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Man Pages


Manual Reference Pages  -  TPM_SETCLEARABLE (8)

TPM Management - tpm_setclearable

NAME

tpm_setclearable - disable TPM clear operations

CONTENTS

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>
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TPM Management TPM_SETCLEARABLE (8) 2005-05-05

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