| Copiale cipher(noun, expression, technology, entity, history) |
| Dorabella Cipher(noun, expression, technology, entity, history) |
| Markovian Parallax Denigrate(noun, expression, technology, entity, history) |
| Shugborough inscription(noun, expression, technology, entity, history) |
| Smithy code(noun, expression, technology, entity, history) |
| Venona project(noun, expression, technology, entity, history) |
| Voynich manuscript(noun, expression, technology, entity, history) |
| Zimmermann Telegram(noun, expression, technology, entity, history) |
| code talker(noun, expression, technology, entity, history) |
| eleven-b-x-one-thousand-three-hundred-seventy-one(noun, expression, technology, entity, history) |
| Advanced Access Content System encryption key controversy(noun, expression, technology, entity, history) |
| Advanced Encryption Standard process(noun, expression, technology, entity, history) |
| Alphabet Cipher(noun, expression, technology, entity, history) |
| American Black Chamber(noun, expression, technology, entity, history) |
| BATCO(noun, technology, entity, history, cryptography) |
| Babington Plot(noun, expression, technology, entity, history) |
| Babington Plot cipher(noun, expression, technology, entity, history) |
| Battle of Midway(noun, expression, technology, entity, history) |
| Beale cipher(noun, expression, technology, entity, history) |
| Beale ciphers(noun, expression, technology, entity, history) |