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Cryptology is the art and science of codemaking and codebreaking. According to legend, when Julius Caesar sent messages to his trusted associates, he didn't trust the messengers. So he devised a "cryptosystem" or "cipher" - a method of disguising messages so that only certain people could see through the disguise - and replaced (in terms of our alphabet) every A with a D, every B with an E, every C with an F, and so on. Only those who knew the "Shift by Three" rule could decipher his message (called a "cryptogram").
Like Caesar, if you are creating and using a cryptosystem, you are practicing "Cryptography." On the other hand, if you are trying to break an opponent's cryptosystem, you are practicing "Cryptanalysis." NSA/CSS practices the art and science of "cryptology," which is the study of both cryptography and cryptanalysis.
- Definition from National Security Agency
Pages in category "Cryptology"
The following 80 pages are in this category, out of 80 total.
