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!: youtu.be/VYech-c5Dic
Almost All Web Encryption Works Like This (SP Networks): youtu.be/DLjzI5dX8jc
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