The science of transforming confidential information to make it unreadable to non-authorized parties (see also Public Key, Private Key, DES, RSA, Algorithm)
Another scientific area wherein the results from information theory are applied is cryptology Since the term cryptology is a contraction of the Greek words "kruptos" and "logos", it literally means the study of hiding As such, it deals among others with the development of methods for the enciphering and deciphering of messages"
The science that deals with hidden, disguised, or encrypted communications It embraces communications security and communications intelligence [JP1] (188)
The science of secret writing in all its forms, covering both crytography and cryptanalysis
The study of techniques that can be used to conceal information, or reveal information that has been previously concealed; that is, the combination of cryptanalysis, cryptography and steganography See also: Cryptanalysis Cryptography Decryption Encryption Plaintext Public Key Cryptography Private Key (or Symmetric) Cryptography Steganography
The branch of knowledge which treats of the principles of cryptography and cryptanalytics