On the Subject of the Branded Pen CM

A machine that knows no bounds when it comes to ciphers.

Create a key using the keyword on screen 1 and a true boolean value. Then create a Branded Pen Key by writing the alphabet on the first row (alphabet row), and the next X rows underneath it being the key where X is equal to the length of the keyword on screen 2 (key rows). Shift each key row so that the left most column spells out the keyword on screen 2 top to bottom. The resulting rows of keys becomes the Branded Pen Key.

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

Encrypt Instructions

• Find the Nth letter of the encrypted word in the bottom key row of the Branded Pen Key.
• Replace that letter with the letter in the alphabet row in the same column.
• Continue this process with the remaining key rows, going from bottom to top, until the top key row is reached.
• The last letter you end up on becomes your Nth decrypted letter.

Decrypt Instructions

• Find the Nth letter of the encrypted word in the alphabet row of the Branded Pen Key.
• Replace that letter with the letter in the top key row in the same column.
• Continue this process with the remaining key rows, going from top to bottom, until the bottom key row is reached.
• The last letter you end up on becomes your Nth decrypted letter.

Example 1

Encrypted Word: RJUZDQ
Screen 1: TAILOR
Screen 2: BIKE
Using Encrypt Rules

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

R → W → I → A → V
J → E → V → T → U
U → L → P → P → L
Z → Q → E → H → G
D → Z → L → B → A
Q → J → Z → X → R

Decrypted Word: VULGAR

Example 2

Encrypted Word: REMHXQK
Screen 1: SCALP
Screen 2: MOD
Using Decrypt Rules

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

R → B → Q → W
E → R → E → H
M → S → F → I
H → V → I → M
X → I → Y → P
Q → P → B → E
K → Y → M → R

Decrypted Word: WHIMPER