tpm_setclearable man page
TPM Management - tpm_setclearable
tpm_setclearable — disable TPM clear operations
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.
tpm_version(1), tpm_takeownership(8), tpm_clear(8), tcsd(8)
Report bugs to <firstname.lastname@example.org>