The Peruvian Coin Flip–Cryptographic Protocols

This The Peruvian Coin Flip–Cryptographic Protocols activity & project also includes:

A digital flip. Introduce your classes to cryptographic protocols using and, or, and not gates. Groups create a complete circuit to convert a binary number into another one. This type of one-way function allows pupils to verify the correct pathway. The activity is the second in a three-part series on encryption.

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Instructional Ideas

  • Use when discussing how to create codes
  • Have pupils design their own circuits
Classroom Considerations

  • Some individuals might have difficulty with the gates and determining the outputs

  • Provides a circuit for learners to try
  • Includes reading information on why cryptography is important

  • Deciphering where the arrow points in the hand-drawn circuit is difficult