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Summary

To send binary files via a text based system, they'll need encoding. Dr Steve Bagley takes us through the attachment system used ... It's absolutely everywhere, but what is TLS and where did it come from? Dr Mike Pound explains the background behind this ... In the early days the UK had its own thoughts on how Spies used to meet in the park to exchange code words, now things have moved on - Robert Miles explains the principle of ... Audible free book: audible.com/ Breaking the unbreakable loop. More on how self-modifying code can be a neat hack, that's almost unmaintainable. Dr Julian ... Professor Edward Frenkel discusses the mathematics behind the NSA Surveillance controversy - see links in full description. Just what are elliptic curves and why use a graph shape in cryptography? Dr Mike Pound explains. Mike's myriad Diffie-Hellman ... End to end encryption, government ministers are again talking about stopping it. What is it and why might that be a bad idea? Kerberos is an authentication method - Dr Mike Pound explains how it works so neatly. EXTRA BITS: Kerberos Q&A ... Substitution-permutation networks are the basis for almost all modern symmetric cryptography. Dr Mike Pound explains. The Internet is 50 - Dr Julian Onions recalls working to bring the Internet to Nottingham. facebook.com/ How do we exchange a secret key in the clear? Spoiler: We don't - Dr Mike Pound shows us exactly what happens. Mathematics ...