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Cryptographic Records Crossword Puzzle for Kids is a hard crossword puzzle with 18 clues covering . Play it online for free below, or create your own crossword with our free crossword maker.

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Cryptographic Records Crossword Puzzle for Kids
Challenge your cryptography knowledge with this hard crossword featuring record-holding riddles and extreme codes. Perfect for advanced 3rd-5th graders fascinated by cryptographic history and puzzles.
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Across
  • 1. Cipher type replacing letters systematically
  • 2. Unbreakable cipher using a random key only once
  • 4. Basic encryption shifting letters a fixed number of places
  • 5. Process of converting information into secret code
  • 6. Famous WWII cipher machine solved by Alan Turing
  • 8. Uses a book’s text as a secret key to encode messages
  • 10. Method to encrypt or hide messages
  • 11. Binary system of dots and dashes for messages
  • 16. Technique exploiting known plaintexts to break ciphers
Down
  • 3. Ancient Hebrew substitution cipher reversing alphabet order
  • 7. Type of cipher using multiple alphabets
  • 9. Cipher mixing substitution and transposition invented in early 1900s
  • 12. Single-letter symbol sometimes used in simple ciphers
  • 13. Name of a famous intercepted coded telegram from WWI
  • 14. Technique to conceal messages within other texts
  • 15. A coded message using substitution or transposition
  • 17. Poly-alphabetic cipher once called 'le chiffre indéchiffrable'
  • 18. Ancient Greek transposition cipher using a wrapped rod
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