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 appli- cations using TSS popup boxes -n, --new_password_unicode Use TSS UNICODE encoding for new password to comply with applica- tions 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 pass- word (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)
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