Cryptology is the study of all things crypto. This includes cryptography, the process of hiding the meaning of a message and revealing it at a later time, as well as cryptanalysis, cryptographic algorithms, cryptosystems, and key management, for example.
Although contemporary cryptosystems use many components and processes, strictly speaking, cryptography requires three components to operate:
A cipher (also called an algorithm). A data manipulation process
A key (also called a cryptovariable). Kept secret and used to impose a unique randomness on the message
A plaintext message. In need of protection
Encryption converts the plaintext message into ciphertext. The plaintext message is processed by the cipher, and the processing ...