What is the role of encryption in network security?

The role of encryption in network security is primarily about protecting sensitive information from unauthorized access. When data is encrypted, it is transformed into an unreadable format that can only be reverted to its original state using a specific key. This ensures that even if data is intercepted during transmission, it cannot be understood by anyone without the appropriate decryption key.

For instance, when personal information, passwords, or financial transactions are sent over the internet, encryption acts as a safeguard by rendering the data meaningless to unauthorized entities. This is crucial in preventing data breaches and maintaining confidentiality, thereby forming a vital component of overall network security protocols.