Browse Items (14 total)
- Collection: Cipher Tools and Machines
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The Culper Code Book
The Culper Code Book was used during The American Revolutionary War in 1778 by George Washington's Culper Spy Ring. Developed by Ben Tallmadge, it consisted of 763 numerical codes to represent various words, names, and locations. This code book was…
Confederate Cipher Disk
The Confederate Cipher Disk was used in The American Civil War by the Confederate Army. Created by Francis LaBarre and based on the Vigenère Cipher, it consisted of two brass discs with the alphabet on each. As a mechanical cipher tool, it allowed…
Giddings Field Message Book
The Giddings Field Message Book was used in 1898 during the Spanish-American War. Designed by Major Howard A. Giddings of the Brigadier Signal Officer Office of the Connecticut National Guard, it composed of a pocket pad with a built in US Army…
M-94
The M-94 was a cipher device based off the polyalphabetic manual substitution cipher. It was created by US Army major Joseph Mauborgne in 1917 with inspiration from a similar device invented by Thomas Jefferson in 1795. In 1921, it was introduced to…
Tags: M-94
NESTOR
NESTOR is the NSA-developed speech encryption used by American forces during the Vietnamese War. The encryption was compatible between several devices, including the KY-38 manpack unit, KY-8 vehicular unit, and KY-28 aircraft unit.
Tags: NESTOR, Vietnam War