7400 competition entry: Data encryption and decryption system using 74xx logic gates

Nakul built a 7400 based data encryption and decryption device. It works on the cellular automaton algorithm:

Encryption and decryption plays a vital role in today’s digital world. So we thought of implementing an encrypting and decrypting device using only 74xx logic chips. The encryption algorithm is based on cellular automaton. Rule 30 of the cellular automaton produces can be used as a random number generator. A cellular automaton is basically an array containing 1s and 0s whose next value depends on the previous value of the array based on a particular rule.

Build something that uses or abuses a logic chip and get amazing boards, tools, and other swag. The Open 7400 Logic Competition promotes awareness of the basic building blocks of modern circuits. Devious geeks ignited the computer revolution with discrete logic computers, what can you do? Details and entry form here.

Via the contact form.

Join the Conversation

77 Comments

  1. I have seen your work behind this.. No one can think about it.. Awesome guys.. you did it…

  2. I vote for data encryption and decryption system using 74xx logic gates..really good work friends..:)

  3. i liked the concept used for data encryption and decryption system using 74xx logic gates and my vote goes for the same…. good work :) …keep it u up!

  4. i vote for data encryption and decryption system using 74xx logic gates…i like it the most..very good work..:)

  5. i vote for data encryption and decryption system using 74xx logic gates. . . great work. . . amazing. . .keep it up. . . :-)

  6. i vote for data encryption and decryption system using 74xx logic gates. . . . . wonderful work guys.

  7. good work guys…my vote goes to data encryption and decryption system using 74xx logic gates..:)

  8. my vote goes to data encryption and decryption system using 74xx logic gates..good work friends..:)

  9. guys amazing work :)… my vote goes for data encryption and decryption system using 74xx logic gates!

  10. Excellent work!… my vote goes to data encryption and decryption system using 74xx logic gates :)

  11. i vote for data encryption and decryption system using 74xx logic gates :)..like it the most!!!…:)

  12. data encryption and decryption system using 74xx logic gates..really good concept..my vote goes for the same..:)

  13. my vote goes to data encryption and decryption system using 74xx logic gates..nice work friends..:)

  14. i vote for data encryption and decryption system using 74xx logic gate..very well implemented..:)..keep it up..

Leave a comment

Your email address will not be published. Required fields are marked *

Notify me of followup comments via e-mail. You can also subscribe without commenting.