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Cryptography & Ciphers

Typex Cipher Processor

Apply Typex with explicit key, format, and algorithm settings. Enter the data and key material, choose the parameters, then review 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

Remove non-alphabet letters and group output

Your result appears here

Apply Typex with explicit key, format, and algorithm settings. Enter the data and key material, choose the parameters, then review the result.

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

Typex Cipher Processor uses five-rotor Typex simulation to process the supplied input. It transforms text through the five rotors and reflector; strict output can group letters into five-character blocks.

It transforms text through the five rotors and reflector; strict output can group letters into five-character blocks. Processing runs in the browser for this catalog category, so the result depends on the supplied bytes and settings. Processing runs in the browser.

This tool performs the selected algorithm locally; it does not provide application trust or key management.

Instructions

  1. Provide text or data for this tool.
  2. Keep every rotor setting and both wiring controls with the fixture. This applies to Typex Cipher Processor.
  3. Use the matching keyboard emulation mode when converting figures and text. This applies to Typex Cipher Processor.

Example

Input: Use "HELLO" with default rotors, keyboard emulation None, and Strict output enabled.

Settings: Typex Cipher Processor: The fourth and fifth rotors are static; reversal, ring, and initial settings remain relevant. Reflector pairs and the input Plugboard use different wiring notation.

Result: It transforms text through the five rotors and reflector; strict output can group letters into five-character blocks. Processing runs in the browser for this catalog category, so the result depends on the supplied bytes and settings.

Limits

  • Typex Cipher Processor: The included rotor set is an example, not authenticated historical operational key material.
  • Typex Cipher Processor: Strict output can remove unsupported characters.

Questions

What input does Typex Cipher Processor accept?

Typex Cipher Processor accepts text. Encipher/decipher with the WW2 Typex machine. Typex was originally built by the British Royal Air Force prior to WW2, and is based on the Enigma machine with some improvements made, including using five rotors with more stepping points and interchangeable wiring cores. It was used across the British and Commonwealth militaries. A number of later variants were produced; here we simulate a WW2 era Mark 22 Typex with plugboards for the reflector and input. Typex rotors were changed regularly and none are public: a random example set are provided. To configure the reflector plugboard, enter a string of connected pairs of letters in the reflector box, e.g. AB CD EF connects A to B, C to D, and E to F (you'll need to connect every letter). There is also an input plugboard: unlike Enigma's plugboard, it's not restricted to pairs, so it's entered like a rotor (without stepping). To create your own rotor, enter the letters that the rotor maps A to Z to, in order, optionally followed by < then a list of stepping points. More detailed descriptions of the Enigma, Typex and Bombe operations can be found here.

Which settings does Typex Cipher Processor provide?

Typex Cipher Processor provides controls for 1st (left-hand) rotor, 1st rotor reversed, 1st rotor ring setting, 1st rotor initial value, 2nd rotor, 2nd rotor reversed, 2nd rotor ring setting, 2nd rotor initial value, 3rd (middle) rotor, 3rd rotor reversed, 3rd rotor ring setting, 3rd rotor initial value, 4th (static) rotor, 4th rotor reversed, 4th rotor ring setting, 4th rotor initial value, 5th (right-hand, static) rotor, 5th rotor reversed, 5th rotor ring setting, 5th rotor initial value, Reflector, Plugboard, Typex keyboard emulation, Strict output.

What does Typex Cipher Processor return?

Typex Cipher Processor returns text. Encipher/decipher with the WW2 Typex machine. Typex was originally built by the British Royal Air Force prior to WW2, and is based on the Enigma machine with some improvements made, including using five rotors with more stepping points and interchangeable wiring cores. It was used across the British and Commonwealth militaries. A number of later variants were produced; here we simulate a WW2 era Mark 22 Typex with plugboards for the reflector and input. Typex rotors were changed regularly and none are public: a random example set are provided. To configure the reflector plugboard, enter a string of connected pairs of letters in the reflector box, e.g. AB CD EF connects A to B, C to D, and E to F (you'll need to connect every letter). There is also an input plugboard: unlike Enigma's plugboard, it's not restricted to pairs, so it's entered like a rotor (without stepping). To create your own rotor, enter the letters that the rotor maps A to Z to, in order, optionally followed by < then a list of stepping points. More detailed descriptions of the Enigma, Typex and Bombe operations can be found here.