Encryption

Question 1

What is encryption?

Answer 1

Is the transmission of data from one form to another to present an unauthorized third party from being able to understand it.

Question 2

What is plaintext?

Answer 2

The original data or message.

Question 3

What is a ciphertext?

Answer 3

Encrypted data.

Question 4

What is a cipher?

Answer 4

An encryption method or algorithm.

Question 5

What is a key?

Answer 5

The secret information to lock or unlock the message.

Question 6

What is the one-time pad encryption?

Answer 6

An encryption technique that cannot be cracked, but requires the use of a one-time pre-shared key the same size as, or longer than, the message being sent. In this technique, a plaintext is paired with a random secret key

Question 7

Crypt-analysis and non-random keys

Answer 7

Ciphers that use non-random keys are open to a crypt-analytic attack and be solved given enough time and resources.