Challenging puzzle for experienced crossword solvers
Ancient Codes and Secret Scripts
Explore the world of historical cipher techniques with this challenging crossword featuring famous codes, key cipher terms, and cryptographic methods.
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Across
- 1. The science of encoding and decoding secret messages
- 2. Pre-shared secret for secure cipher communication
- 3. Analysis technique exploiting letter occurrence rates
- 4. Cipher replacing letters with others or symbols
- 5. Code using dots and dashes for transmission
- 8. Matrix-based cipher from linear algebra concepts
- 10. Grid-based cipher named after an ancient historian
- 13. A cipher technique involving extraneous meaningless letters
- 14. Famous WWII cipher machine
- 17. Shift cipher attributed to a Roman leader
Down
- 6. Essential element to unlock many ciphers
- 7. Cipher rearranging letter order without altering them
- 9. Digraph substitution cipher created in 1854
- 11. WWII code based on a Native American language
- 12. Polyalphabetic cipher using a keyword
- 15. Pattern used in rail fence cipher
- 16. Ancient Spartan transposition tool
- 18. Simple substitution cipher with reversed alphabet
- 19. Simple letter-shift cipher rotating alphabet by 13
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