tpm2_nvwrite man page

tpm2_nvwrite(1) — Write data to a Non-Volatile (NV) index.


tpm2_nvwrite [Options] FILE


tpm2_nvwrite(1) - Write data specified via FILE to a Non-Volatile (NV) index. If FILE is not specified, it defaults to stdout.


Common Options

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

This collection of environment variables that may be used to configure the various TCTI modules available.

The values passed through these variables can be overridden on a per-command basis using the available command line options, see the TCTI_OPTIONS section.

The variables respected depend on how the software was configured.

Tcti Options

This collection of options are used to configure the varous TCTI modules available. They override any environment variables.

Password Formatting

Passwords are interpreted in two forms, string and hex-string. A string password is not interpreted, and is directly used for authorization. A hex-string, is converted from a hexidecimal form into a byte array form, thus allowing passwords with non-printable and/or terminal un-friendly characters.

By default passwords are assumed to be in the string form. Password form is specified with special prefix values, they are:


To write the file to index 0x150016:

tpm2_nvwrite -x 0x1500016 -a 0x40000001


0 on success or 1 on failure.


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SEPTEMBER 2017 tpm2-tools General Commands Manual