Symmetric vs. Asymmetric Encryption:

Symmetric encryption uses a single shared key to both encrypt and decrypt data. This means that the same key is used for both encryption and decryption processes. On the other hand, asymmetric encryption involves a pair of keys - a public key (used for encryption) and a private key (used for decryption).

Example of when to use each:

Symmetric Encryption:

Symmetric encryption is commonly used in scenarios where secure communication or data transfer between two parties who already have the shared key is required. For example, symmetric encryption is often used for encrypting files stored on a local machine or for securing communication between devices on a secure network.

Asymmetric Encryption:

Asymmetric encryption is ideal for scenarios where secure communication between parties who have not shared keys beforehand is needed. For instance, asymmetric encryption is commonly used for secure online transactions, email communications, and digital signatures to ensure secure communication over the internet without needing to exchange keys beforehand.