DOKK / manpages / debian 12 / tpm2-tools / tss2_nvextend.1.en
tss2_nvextend(1) General Commands Manual tss2_nvextend(1)

tss2_nvextend(1) -

tss2_nvextend [OPTIONS]

fapi-config(5) to adjust Fapi parameters like the used cryptographic profile and TCTI or directories for the Fapi metadata storages.

fapi-profile(5) to determine the cryptographic algorithms and parameters for all keys and operations of a specific TPM interaction like the name hash algorithm, the asymmetric signature algorithm, scheme and parameters and PCR bank selection.

tss2_nvextend(1) - This command performs an extend operation on an NV index (i.e. an NV index that behaves similar to a PCR).

These are the available options:

•
-i, --data=FILENAME or - (for stdin):

The data to be extended into the NV space.

•
-p, --nvPath=STRING:

Identifies the NV space to write.

•
-l, --logData=FILENAME or - (for stdin):

A JSON representation of data to be written to the PCR’s event log. Optional parameter.

This collection of options are common to all tss2 programs and provide information that many users may expect.

•
-h, --help [man|no-man]: Display the tools manpage. By default, it attempts to invoke the manpager for the tool, however, on failure will output a short tool summary. This is the same behavior if the “man” option argument is specified, however if explicit “man” is requested, the tool will provide errors from man on stderr. If the “no-man” option if specified, or the manpager fails, the short options will be output to stdout.

To successfully use the manpages feature requires the manpages to be installed or on MANPATH, See man(1) for more details.

•
-v, --version: Display version information for this tool, supported tctis and exit.

tss2_nvextend --nvPath=/nv/Owner/NvExtend --data=data.file --logData=logData.file

0 on success or 1 on failure.

Github Issues (https://github.com/tpm2-software/tpm2-tools/issues)

See the Mailing List (https://lists.linuxfoundation.org/mailman/listinfo/tpm2)

APRIL 2019 tpm2-tools