AS & A Level Computer Science 9618 Chapter 21 Security Notes
This topic focuses on the critical aspects of Encryption, Encryption Protocols, and Digital Certificates. Encryption ensures that sensitive data is protected during transmission, using algorithms to convert information into unreadable formats unless decrypted with the appropriate key. Encryption protocols, such as TLS, establish secure communication channels by encrypting data exchanged between devices. Digital certificates play a pivotal role in this process by binding public keys to entities, enabling authentication and secure data exchange.
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