The following outline is provided as an overview of and topical guide to cryptography Key (cryptography) a key in cryptography is a piece of information, usually a string of numbers or letters that are stored in a file, which, when processed through a cryptographic algorithm, can encode or decode cryptographic data. Modern cryptography intersects the disciplines of mathematics, computer science, and engineering
Applications of cryptography include atm cards, computer passwords, and electronic commerce. Each key pair consists of a public key and a corresponding private key Cryptography, or cryptology (from ancient greek
A 0 = a, a a = 0, a b = b a, (a b) c = a (b c), (b a) a = b 0 = b for example where denotes the exclusive disjunction (xor) operation [2] this operation is sometimes called modulus 2 addition (or subtraction, which is identical) [3] with this logic, a.