Cryptography & Ciphers
Multiple Bombe Cipher Processor
Apply Multiple Bombe 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.
Multiple Bombe Cipher Processor uses unknown-rotor Enigma search to process the supplied input. It repeats the Bombe search across rotor permutations and reflector choices, grouping candidate stops by configuration.
It repeats the Bombe search across rotor permutations and reflector choices, grouping candidate stops by configuration. Processing runs in the browser for this catalog category, so the result depends on the supplied bytes and settings. Processing runs in the browser.
Cipher search explores the configured space; it does not bypass strong encryption or establish evidence authenticity.
Instructions
- Provide text or data for this tool.
- Test the crib in the single Bombe before widening the rotor list. This applies to Multiple Bombe Cipher Processor.
- Limit candidate rotors to reduce the number of browser search runs. This applies to Multiple Bombe Cipher Processor.
Example
Input: Reuse a successful single-Bombe crib, then select a small Standard Enigmas preset.
Settings: Multiple Bombe Cipher Processor: Main rotors requires at least three entries; Reflectors requires at least one. Crib and Crib offset identify the same known plaintext fragment across runs.
Result: It repeats the Bombe search across rotor permutations and reflector choices, grouping candidate stops by configuration. Processing runs in the browser for this catalog category, so the result depends on the supplied bytes and settings.
Limits
- Multiple Bombe Cipher Processor: Adding rotor choices multiplies search work and does not improve a wrong crib.
- Multiple Bombe Cipher Processor: Like the single search, it ignores stepping and ring settings in reported stops.