---
name: "kotp"
section: "1"
platform: "linux"
package: "kerberos4kth-clients"
version: "1.2.2-11.2"
release: "Debian 3.1 (Sarge)"
platforms: ["linux"]
url: "https://new.carta.tech/kotp"
---

# kotp(1)

manages one-time passwords

## NAME

**otp** – manages one-time passwords

## SYNOPSIS

**otp** \[**-dhlor**\] \[**-f** *algorithm*\] \[**-u** *user*\] *sequence-number* *seed*

## DESCRIPTION

The **otp** program initializes and updates your current series of one-time passwords (OTPs).

Use this to set a new series of one-time passwords.  Only perform this on the console or over an encrypted link as you will have to supply your pass-phrase.  The other two parameters are *sequence-number* and *seed*.

Options are:

- **-d**

  To delete a one-time password.

- **-f**

  Choose a different *algorithm* from the default md5.  Pick any of: md4, md5, and sha.

- **-h**

  For getting a help message.

- **-l**

  List the current table of one-time passwords.

- **-o**

  To open (unlock) the otp-entry for a user.

- **-r**

  To renew a one-time password series.  This operation can be performed over an potentially eavesdropped link because you do not supply the pass-phrase.  First you need to supply the current one-time password and then the new one corresponding to the supplied *sequence-number* and *seed*.

- **-u**

  To choose a different *user* to set one-time passwords for.  This only works when running **otp** as root.

## SEE ALSO

[otpprint(1)](/otpprint/1.md)