Origins and History
Design and Mechanics
Encryption and Decryption
Ciphers
100
What was the M-94 created for?

WWII

100

The M-94 cipher consists of a series of?

Disks

100

How do you encrypt and decrypt on the M-94 cipher

The rotating disks in the M-94 cipher are used to encrypt and decrypt messages.

100

What is a Cipher?


A cipher is a method or algorithm used to encrypt and decrypt information

200

Whose idea was the design of the M-94 based on?

Thomas Jefferson

200

What is each disk marked by?

Letter of the alphabet 

200

What is encryption?

the process of transforming plaintext (readable data) into ciphertext (encoded data) to protect its confidentiality.

300

Who created the M-94?

William Friedman

300

How many disks are on most M-94?

25


300

What is Decryption?

the reverse process of encription, where ciphertext is transformed back into plaintext.

400

How many possible answers are there to a M-94 Cipher that consists of 25 disks with 26 characters each

25 factoral

400

What are the three mathematical operations and principles used by Ciphers. 

substitution, transposition, and permutations