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tpm_changeownerauth(8) [debian man page]

tpm_changeownerauth(8)					      System Manager's Manual					    tpm_changeownerauth(8)

						       TPM Management - tpm_changeownerauth

NAME
tpm_changeownerauth - change the authorization data associated with the owner or SRK SYNOPSIS
tpm_changeownerauth [OPTION] DESCRIPTION
tpm_changeownerauth allows for changing the authorization data for the TPM owner or the TPM's Storage Root Key (via the TPM_ChangeAuthOwner API). This operation prompts for current password, followed by the new password and a confirmation of the new password. The --owner option changes the TPM owner password and --srk option changes the TPM's SRK password. The --well-known option is used when SRK or owner passwords need to be changed and current owner password is a secret of zeros, --set-well-known option changes current password to a secret of zeros, both options do not work by themselves, they must be used with --owner and --srk options to indicate which of these passwords will be changed. -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 -o, --owner Change the authorization data for the TPM owner. -s, --srk Change the authorization data for the TPM's Storage Root Key. -g, --original_password_unicode Use TSS UNICODE encoding for original password to comply with applications using TSS popup boxes -n, --new_password_unicode Use TSS UNICODE encoding for new password to comply with applications using TSS popup boxes -z, --well-known Change password to a new one when current owner password is a secret of all zeros (20 bytes of zeros). It must be specified which password (owner, SRK or both) to change -r, --set-well-known Change password to a secret of all zeros (20 bytes of zeros). It must be specified which password (owner, SRK or both) to change SEE ALSO tpm_version(1), tpm_takeownership(8), tcsd(8) REPORTING BUGS
Report bugs to <trousers-users@lists.sourceforge.net> TPM Management 2005-05-06 tpm_changeownerauth(8)

Check Out this Related Man Page

tpm_setclearable(8)					      System Manager's Manual					       tpm_setclearable(8)

							TPM Management - tpm_setclearable

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

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