The art of creating and using cryptosystems. A cryptosystem (or cipher system) is a method of disguising messages so that only certain people can see through the disguise, e.g. encryption, which comes at varying degrees of strength from immediately solvable to virtually impossible to break.
Cryptanalysis is the art of breaking cryptosystems - seeing through the disguise even when you're not supposed to be able to. Cryptology is the study of both cryptography and cryptanalysis.
Almost all computer systems in the Galaxy employ some level of cryptography to increase security of data, often relying on such methods as quantum cryptography. Military and governmental networks are naturally the most protected in this regard, as are the mind-linking data transmissions of the Collective Network.
- Codebreaker Device, the ultimate cryptanalysis tool.