Double Ratchet Messaging Encryption – Computerphile

How does instant messaging encryption protect against attack? Dr Mike Pound on the double ratchet.

Diffie Hellman Key Exchange Explained:
Signal Protocol:
Endianness Explained with an Egg:

This video was filmed and edited by Sean Riley.

Computer Science at the University of Nottingham:

Computerphile is a sister project to Brady Haran’s Numberphile. More at

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