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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 ...
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Virtual Enigma 3D [16] JavaScript: Wehrmacht, Kriegsmarine M4: No: No Terry Long Enigma Simulator [17] MacOS: Kriegsmarine M3: No: No Paul Reuvers Enigma Simulator for RISC OS [18] RISC OS: Kriegsmarine M3, M4, G-312 Abwehr: No: No Enigma Windows Simulator [19] Windows: Wehrmacht, Luftwaffe: No: No Dirk Rijmenants Enigma Simulator v7.0 [20 ...
The German Lorenz SZ 42 cipher machine contained 12 pinwheels, with a total of 501 pins. In cryptography, a pinwheel was a device for producing a short pseudorandom sequence of bits (determined by the machine's initial settings), as a component in a cipher machine. A pinwheel consisted of a rotating wheel with a certain number of positions on ...
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The cipher, known today as the Wheel Cipher or the Jefferson Disk, although never actually built, was theorized as a spool that could jumble an English message up to 36 characters. The message could be decrypted by plugging in the jumbled message to a receiver with an identical cipher. [5]
Cipher disks had many small variations on the basic design. Instead of letters it would occasionally use combinations of numbers on the outer disk with each combination corresponding to a letter. To make the encryption especially hard to crack, the advanced cipher disk would only use combinations of two numbers.
A secret decoder ring (or secret decoder) is a device that allows one to decode a simple substitution cipher—or to encrypt a message by working in the opposite direction. [ 1 ] As inexpensive toys, secret decoders have often been used as promotional items by retailers, as well as radio and television programs, from the 1930s through to the ...