Answer to Question #308694 in Computer Networks for Yanda

Question

Encryption to large extent can been adopted to restrict access to data/information only to intended receiver. With the use of well-labeled diagram, discuss various types of encryption and it's operations.

Answer 1

1.symmetric encryption

In this type of encryption, similar keys are used for both encryption and decryption. It is therefore critical that a secure method is considered to transfer the key between sender and recipient as shown below.

2.Asymmetric encryption

In this type of encryption, it uses the notion of a key pair. Key used for encryption are different from the ones that are used for decryption. One of the keys is typically known as the private key and the other is known as the public key.

The private key is kept secret by the owner and the public key is either shared amongst authorized recipients or made available to the public at large.

Data encrypted with the recipient’s public key can only be decrypted with the corresponding private key. Data can therefore be transferred without the risk of unauthorized or unlawful access to the data as shown below.