kryptografia

Also known as cryptographic engineering, cryptology, crypto

thumb|alt=Lorenz cipher machine with twelve rotors mechanism|upright=1.5| Lorenz cipher machine, used in [[World War II to encrypt communications of the German High Command]] Cryptography, or cryptology, is the practice and study of techniques for secure communication in the presence of adversarial behavior. More generally, cryptography is about constructing and analyzing protocols that prevent third parties or the public from reading private messages. Modern cryptography exists at the intersection of the disciplines of mathematics, computer science, information security, electrical engin