Explain the difference between symmetric and asymmetric encryption.

The distinction between symmetric and asymmetric encryption is fundamental to understanding how data security is implemented in various contexts. In symmetric encryption, the same key is utilized for both the encryption and decryption processes. This means that both the sender and the recipient must keep this key secret and securely share it before communication can occur. This simplicity allows for faster processing because there is no need to handle multiple keys.

On the other hand, asymmetric encryption employs a pair of keys: a public key and a private key. The public key is distributed widely and used to encrypt data, while the private key is kept confidential by its owner and is required for decryption. This method enhances security, particularly in key exchange scenarios, since the private key never needs to be shared.

The correct answer highlights the use of a pair of keys in asymmetric encryption while noting the same key usage in symmetric encryption, which is a critical feature that differentiates the two approaches. Understanding this key management aspect aids in grasping the overall advantages and use cases for both encryption types in secure communications.