Answer to Question 1
The five components are plaintext, encryption algorithm, key or key value, key space, and ciphertext. Plaintext is the original message or document that is created by the user and is in human-readable form. The encryption algorithm is the set of procedures or mathematical functions used to encrypt or decrypt a message. The key or key value is the secret value used with the algorithm to transform the message. Key space refers to the large number of possible key values created by the algorithm to use when transforming the message. Ciphertext is the message or document that has been encrypted into unreadable form.
Answer to Question 2
back-end appliance
