Cryptography cCrossword Puzzle

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Across
  1. 3. A person who receives an encrypted message and decrypts it.
  2. 5. A cipher that arranges letters in a zigzag pattern.
  3. 7. The scrambled, unreadable version of a message after encryption.
  4. 9. The process of reverting ciphertext.
  5. 10. A numeric or alphanumeric string used to encrypt or decrypt data.
Down
  1. 1. The opposite of secure; vulnerable to attacks or interception.
  2. 2. Making plaintext unreadable.
  3. 4. Caesar didn't trust them.
  4. 6. A cipher method that arranges plaintext into a grid and reads it in a different order to encrypt the message.
  5. 7. Cryptography is the science of using mathematics to encrypt and decrypt data
  6. 8. The readable form of a message before encryption.