Encryption

Question 1

What is encryption

Answer 1

It the process of keeping data secure when it’s being transmitted.

Question 2

What happens in a symmetric encryption?

Answer 2

1. The sender uses a key called “private key” to encrypt the data before transmitting it.
2. The receiver decrypts the data using the same private key that was exchanged with the sender in a process called “ key exchange “ .
3. This method is usually faster making it suitable for encrypting large amounts of data.
4. The down sides can be that is someone else captures the key and decrypts all the data intercepted.

Question 3

What happens in an asymmetric encryption?

Answer 3

1. It uses 2 keys:
   - public key for encryption
   - private key for decryption
2. The receiver will publicly share their public key.
3. The sender will use the receiver’s public key to encrypt the data.
4. Only the receiver with their private key will be able to decrypt the message.
5. It’s typically slower than asymmetric encryption.
6. It’s generally used for more secure and smaller data transactions eg passwords and bank details.