Search results
Results From The WOW.Com Content Network
DeCSS is one of the first free computer programs capable of decrypting content on a commercially produced DVD video disc. It was developed by three people, including Jon Lech Johansen, who faced a criminal trial in Norway for violating DVD copy protection.
A cipher is an algorithm for converting information into code or ciphertext, which can be decrypted with a key. Learn about the origin, evolution and classification of ciphers, from ancient to modern methods, and their applications in cryptography.
A disk cipher device of the Jefferson type from the 2nd quarter of the 19th century in the National Cryptologic Museum. The Jefferson disk, also called the Bazeries cylinder or wheel cypher, [1] was a cipher system commonly attributed to Thomas Jefferson that uses a set of wheels or disks, each with letters of the alphabet arranged around their edge in an order, which is different for each ...
Please help improve this article by adding citations to reliable sources. Unsourced material may be challenged and removed. Unsourced material may be challenged and removed. Find sources: "Straddling checkerboard" – news · newspapers · books · scholar · JSTOR ( January 2020 ) ( Learn how and when to remove this message )
The Enigma machine was a cipher device used by Nazi Germany and other countries to protect secret messages. Learn how it worked, how it was broken by Poland, France, and Britain, and how it influenced World War II.
Tunny was the British code name for the German Lorenz cipher, a rotor stream cipher used by the German Army during World War II. The article explains the history, design and operation of the Lorenz machines and how they were deciphered by British cryptanalysts.
A simple variant is to encrypt by using the Vigenère decryption method and to decrypt by using Vigenère encryption. That method is sometimes referred to as "Variant Beaufort". It is different from the Beaufort cipher , created by Francis Beaufort , which is similar to Vigenère but uses a slightly modified enciphering mechanism and tableau.
A Caesar cipher is a simple encryption technique that shifts each letter in the plaintext by a fixed number of positions in the alphabet. Learn about its history, usage, examples, and variations, such as the Vigenère cipher and the ROT13 system.