1tpm_changeownerauth(8) System Manager's Manual tpm_changeownerauth(8)
2
3
4
5 TPM Management - tpm_changeownerauth
6
8 tpm_changeownerauth - change the authorization data associated with the
9 owner or SRK
10
12 tpm_changeownerauth [OPTION]
13
14
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.
26
27
28 -h, --help
29 Display command usage info.
30
31 -v, --version
32 Display command version info.
33
34 -l, --log [none|error|info|debug]
35 Set logging level.
36
37 -u, --unicode
38 Use TSS UNICODE encoding for passwords to comply with
39 applications using TSS popup boxes
40
41 -o, --owner
42 Change the authorization data for the TPM owner.
43
44 -s, --srk
45 Change the authorization data for the TPM's Storage Root Key.
46
47 -g, --original_password_unicode
48 Use TSS UNICODE encoding for original password to comply with
49 applications using TSS popup boxes
50
51 -n, --new_password_unicode
52 Use TSS UNICODE encoding for new password to comply with
53 applications using TSS popup boxes
54
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
59
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
63
64
65 SEE ALSO
66
67 tpm_version(1), tpm_takeownership(8), tcsd(8)
68
69
71 Report bugs to <trousers-users@lists.sourceforge.net>
72
73
74
75TPM Management 2005-05-06 tpm_changeownerauth(8)