---
name: "yhsm-validate-otp"
section: "1"
platform: "linux"
package: "yhsm-validation-server"
version: "1.2.1-1"
release: "Debian 10 (Buster)"
platforms: ["linux"]
url: "https://new.carta.tech/yhsm-validate-otp"
---

# yhsm-validate-otp(1)

Validate an OTP using a YubiHSM.

## NAME

yhsm-validate-otp ‐ Validate an OTP using a YubiHSM.

## SYNOPSIS

**yhsm-validate-otp** *mode* \[*options*\]

## DESCRIPTION

This tool allows simple validation of YubiKey OTP from shell scripts.

## OPTIONS

- **-D**, **--device**

  device file name (default: /dev/ttyACM0).

- **-v**, **--verbose**

  enable verbose operation.

- **--debug**

  enable debug printout, including all data sent to/from YubiHSM.

## MODES

**--otp** Validate YubiKey OTP against entry in the YubiHSM internal database.

## EXIT STATUS

- **0**

  YubiHSM keystore successfully unlocked

- **1**

  Failed to unlock keystore

- **255**

  Client ID not found in internal database

## BUGS

Report python-pyhsm/yhsm-validate-otp bugs in the issue tracker ⟨URL: https://github.com/Yubico/python-pyhsm/issues/ ⟩

## SEE ALSO

The home page ⟨URL: https://developers.yubico.com/python-pyhsm/ ⟩

YubiHSMs can be obtained from Yubico ⟨URL: http://www.yubico.com/ ⟩.