CrosswordMint
Legendary Cryptic Codes and Ciphers
Moderate difficulty suitable for most players
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Across
  • 1. Ancient Spartan cylinder cipher tool for secret messages
  • 2. Code reference in the 2009 cryptographic thriller novel
  • 3. Basic component rearranged in most substitution ciphers
  • 5. Polyalphabetic cipher using a keyword for encryption
  • 8. A cipher combining substitution and transposition
  • 12. Simple substitution cipher named after a Roman leader
  • 13. Numerical character often included in modern cryptography
  • 14. Native American code used extensively in WWII communications
  • 16. Code using dots and dashes for telegraphic communication
Down
  • 4. Simple letter-shift cipher rotating alphabet by thirteen places
  • 6. First digraph substitution cipher devised for British military
  • 7. Classical Hebrew cipher that reverses the alphabet
  • 9. Artist's name used as a code keyword in some puzzles
  • 10. Alphabetic characters used by ancient Germanic tribes
  • 11. Metaphor for a secured message needing decrypting
  • 15. German cipher machine famously cracked during WWII
  • 17. Unsolved cipher from a notorious 1960s serial killer

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