RSA is widespread on the Internet, and uses large prime numbers - but how does it work? Dr Tim Muller takes us through the details.

Apologies for the poor audio quality of this video which is due to the remote nature in which it was recorded.

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This video was filmed and edited by Sean Riley.

Computer Science at the University of Nottingham: https://bit.ly/nottscomputer

Computerphile is a sister project to Brady Haran's Numberphile. More at http://www.bradyharan.com