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tpm_nvwrite(8)							  tpm_nvwrite(8)

NAME
     tpm_nvwrite

SYNOPSIS
     tpm_nvwrite [OPTIONS]

DESCRIPTION
     tpm_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. Option-
     ally 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 pro-
     vided 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 us-
	 ing 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 '--pass-
	 word=password' or -ppassword. If no password is provided then the pro-
	 gram 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 start-
	 ing 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 ALSO
     tpm_nvdefine(8), tpm_nvinfo(8), tpm_nvread(8), tpm_nvrelease(8)

REPORTING BUGS
     Report bugs to <trousers-users@lists.sourceforge.net>

TPM Management			   2017-02-21			  tpm_nvwrite(8)
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