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A2.4 Network securityA2.4.4

Process of encryption and digital certificates

Describe the process of encryption and digital certificates

SL + HL≈ 55 minCommand term: DescribePremium

In this lesson

  • The difference between symmetric and asymmetric cryptography
  • How public and private keys are used for confidentiality and for digital signatures
  • The role of digital certificates in establishing secure network connections
  • Why encryption keys must be managed carefully

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What's inside

  1. LearnEncryption and symmetric cryptography
  2. CheckQuick check
  3. LearnAsymmetric cryptography: public and private keys
  4. LabKeys and certificates
  5. LearnDigital certificates
  6. CheckFrom key pair to padlock
  7. LearnEncryption key management
  8. ExamWorked exam answer
  9. ReviewMistakes examiners see
  10. Exam practiceExam-style questions

Ends with 5 exam-style questions worth 14 marks, with a self-marking markscheme.