9618- Computer Science: Unit 17 Security

17 Security
17.1 Encryption, Encryption Protocols and Digital certificates
Show understanding of how encryption works Notes and guidance Including the use of public key, private key, plain text, cipher text, encryption, symmetric key
cryptography and asymmetric key cryptography

How the keys can be used to send a private message from the public to an individual/ organisation

How the keys can be used to send a verified message to the public
How data is encrypted and decrypted, using symmetric and asymmetric cryptography

Purpose, benefits and drawbacks of quantum cryptography
Show awareness of the Secure Socket Layer (SSL)/ Transport Layer Security (TLS) Purpose of SSL / TLS

Use of SSL/TLS in client-server communication
Situations where the use of SSL/TLS would be appropriate
Show understanding of digital certification How a digital certificate is acquired
How a digital certificate is used to produce digital signatures