tpm_setclearable(8)
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>