1. In this problem we want to encrypt the message CEASE FIRE AT ELEVEN using different keys.

(a) Encrypt the message above using a Caesar Cipher with a shift of 5 letters to the RIGHT. First write the Key below the letters of the alphabet and then encrypt it.

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) Encrypt the message above using the Atbash cipher. First write the Key below the letters of the alphabet and then encrypt it.

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

(c) Encrypt the message above using the following Key.

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

Q M 3 G R A W Z 4 + P B T 2 X C H 7 U E S 8 1 L J F