On the Subject of The Red Cipher
Seeing red is the standard for this module.
On the module, you will see 3 screens, a keyboard, 2 arrows, and a submit button that displays the current page you're on.
Pressing the right arrow takes you to the next page. Pressing the left arrow takes you to the previous page. There is a total of 2 pages.
On page 1, the top screen shows a 6 letter encrypted word, the middle screen shows 1 or more letter(s). If the encypted word has any Js, replace them with the letter(s) in reading order. After you do all 3 steps, change the letter(s) back into a J.
On page 2, all 3 screens show a word. Depending on the number of ports determine which word is keywords 1, 2, and 3:
|# OF PORTS||TOP||MIDDLE||BOTTOM||0||KW1||KW2||KW3|
After determining your keywords, then take the encrypted word and follow the mechanics down below:
Step 1: Playfair Cipher
For this step use KW1 to create the 1st matrix
To create it, first replace any Js with Is, and remove any duplicates so each letter occurs once. Then take the alphabet and remove any occurences of all the letters in your current key.
If the first digit of the serial number is odd, place the alphabet at the end of your key. Otherwise place the alphabet at the beginning of your key.
Once you have the 25 length string, create a 5x5 matrix of letters.