Lorenz cipher machine, used in World War II to encrypt communications of the German High CommandĬryptography, 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. JSTOR ( March 2021) ( Learn how and when to remove this template message).Unsourced material may be challenged and removed. Please help improve this article by adding citations to reliable sources.
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