Press enter after choosing selection

Secret Codes #5

In Secret Codes #4 you solved a Caesar cipher (you did solve it, right?). That cipher shifted each letter of a message to another letter in the alphabet a fixed number of positions away. So it's one form of substitution cipher.

The enciphered message here doesn't change letters into other letters, but scrambles the message in a particular way. It's a transposition cipher. Welcome to rail fence cryptography!

Rail fence ciphers are used to write a message in a zigzag form, then the letters are ordered linearly from left to right. What you need to know is how many "rails" there are -- HORIZONTAL lines -- as the key. Here's an example of how to encipher a message with a key of 4. The arrow shows the direction to write the message.

 

method to encipher text using rail fence

 

This badge has been awarded to 306 players

Sign in to see clues and check your progress on this badge

Comments

I'm really enjoying these Secret Code badges! Thank you for the mind-bending fun! I'm excited to see the next interesting and fun challenge. Thank you!

Game
SummerGame2021

Difficulty
★★☆☆ 2 of out 4 difficulty

Badge Points
100

Back to play.aadl.org