Encryption

Question 1

What key is used to encrypt and decrypt data?

Answer 1

Private key

Question 2

What is symmetric encryption

Answer 2

Symmetric encryption is encryption where you need the private key in order to encrypt and decrypt the data. Meaning that the key must also be transferred to the recipient.

Question 3

What security problem does symmetric encryption pose?

Answer 3

The key can be intercepted as easily as the ciphertext message.

Question 4

What is an example of symmetric encryption?

Answer 4

An example of a Symmetric encryption cipher is the Vigenere Cipher
You must encrypt your plaintext using a specific key
Then use the same key to decrypt it at the other end

Question 5

What is asymmetric encryption?

Answer 5

This uses two separate but related keys
One key, known as the public key, is made public so that others wishing to send you data can use this key to encrypt it
The public key cannot decrypt the data
A private key, known only to you, is used to decrypt the data
its similar to a padlock.