Cryptology

Front

What is the result of applying an encryption algorithm to plain text?

Back

Cipher text

Front

What is a 4X5 matrix cipher used for?

Back

To encrypt messages by rearranging the letters in a grid format.

Front

What is the process of converting cipher text back to the original plain text called?

Back

Decryption

Front

What is a Caesar cipher?

Back

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

Front

Who was the first known user of the Caesar cipher?

Back

Julius Caesar

Front

What does the term 'cipher text' refer to?

Back

The encrypted output of an encryption algorithm.

Front

What is the purpose of encryption?

Back

To protect the confidentiality of information by transforming it into an unreadable format.

Front

What is the difference between encryption and decryption?

Back

Encryption transforms plain text into cipher text, while decryption converts cipher text back into plain text.

Front

What is a substitution cipher?

Back

A method of encryption where each letter in the plaintext is replaced with another letter.

Front

What is the significance of the shift value in a Caesar cipher?

Back

It determines how many positions each letter in the plaintext is shifted to create the cipher text.