---
name: "tpm_takeownership"
section: "8"
platform: "linux"
package: "tpm-tools"
version: "1.3.9.2-0.2"
release: "Debian 13 (Trixie)"
platforms: ["linux"]
url: "https://new.carta.tech/tpm_takeownership"
---

# tpm\_takeownership(8)

setup an owner on the TPM

TPM Management - tpm\_takeownership

## NAME

tpm\_takeownership - setup an owner on the TPM

## SYNOPSIS

**tpm\_takeownership** \[**OPTION**\]

## DESCRIPTION

**tpm\_takeownership** setup an owner on the system's TPM  (via the TPM\_TakeOwnership API).  This operation requires the TPM to be enabled and can be restricted by tpm\_setownable.  The command will prompt for owner and SRK passwords and confirmations of these if executed without either of the **-well-known** options, otherwise, a secret of all zeros is set for the requested password.  After the second confirmation, be patient as the command may take awhile.

- **-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

- **-y**, **--owner-well-known**

  Set a secret of all zeros (20 bytes of zeros) as the owner's secret.

- **-z**, **--srk-well-known**

  Set a secret of all zeros (20 bytes of zeros) as the SRK secret.

## SEE ALSO

[**tpm\_version**(1)](/tpm_version/1.md), [**tpm\_setownable**(8)](/tpm_setownable/8.md), [**tpm\_setenable**(8)](/tpm_setenable/8.md), [**tcsd**(8)](/tcsd/8.md)

## REPORTING BUGS

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