SO Codebusters

Which type of code is harder to break?

• Monoalphabetic
• Polyalphabetic

What is the most common letter of the English alphabet (which reveals the languages "fingerprint" when decoding)?

• A
• S
• E
• T

How is cryptology useful in real life?

• It can be used to make entertaining puzzles, movies, books, and art.
• It is necessary to keep financial and personal information safe when communicating digitally. 
• It is used in times of war to keep information confidential.
• All of these answers are correct.

Can you break this code?

• Orange = 10

• Orange = 6

• Orange = 5

• Orange = 2

Who was the first know user of the Caesar Cipher?

• Caesar Romanus

• Julius Caesar

• Alan Turing

• There isn't one

Encrypt the word alphabet using a Caesar cipher with a shift of 3

• DVSDULQV

• DOOFOHDU

• DOSKDEHW

• DORQHBHV

The outer circle represents the original letters and the inner circle represents the encrypted letters. Which of the following deciphers the following word:

UZWMV

• ZEBRA

• ZULUA

• ZIPPO

• ZBRR

Using the substitution cipher of reversing the order of the letters, determine what the word LEMNISCATE would become?

• OVNRMHXZGV

• OVNMRHXZGV

• OVNMRHXGZV

• OVNMRHXZGX