Summary
Def 1
Encryption is a means of securing digital data using one or more mathematical techniques, along with a password or “key” used to decrypt the information. The encryption process translates information using an algorithm that makes the original information unreadable. ref
Def 2
Encryption is the process of using a to convert plain text messages to unreadable ciphertext.
Decryption: is the reverse of that process.
cipher
A cryptographic algorithm, set of mathematical steps taken to secure a message.
ciphertext
(plain text) = ciphertext cryptography messages, plain text message encrypted with cipher.