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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)