tpm_nvwrite(8)tpm_nvwrite(8)NAMEtpm_nvwriteSYNOPSIStpm_nvwrite [OPTIONS]
DESCRIPTIONtpm_nvwrite writes data to an NVRAM area. The user must provide the
index of the NVRAM area as well as the data to write into the NVRAM
area. Optionally an offset into the NVRAM area can be given where the
writing of the data is to start. Similarly the use may provide the
number of bytes to write into the NVRAM area. Some NVRAM areas only
allow write sizes of zero, i.e., NVRAM area index 0. If the NVRAM area
has permission bits set that require owner or NVRAM area
authentication, then the password must be provided via the password
option.
The following options are supported:
-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
-z, --well-known
Use a secret of all zeros (20 bytes of zeros) as either the NVRAM
area or owner secret.
-p, --password
Depending on what type of authentication is required for the NVRAM
area, this must either be the NVRAM area or owner password.
A password may be directly provided for example by using
'--password=password' or -ppassword. If no password is provided
then the program will prompt the user for the password.
-i, --index (optional parameter)
The index of the NVRAM area. The parameter may either be a decimal
number or a hexadecimal number starting with '0x'.
-s, --size
The number of bytes to write to the NVRAM area. This parameter may
be used to truncating the data that are for example read from a
file. The parameter may either be a decimal number or a
hexadecimal number starting with '0x'.
-n, --offset (optional parameter)
The offset into the NVRAM area where to start writing. The
parameter may either be a decimal number or a hexadecimal number
starting with '0x'.
-f, --filename (optional parameter)
The name of a file from which to read data and copy them into the
NVRAM area.
-d, --data (optional parameter)
The data to write into the NVRAM area passed in the command line.
-m, --fill-value (optional parameter)
The byte to fill the NVRAM area with.
SEE ALSOtpm_nvdefine(8), tpm_nvinfo(8), tpm_nvread(8), tpm_nvrelease(8)REPORTING BUGS
Report bugs to <trousers-users@lists.sourceforge.net>
TPM Management 2011-07-11 tpm_nvwrite(8)
