1) Cryptanalysis 2) Cryptanalytics 3) Cryptography 4) Science 5) Scientific discipline 
• (n.) Secret or enigmatical language.
science concerned with data communication and storage in secure and usually secret form. It encompasses both cryptography and cryptanalysis.[4 related articles]
Cryp·tol'o·gy noun [ Greek 
cryptography, cryptology 1. The science or study of secret writing, especially codes and ciphers. 2. The procedures and methods of making and using codes and ciphers. 3. The procedures and methods of making and using secret languages; such as, codes or ciphers.
cryptography. · the science and study of cryptanalysis and cryptography.
the science of analyzing and deciphering codes and ciphers and cryptograms