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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 ...
Too much or too little will cause the hero to overshoot or fall short of the target, and as a result plunge to his death. The player could determine the correct amount of fuel for a starting/destination pair using a code wheel, the "secret decoder wheel" included with the game. [2] [3] This element of the game was actually a form of copy ...
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 ...
Caesar ciphers can be found today in children's toys such as secret decoder rings. A Caesar shift of thirteen is also performed in the ROT13 algorithm, a simple method of obfuscating text widely found on Usenet and used to obscure text (such as joke punchlines and story spoilers), but not seriously used as a method of encryption. [13]
At the end of each show, a secret message was shown on the TV screen. Home users of a Decoder Wheel could then decipher the message. It was a code similar in nature to Superman's Secret Code, used by the Supermen of America /Superman Fan Club, sponsored by DC Comics and appearing in issues of the Superman Family of comics published at that time ...
Among those items were secret decoders, shake-up mugs for drinking Ovaltine (the show's sponsor product) and secret decoder rings for the Little Orphan Annie secret society. [9] The 1934 fan club's member's handbook included a simple substitution cipher with a resulting numeric cipher text.
A wheel cipher being used to encode the phrase "ATTACK AT DAWN." One possible ciphertext is "CMWD SMXX KEIL." The principle upon which the M-94/CSP-488 is based was first invented by Thomas Jefferson in 1795 in his "wheel cypher" but did not become well known, and was independently invented by Etienne Bazeries a century later.
The Cardan grille was invented as a method of secret writing. The word cryptography became the more familiar term for secret communications from the middle of the 17th century. Earlier, the word steganography was common. [citation needed] The other general term for secret writing was cypher - also spelt cipher. There is a modern distinction ...