Modern cryptography exists at the intersection of the disciplines of mathematics, computer science, electrical engineering, communication science, and physics. More generally, cryptography is about constructing and analyzing protocols that prevent third parties or the public from reading private messages various aspects in information security such as data confidentiality, data integrity, authentication, and non-repudiation are central to modern cryptography. German Lorenz cipher machine, used in World War II to encrypt very-high-level general staff messagesĬryptography, or cryptology (from Ancient Greek: κρυπτός, romanized: kryptós "hidden, secret" and γράφειν graphein, "to write", or -λογία -logia, "study", respectively ), is the practice and study of techniques for secure communication in the presence of adversarial behavior.
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