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.\" ========================================================================
.\"
.IX Title "tpm_nvdefine 8"
.TH tpm_nvdefine 8 "2011-07-07" "TPM Management" ""
.\" For nroff, turn off justification. Always turn off hyphenation; it makes
.\" way too many mistakes in technical documents.
.if n .ad l
.nh
.SH "NAME"
tpm_nvdefine
.SH "SYNOPSIS"
.IX Header "SYNOPSIS"
\&\fBtpm_nvdefine [\s-1OPTIONS\s0]\fR
.SH "DESCRIPTION"
.IX Header "DESCRIPTION"
\&\fBtpm_nvdefine\fR defines a new \s-1NVRAM\s0 area at the given index and of given
size. The user has to provide the permissions that control access to
the \s-1NVRAM\s0 area.
.PP
Owner authentication is necessary once the \s-1NVRAM\s0 area 0xFFFFFFFF has been
defined. The owner password may be provided on the command line using
the owner password option.
.PP
The following options are supported:
.IP "\fB\-h, \-\-help\fR" 4
.IX Item "-h, --help"
Display command usage info.
.IP "\fB\-v, \-\-version\fR" 4
.IX Item "-v, --version"
Display command version info.
.IP "\fB\-l, \-\-log [none|error|info|debug]\fR" 4
.IX Item "-l, --log [none|error|info|debug]"
Set logging level.
.IP "\fB\-u, \-\-unicode\fR" 4
.IX Item "-u, --unicode"
Use \s-1TSS\s0 \s-1UNICODE\s0 encoding for passwords to comply with applications
using \s-1TSS\s0 popup boxes
.IP "\fB\-y, \-\-owner\-well\-known\fR" 4
.IX Item "-y, --owner-well-known"
Use a secret of all zeros (20 bytes of zeros) as the owner's secret.
.IP "\fB\-z, \-\-area\-well\-known\fR" 4
.IX Item "-z, --area-well-known"
Use a secret of all zeros (20 bytes of zeros) as the \s-1NVRAM\s0 area's secret.
.IP "\fB\-o, \-\-pwdo\fR (optional parameter)" 4
.IX Item "-o, --pwdo (optional parameter)"
The owner password.
.Sp
A password may be directly provided for example by using '\-\-pwdo=password' or
\&'\-opassword'. If no password is provided with this option then the program will
prompt the user for the password.
.IP "\fB\-a, \-\-pwda\fR (optional parameter)" 4
.IX Item "-a, --pwda (optional parameter)"
The \s-1NVRAM\s0 area password.
.Sp
A password may be directly provided for example by using '\-\-pwda=password' or
\&'\-apassword'. If no password is provided with this option then the program will
prompt the user for the password.
.IP "\fB\-i, \-\-index\fR" 4
.IX Item "-i, --index"
The index of the \s-1NVRAM\s0 area.
The parameter must either be a decimal number or a hexadecimal number starting with '0x'.
.Sp
To select the \s-1NVRAM\s0 area with index 0x100, the command line parameter should be '\-i 0x100' or
\&'\-\-index 0x100'.
.IP "\fB\-s, \-\-size\fR" 4
.IX Item "-s, --size"
The size of the \s-1NVRAM\s0 area.
The parameter must either be a decimal number or a hexadecimal number starting with '0x'.
.IP "\fB\-p, \-\-permissions\fR" 4
.IX Item "-p, --permissions"
The access permissions associated with the \s-1NVRAM\s0 area.
The parameter must either be a decimal number or a hexadecimal number staring with '0x'. It is
possible to logically 'or' numbers or strings. The following strings are supported:
.RS 4
.IP "\fB\s-1AUTHREAD\s0\fR" 4
.IX Item "AUTHREAD"
Reading requires \s-1NVRAM\s0 area authorization.
.IP "\fB\s-1AUTHWRITE\s0\fR" 4
.IX Item "AUTHWRITE"
Writing requires \s-1NVRAM\s0 area authorization.
.IP "\fB\s-1PPREAD\s0\fR" 4
.IX Item "PPREAD"
Reading requires physical presence.
.IP "\fB\s-1PPWRITE\s0\fR" 4
.IX Item "PPWRITE"
Writing requires physical presence.
.IP "\fB\s-1OWNERREAD\s0\fR" 4
.IX Item "OWNERREAD"
Reading requires owner authorization.
.IP "\fB\s-1OWNERWRITE\s0\fR" 4
.IX Item "OWNERWRITE"
Writing requires owner authorization.
.IP "\fB\s-1GLOBALLOCK\s0\fR" 4
.IX Item "GLOBALLOCK"
A write to index 0 locks the \s-1NVRAM\s0 area until the next TPM_Startup(\s-1ST_CLEAR\s0)
.IP "\fB\s-1READ_STCLEAR\s0\fR" 4
.IX Item "READ_STCLEAR"
A read with size 0 on the same index prevents further reading until the next TPM_Startup(\s-1ST_CLEAR\s0)
.IP "\fB\s-1WRITE_STCLEAR\s0\fR" 4
.IX Item "WRITE_STCLEAR"
A write with size 0 to the same index prevents further writing until the next TPM_Startup(\s-1ST_CLEAR\s0)
.IP "\fB\s-1WRITEDEFINE\s0\fR" 4
.IX Item "WRITEDEFINE"
A write with size 0 to the same index locks the \s-1NVRAM\s0 area permanently
.IP "\fB\s-1WRITEALL\s0\fR" 4
.IX Item "WRITEALL"
The value must be written in a single operation
.RE
.RS 4
.Sp
An example of a permission parameter is:
.Sp
\&\-\-permissions=\*(L"OWNERREAD|OWNERWRITE\*(R"
.RE
.IP "\fB\fR" 4
.IX Item ""
.SH "SEE ALSO"
.IX Header "SEE ALSO"
\&\fBtpm_nvread\fR(8), \fBtpm_nvwrite\fR(8), \fBtpm_nvrelease\fR(8), \fBtpm_nvinfo\fR(8)
.SH "REPORTING BUGS"
.IX Header "REPORTING BUGS"
Report bugs to <trousers\-users@lists.sourceforge.net>
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