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>