Thursday, November 16, 2017

[Activity] Using the Cipher Disk

Directions

Now that you have created your Cipher Disk it is time to crack some codes! Below you will find two coded messages. For the first, the key is provided for you. For the second, you need to use frequency analysis to try and crack the code.

First Message

Key = 15

NDJ PGT P RDST RGPRZTG TMIGPDGSXCPXGT!

Second Message

Key = 9

2 9 19 17 1 9 0 13 15 0 23 1 1.

Third Message

For this message you do not have the key. You will need to use frequency analysis to help you break the code. Hint: What are the most common letters in the English language?

1 13 0 12 16 0 9 24 20 22 9 22 7 20 14 4 14 4 14 7 4 15!