Modes of Operation – Computerphile

You don’t just ‘run a cipher’ – you need a mode of operation. Dr Mike Pound explains some relative to the Feistel cipher.

**This video was filmed before any social distancing guidelines came into effect**

Feistel Cipher Video:

Mike’s code:

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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