Historical Ciphers

Question 1

Atbash

Answer 1

• Mono-alphabet

* reverses the alphabet

Question 2

Caesar

Answer 2

*mono, chooses a set number by which to shift all letters of a message

Question 3

ROT-13

Answer 3

*mono, rotates all characters 13 letters through the alphabet

Question 4

Cipher Disk

Answer 4

*multi, physical device used to encrypt, used a new cipher each time you turned the disk

Question 5

Vigenere Cipher

Answer 5

*multi - encrypting by using a series of interwoven Caesar ciphers based on letters of a keyword, considered polyalphabetic

Question 6

Playfair Cipher

Answer 6

*multi - 5x5 square key, first fill in spaces with keyword letters and then rest of alphabet in order

Question 7

ADFGVX Cipher

Answer 7

*multi - 6x6 square made up of letters of ADFGVX forming the outer row and column, rest of table is comprised of letters of alphabet including 0-9

Question 8

Enigma Machine

Answer 8

*multi - German electromechanical rotor based cipher system

Question 9

Affine Cipher

Answer 9

*mono - each letter in the alphabet is mapped to numerical equivalent, encrypted using a mathematical function and converted back to a letter