Caesar Shift

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Across
  1. 5. Number of positions to move each letter
  2. 6. First name of the Roman general who used this cipher
  3. 8. Another name for the shifting technique used
  4. 9. Reverse the encryption process
Down
  1. 1. Type of cipher that replaces letters with other letters
  2. 2. The original unencoded message
  3. 3. The 26 letters used in English encoding
  4. 4. Process of converting plaintext to ciphertext
  5. 7. The number that determines how far to shift