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Cambridge IGCSE Computer Science

2.3Encryption

Encryption in Cambridge IGCSE Computer Science: what the syllabus expects you to know, the learning objectives and how to practise.
Subtopic17 practice questions1 lesson

Learning objectives

What the syllabus expects you to be able to do.

  1. 2.3.1Explain why data is encrypted when it is transmitted.
  2. 2.3.2Explain symmetric and asymmetric encryption, including public and private keys.

Lessons

  • Encryption: symmetric and asymmetric keys

    30 min

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Sample question

A sample question on this topic. Answer it, check it, then read the worked answer.

Encryption: sample question

1 mark

What is the main purpose of encrypting data before it is transmitted?

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Turn Encryption into a strength.

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