Encryption Part 3

Front

What is a Caesar Cipher?

Back

A substitution cipher where each letter in the plaintext is 'shifted' a certain number of places down or up the alphabet.

Front

How do you encode a message using a Caesar Cipher with a shift of +5?

Back

Each letter in the message is replaced by the letter that is 5 positions later in the alphabet.

Front

What is the key in a Caesar Cipher?

Back

The number of positions each letter is shifted in the alphabet.

Front

If 'hello' is encrypted to 'khoor' using a Caesar Cipher, what is the shift value?

Back

The shift value is 3.

Front

How do you encrypt the word 'alphabet' using a Caesar Cipher with a shift of 3?

Back

The encrypted word is 'DOSKDEHW'.

Front

What is a Vigenère Cipher?

Back

A method of encrypting alphabetic text by using a simple form of polyalphabetic substitution.

Front

How do you encode a word using a Vigenère Cipher?

Back

You use a keyword to determine the shift for each letter in the plaintext.

Front

What is the keyphrase in the Vigenère Cipher example 'I will miss this class' with the key 'LONLINESS'?

Back

The keyphrase is 'LONLINESS'.

Front

What is the encoded result of the word 'MISS' using the Vigenère Cipher with the key 'LONLINESS'?

Back

The encoded result is 'ZMKK'.

Front

What is a Rail Fence Cipher?

Back

A form of transposition cipher that writes the plaintext in a zigzag pattern across multiple lines.