tpm_changeownerauth - Man Page

tpm_changeownerauth [OPTION]

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

tpm_version(1), tpm_takeownership(8), tcsd(8)

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