On the Subject of the Triple Triplex Reflector CM
Create a key using the keyword on screen 1 and the Boolean Expression on screen A. Lay the resulting key out in a 3×9 grid with a hole in the center. This will be referred to as Reflector A.
Reflector B is created by doing the same steps to create Reflector A but with the keyword on screen 2 and the Boolean Expression on screen B.
Reflector C is created by doing the same steps to create Reflector A but with the keyword on screen 3 and the Boolean Expression on screen C.
For each letter of the encrypted word, do the following:
- Take the Nth letter of the encrypted word, find it in Reflector A, and replace it with the letter that is in the same position in Reflector B.
- Find this letter in Reflector C and replace it with the letter that is diametrically opposite.
- Find this letter in Reflector B and replace it with the letter that is in the same position in Reflector A.
- Convert the Nth letter of the keyword on screen 4 into ternary.
- Shift Reflector A based on the Most Significant Digit. Shift Reflector B based on the Middle Digit. Shift Reflector C based on the Least Significant Digit.
- Do not move the hole when shifting the reflectors.
- Do this for each letter of the encrypted word to get a decrypted word. Treat the keyword as if it wraps around to the front of itself.
0 | 1 | 2 |
---|---|---|
Shift each row of the reflector to the left by 1. | Shift each column of the reflector down by 1. | Swap the left and right sides of the reflector. Swap the top and bottom rows of the reflector. |
A | B | C | D | E | F | G | H | I | J | K | L | M |
---|---|---|---|---|---|---|---|---|---|---|---|---|
001 | 002 | 010 | 011 | 012 | 020 | 021 | 022 | 100 | 101 | 102 | 110 | 111 |
N | O | P | Q | R | S | T | U | V | W | X | Y | Z |
112 | 120 | 121 | 122 | 200 | 201 | 202 | 210 | 211 | 212 | 220 | 221 | 222 |