Enigma Cipher Tool

An online Enigma Machine for Call of Cthulhu, Delta Green and other TTRPGs.

Welcome to our Enigma Cipher Tool, a digital rendition of the classic Enigma machine used in the early to mid-20th century. The tool is tailored for GMs and players of Call of Cthulhu and other tabletop role-playing games. It offers a unique way to encode and decode messages, adding an extra layer of depth and realism to your gameplay. Whether you're passing secret notes or uncovering cryptic clues, our tool immerses you in the era's ambiance, providing an engaging experience that's both fun and historically intriguing.

How the tool works: The Enigma Cipher Tool operates on a simple substitution cipher mechanism, modeled loosely after the real Enigma machine's complexity. It uses a set of three rotors to create a polyalphabetic cipher, where each letter of the input text is shifted according to the rotor settings, resulting in an encoded message that can be quite challenging to decipher without the correct settings.

Set the Rotors: Start by setting each of the three rotors to a number between 0 and 35. These numbers determine the shift applied to each letter of your message.
Input the Text: Type the message you want to encode in the input field. The tool only accepts letters A-Z and numbers 0-9.
Encode: Click the "Encode" button. The encoded message will appear in the output field.
Copy Results: After encoding, you can click the "Copy Results" button to copy both the encoded text and the rotor settings to your clipboard. This makes it easy to share the exact settings along with the encoded message for in-game use.

ROTOR 1

ROTOR 2

ROTOR 3

Direct References: Use in-game items that directly reference the required rotor settings. For example, players might find a note with a sequence of numbers written on it, which corresponds to the rotor settings.
Color-Coded Hints: Associate each rotor with color and leave colored items or markings around that hint toward the numbers.
Repetition: Repeat the rotor settings in different contexts throughout the game. The repetition will help the numbers stick in players' minds.
Numerical Props: Provide physical props like numbered keys or tokens. The numbers on these props can be used as the rotor settings.
In-Game Events: Tie the rotor settings to important in-game events or dates that the characters will easily remember, such as the founding date of an in-game institution.
Simple Math: Use basic arithmetic embedded in the narrative. For instance, "The number of crows on the fence plus the number of hours till midnight."
Rhymes and Songs: Include nursery rhymes or simple songs with numbers in the lyrics that can be used as hints.
Annotated Maps: Use maps with specific locations marked by numbers, suggesting the order of the rotor settings.
Clocks and Timers: Set clocks or timers in the scene that point to specific times which can be translated into rotor settings.
Inventory Items: -Have inventory items with serial numbers or quantities that hint at the rotor settings.
NPC Dialogue: Use straightforward NPC dialogue such as a guard saying, "I keep thinking about my lucky numbers: 5, 12, and 22."
Written Messages: Leave simple notes or letters that include the numbers, perhaps as a list of "important dates to remember."
Pictograms: Use simple pictorial representations where the quantity of items in a picture indicates the rotor settings.