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The Confederate Cipher Disk is made of brass. The outer disk has a diameter of approx. 2 1/4 inch, whilst the inner disk measures approx 1 1/2 inch. On each of the disks, the alphabet is written out clockwise in the usual order (A-Z).
- Cryptology
American cryptography of the period was little advanced from...
- Cryptology
30 Ιουλ 2014 · A precision laser engraved wood version of this famous cipher which was used for the encryption of secret messages of the Confederacy during the American Civil War (1861-1865). Difficult to ...
The Confederate Cipher Disc was a mechanical wheel cipher consisting of two concentric discs, each with the 26 letters of the Latin alphabet, that was used for the encryption of secret messages of the Confederacy during the American Civil War (1861-1865).
17 Μαρ 2016 · The Disks could be used as simple substitution cipher by setting the wheels at a known alignment, such as using setting the inner wheel letter A with the outer wheel letter D as shown in the photo of the Confederate Cipher above, but this would have been quite easy to decode.
24 Αυγ 2018 · This chapter looks at the cipher systems used by both the Union and Confederate sides during the American Civil War. It also presents a description of the biggest cryptanalytic breakthrough of the nineteenth century, the breaking of the unbreakable cipher, the Vigenère.
15 Απρ 2021 · Confederate generals used Vigenère regularly during the civil war, and their messages were routinely cryptanalzed by Union officers. Figure 21.3: Confederate Cipher Disk for implementing the Vigenère cipher
After the war, a Confederate crypto officer on Gen. Joseph Johnston’s staff wrote: “Col. E [Benjamin S. Ewell] taught me the cipher & the password, or keyword, to read the dispatches. . . The system was only to put the most important words of a message into cipher - & occasionally an unimportant one to mislead - so as to prevent detection.
