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Tool Factory

Generators & Randomness

TOTP Generator

Create TOTP from the selected options. Enter input, adjust the options, then copy or download the result.

Tool workspace

Your input stays in this browser.

Add the required input to continue.

Needs input

You can run the tool again after any change.

Options

Your result appears here

Create TOTP from the selected options. Enter input, adjust the options, then copy or download the result.

This tool runs open-source code from CyberChef by GCHQ (Apache License 2.0). See open-source credits.

TOTP Generator computes a time-based one-time password from a Base32 shared secret and interval.

It returns a time-dependent TOTP code. The operation runs in your browser. Processing runs in the browser.

Instructions

  1. Provide text or data for this tool.
  2. Provide a valid Base32 secret.
  3. Set code length and interval.
  4. Check clock alignment with the authenticating system.

Example

Input: JBSWY3DPEHPK3PXP

Settings: TOTP Generator: Code length: 6; epoch offset: 0; interval: 30 seconds; name: test.

Result: It returns a time-dependent TOTP code. The operation runs in your browser.

Limits

  • TOTP Generator: The secret is sensitive and must not enter logs.
  • TOTP Generator: Codes expire as the interval advances.
  • TOTP Generator: A generated code does not verify account configuration.

Questions

What input does TOTP Generator accept?

TOTP Generator accepts binary data or a selected file.

Which settings does TOTP Generator provide?

TOTP Generator provides controls for Name, Code length, Epoch offset (T0), Interval (T1).

What does TOTP Generator return?

TOTP Generator returns text. The Time-based One-Time Password algorithm (TOTP) is an algorithm that computes a one-time password from a shared secret key and the current time. It has been adopted as Internet Engineering Task Force standard RFC 6238, is the cornerstone of Initiative For Open Authentication (OAUTH), and is used in a number of two-factor authentication systems. A TOTP is an HOTP where the counter is the current time. Enter the secret as the input or leave it blank for a random secret to be generated. The secret must be a valid base32 string (characters A–Z and 2–7). T0 and T1 are in seconds.