Cryptographic Protocols

The Peruvian Coin Flip #

This is another activity that achieves something that doesn’t seem possible – people who don’t trust each other and can’t see each other are able to agree on the outcome of a random coin flip.

This is an absorbing activity for an individual student or a whole classroom.

No Coin Toss

Activity description (PDF) #

Translations and other versions: #

Videos #

More activities and lessons #

If you want to know more #

Videos #

Other resources #

Great Principles of Computer Science #

  • Communication