tpm_setclearable - Online Linux Manual PageSection : 8
Updated : 2005-05-05
Source : TPM Management
TPM Management - tpm_setclearable
NAMEtpm_setclearable − disable TPM clear operations

SYNOPSIStpm_setclearable [OPTION]

DESCRIPTIONtpm_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 ALSOtpm_version(1), tpm_takeownership(8), tpm_clear(8), tcsd(8)

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