Encryption

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Across
  1. 2. the original message to be encrypted
  2. 5. the encrypted message
  3. 7. algorithm: the formula for encrypting the plaintext
Down
  1. 1. the process of converting plaintext into ciphertext
  2. 3. of the alphabet are shifted by a given number
  3. 4. Caesar cipher is most basic type of encryption and the most insecure
  4. 6. a sequence of numbers used to encrypt or decrypt, often data using a mathematical formula