143. AQA A Level (7517) SLR21 - 4.9.3 Symmetric and asymmetric encryption

AQA Specification Reference A Level 4.9.3.2 In this video we take a look at the two main forms of encryption you need to know about for the exam: Symmetric and Asymmetric. Key questions: - How does encryption work? - What is the difference between symmetric and asymmetric encryption? 00:00 Symmetric and asymmetric encryption 00:06 Intro 00:11 What is encryption? 00:21 Simple encryption using Caesar cipher 00:54 Symmetric encryption 01:43 Asymmetric encryption 05:33 Key questions 05:45 Going beyond the specification 05:52 How easy is it to crack an encryption key? 06:56 Outro Why do we disable comments? We want to ensure these videos are always appropriate to use in the classroom. However, we value your feedback, and are happy to consider amendments due to inaccuracies. Please get in touch with us directly at: admin@craigndave.co.uk For all our support resources please visit: http://craigndave.org/ http://student.craigndave.org/