - tpm_setclearable

NAME
       tpm_setclearable	- disable TPM clear operations

SYNOPSIS
       tpm_setclearable	[OPTION]

DESCRIPTION
       tpm_setclearable	reports	the status of the TPM's	flags regarding	how
       the TPM can be cleared.	This is	the default behavior and also
       accessible via the --status option. Requesting a	report of this status
       prompts for the owner password.	The --owner option requests that the
       TPM disable clear operations (via the TPM_DisableOwnerClear API)
       disabling the owner from	clearing out the ownership information.	 This
       operation prompts for the owner password.  This operation is in effect
       until the current owner is cleared.  The	--force	option (via the
       TPM_DisableForceClear API) disables using Phyiscal Presence to
       authorize a clear operation.  This operation does not require
       authorization and will skip the owner password prompt.  This operation
       is only in effect until a reboot.

       -h, --help
	      Display command usage info.

       -v, --version
	      Display command version info.

       -l, --log [none|error|info|debug]
	      Set logging level.

       -u, --unicode
	      Use   TSS	  UNICODE   encoding  for  passwords  to  comply  with
	      applications using TSS popup boxes

       -s, --status
	      Report the status	of flags regarding how the TPM can be cleared.

       -o, --owner
	      Disable use of owner authorization  for  authorizating  a	 clear
	      operation	until a	new owner exists.

       -f, --force
	      Disable  use  of	Physical  Presence  for	 authorizating a clear
	      operation	until a	reboot has occurred.

       -z, --well-known
	      Authenticate using 20 bytes of  zeros  as	 owner	password  (the
	      default  TSS  Well  Known	 Secret),  instead of prompting	for an
	      owner password.

SEE ALSO
       tpm_version(1), tpm_takeownership(8), tpm_clear(8), tcsd(8)

REPORTING BUGS
       Report bugs to <trousers-users@lists.sourceforge.net>

TPM Management			  2005-05-05		   tpm_setclearable(8)

Want to link to this manual page? Use this URL:
<https://man.freebsd.org/cgi/man.cgi?query=tpm_setclearable&sektion=8&manpath=FreeBSD+Ports+15.0>

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