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The Confederate Cipher Disk: (A Polyalphabetic cipher disk), was a mechanical wheel cipher consisting of two concentric disks, each with the 26 letters of the Latin alphabet, that was used for the encryption of messageges.
- Cryptology
American cryptography of the period was little advanced from...
- Cryptology
The cipher disk can be used in one of two ways. The code can be a consistent monoalphabetic substitution for the entire cipher or the disks can be moved periodically throughout the cipher making it polyalphabetic.
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).
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).
The cipher disk came into large· scale use in the United States for the first time in the Civil War. The Federals' Chief Signal Officer patented a version of it, very similar to the original Italian disk, for use in flag signaling.
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.
Cipher Disk. A Confederate cipher disk is also said to be for Vigenere cipher (see, for example, a Crypto Museum site). At the back of the disk is an inscription "F. Labarre" (who created it) and "Richmond VA". Only five are extant today.
