1.3.1c Symmetric and Asymmetric Encryption

Question 1

What is encryption?

Answer 1

Encryption is the process of encoding a message so it can be read only by the sender and the intended recipient.

Question 2

What is symmetric Encryption?

Answer 2

Symmetric encryption is when a single key is used to both encrypt and decrypt the message.

Question 3

What do both the recipient and sender need for symmetric encryption?

Answer 3

Both parties need to know the key, and need to keep it secret.

Question 4

Can a key be used multiple times in symmetric encryption?

Answer 4

Yes, but a unique key can also be generated each time.

Question 5

How can a message be cracked with symmetric encryption? (dangers)

Answer 5

Interception of the key.
Duplication of the key production process to acquire a copy of the key.

Question 6

What is Asymmetric Enryption?

Answer 6

Asymmetric encryption is when two different keys are used to encrypt and decrypt the message.

Question 7

Is the key used by the sender and recipient the same in asymmetric encryption?

Answer 7

No, both keys are different, and it is virtually impossible to derive one key from the other, so the method is much more secure.