... encrypted message into its original form.• Plaintext is a message in its original form.• Ciphertext is a message in its encrypted form.Since this course is an introduction to encryption, we should ... confidentiality, integrity, authentication, and non-repudiation. These are the main goals of a good encryption system.It is important to keep in mind that no cryptographic algorithm is known to ... encryption, confidentiality, integrity, authentication, and non-repudiation. Confidentiality is concerned with preventing, detecting, or deterring the improper disclosure of information. Basically,...