On the Subject of the Dual 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.

If the Submit Button is white, follow the instructions under Encrypt Instructions. Otherwise follow the instructions under Decrypt Instructions.

Encrypt Instructions

• Take the Nth letter of the encrypted word, find it in Reflector B, then find the letter in the same position in Reflector A. This is your 1st intermediate letter.
• Find the 1st intermediate letter in Reflector B, then find the letter in that position in Reflector A. This is your 2nd intermediate letter.
• Find the 2nd intermediate letter in Reflector B, then find the letter in that position in Reflector A. This is your Nth decrypted letter.
• Convert the Nth letter of the keyword on screen 3 into ternary.
• If you are at an odd step, shift the row in Reflector B that contains the second intermediate letter to the left by the two most significant digits taken as a ternary number, and shift the column in Reflector A that contains the first intermediate letter down by the least significant digit.
• If you are at an even step, shift the column in Reflector B that contains the second intermediate letter down by the most significant digit, and shift the row in Reflector A that contains the first intermediate letter to the left by the two least significant digits taken as a ternary number.
• 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.

Decrypt Instructions

• Take the Nth letter of the encrypted word, find it in Reflector A, then find the letter in the same position in Reflector B. This is your 1st intermediate letter.
• Find the 1st intermediate letter in Reflector A, then find the letter in that position in Reflector B. This is your 2nd intermediate letter.
• Find the 2nd intermediate letter in Reflector A, then find the letter in that position in Reflector B. This is your Nth decrypted letter.
• Convert the Nth letter of the keyword on screen 3 into ternary.
• If you are at an odd step, shift the row in Reflector B that contains the first intermediate letter to the left by the two most significant digits taken as a ternary number, and shift the column in Reflector A that contains the second intermediate letter down by the least significant digit.
• If you are at an even step, shift the column in Reflector B that contains the first intermediate letter down by the most significant digit, and shift the row in Reflector A that contains the second intermediate letter to the left by the two least significant digits taken as a ternary number.
• 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.

Ternary Table

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

Example 1

Encrypted Word: CVWX
Screen 3: BAG
Using Encrypt Rules

K	I	B	L	E	A	C	D	F
G	H	J	M		N	O	P	Q
R	S	T	U	V	W	X	Y	Z
P	I	X	E	A	B	C	D	F
G	H	J	K		L	M	N	O
Q	R	S	T	U	V	W	Y	Z

C → C → C → C
B → 002

K	I	B	L	E	A	O	D	F
G	H	J	M		N	X	P	Q
R	S	T	U	V	W	C	Y	Z
P	I	X	E	A	B	C	D	F
G	H	J	K		L	M	N	O
Q	R	S	T	U	V	W	Y	Z

V → W → C → O
A → 001

K	I	B	L	E	A	O	D	F
G	H	J	M		N	X	P	Q
S	T	U	V	W	C	Y	Z	R
P	I	X	E	A	B	C	D	F
G	H	J	K		L	M	N	O
Q	R	S	T	U	V	W	Y	Z

W → Y → Z → R
G → 021

K	I	B	L	E	A	Y	D	F
G	H	J	M		N	O	P	Q
S	T	U	V	W	C	X	Z	R
P	I	X	E	A	B	C	D	F
G	H	J	K		L	M	N	O
S	T	U	V	W	Y	Z	Q	R

X → B → A → E

Decrypted Word: CORE

Example 2

Encrypted Word: JUROFBO
Screen 3: JOUST
Using Decrypt Rules

G	L	O	W	A	B	C	D	E
F	H	I	J		K	M	N	P
Q	R	S	T	U	V	X	Y	Z
A	B	D	E	F	G	H	I	J
K	M	N	P		Q	T	U	V
W	X	Y	Z	S	C	R	O	L

J → P → V → C
J → 101

G	L	O	W	A	V	C	D	E
F	H	I	J		B	M	N	P
Q	R	S	T	U	K	X	Y	Z
A	B	D	E	F	G	H	I	J
P	Q	T	U		V	K	M	N
W	X	Y	Z	S	C	R	O	L

U → S → Y → O
O → 120

G	L	O	W	A	V	C	D	E
F	H	I	J		B	M	N	P
X	Y	Z	Q	R	S	T	U	K
A	B	D	E	S	G	H	I	J
P	Q	T	U		V	K	M	N
W	X	Y	Z	F	C	R	O	L

R → F → P → N
U → 210

G	L	O	W	A	V	C	D	E
F	H	I	J		B	M	N	P
X	Y	Z	Q	R	S	T	U	K
A	B	D	E	S	G	H	I	J
P	Q	T	U		V	K	M	N
O	L	W	X	Y	Z	F	C	R

O → D → I → T
S → 201

G	L	O	W	A	V	C	D	E
H	I	J	B		M	N	P	F
X	Y	Z	Q	R	S	T	U	K
A	B	T	E	S	G	H	I	J
P	Q	W	U		V	K	M	N
O	L	D	X	Y	Z	F	C	R

F → N → K → R
T → 202

G	L	O	W	A	V	C	D	F
H	I	J	B		M	N	P	K
X	Y	Z	Q	R	S	T	U	E
A	B	T	E	S	G	H	I	J
M	N	P	Q		W	U	V	K
O	L	D	X	Y	Z	F	C	R

B → Q → X → O
J → 101

G	L	O	W	A	V	C	D	F
H	I	J	B		M	N	P	K
Y	Z	Q	R	S	T	U	E	X
A	B	T	X	S	G	H	I	J
M	N	P	E		W	U	V	K
O	L	D	Q	Y	Z	F	C	R

O → T → Z → L

Decrypted Word: CONTROL