Advanced Encryption Standard – Dr Mike Pound explains this ubiquitous encryption technique.

n.b in the matrix multiplication animation, the matrices are in the incorrect order, but hopefully the animation still helps to illustrate the general idea.

One Encryption Standard to Rule Them All! :
Almost All Web Encryption Works Like This (SP Networks) :
Xor & The Half Adder :
Reed Solomon Encoding :


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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