NAME

       tpm_nvread

SYNOPSIS

       tpm_nvread [OPTIONS]

DESCRIPTION

       tpm_nvread reads data from an NVRAM area and either displays them or writes them into a file. The user
       must provide the index of the NVRAM area. If the user provided the number of bytes to read then this will
       be the maximum number of bytes that will be read from the NVRAM area, otherwise the whole NVRAM area will
       be read. Some NVRAM areas only allow read sizes of zero, i.e., NVRAM area with index 0. Optionally an
       offset into the NVRAM area can be given where the reading of the data is to start. 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
           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 read from the NVRAM area.  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 from where to start reading.  The parameter may either  be  a  decimal
           number or a hexadecimal number starting with '0x'.

       -f, --filename (optional parameter)
           The  name  of  a  file  the  read data will be written into. If no filename is given the data will be
           printed to stdout.

SEE ALSO

       tpm_nvdefine(8), tpm_nvinfo(8), tpm_nvrelease(8), tpm_nvwrite(8)

REPORTING BUGS

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

TPM Management                                     2011-07-11                                      tpm_nvread(8)