1tpm_changeownerauth(8)      System Manager's Manual     tpm_changeownerauth(8)
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5                     TPM Management - tpm_changeownerauth
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NAME

8       tpm_changeownerauth - change the authorization data associated with the
9       owner or SRK
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SYNOPSIS

12       tpm_changeownerauth [OPTION]
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DESCRIPTION

16       tpm_changeownerauth allows for changing the authorization data for the
17       TPM owner or the TPM's Storage Root Key (via the TPM_ChangeAuthOwner
18       API).  This operation prompts for current password, followed by the new
19       password and a confirmation of the new password. The --owner option
20       changes the TPM owner password and --srk option changes the TPM's SRK
21       password. The --well-known option is used when SRK or owner passwords
22       need to be changed and current owner password is a secret of zeros,
23       --set-well-known option changes current password to a secret of zeros,
24       both options do not work by themselves, they must be used with --owner
25       and --srk options to indicate which of these passwords will be changed.
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28       -h, --help
29              Display command usage info.
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31       -v, --version
32              Display command version info.
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34       -l, --log [none|error|info|debug]
35              Set logging level.
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37       -u, --unicode
38              Use TSS UNICODE encoding for passwords to comply with
39              applications using TSS popup boxes
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41       -o, --owner
42              Change the authorization data for the TPM owner.
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44       -s, --srk
45              Change the authorization data for the TPM's Storage Root Key.
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47       -g, --original_password_unicode
48              Use TSS UNICODE encoding for original password to comply with
49              applications using TSS popup boxes
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51       -n, --new_password_unicode
52              Use TSS UNICODE encoding for new password to comply with
53              applications using TSS popup boxes
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55       -z, --well-known
56              Change password to a new one when current owner password is a
57              secret of all zeros (20 bytes of zeros). It must be specified
58              which password (owner, SRK or both) to change
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60       -r, --set-well-known
61              Change password to a secret of all zeros (20 bytes of zeros). It
62              must be specified which password (owner, SRK or both) to change
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65       SEE ALSO
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67       tpm_version(1), tpm_takeownership(8), tcsd(8)
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REPORTING BUGS

71       Report bugs to <trousers-users@lists.sourceforge.net>
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75TPM Management                    2005-05-06            tpm_changeownerauth(8)
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