Multi-Alphabet Substitution

Question 1

Cipher Disk

Answer 1

A literal disk used to encrypt a message. Each time you turned Z disk, a new cipher was used.

Question 2

Leon Alberti 1466

Answer 2

Created Cipher Disk

Question 3

Vigenere Cipher

Answer 3

Enycrypting text by using a series of different Caesar ciphers based on the letters of a keyword. Example, cat is the word, horse is the keyword, jok is the cipher text.

Question 4

Giovan Battista Bellaso 1533

Answer 4

Invented Vigenere Ciphere

Question 5

Friedrich Kasiski 1863

Answer 5

First person to publish a successful general attack on the Vigenere cipher.

Question 6

Playfair Cipher

Answer 6

The Playfair cipher uses a five-by-five table containing a keyword or key phrase. To generate the key table, one would first fill in the spaces in the table with the letters of the keyword (dropping any duplicate letters), then fill the remaining spaces with the rest of the letters of the alphabet in order.

Question 7

Charles Wheatstone 1854

Answer 7

Invented Playfair Cipher

Question 8

ADFGX Cipher

Answer 8

This was a transposition cipher which used a modified Polybius square with a single columnar transposition used to encode a 36-letter alphabet. This was actually an extension of an earlier cipher called ADFGX.

Question 9

Colonel Fritz Nebel 1918

Answer 9

Invented ADFGX Cipher