Hugo Koch
Koch’s patent belongs to the small group of early rotor-machine developments that made automated ciphering a practical engineering field and set the stage for later systems such as Enigma.
Hugo Alexander Koch was a Dutch inventor associated with an early rotor-machine patent. His 1919 application described electromechanical approaches to combining substitution and transposition for cipher communications.
Rotor-machine era
Rotor mechanisms were developed independently by several inventors around the First World War. They automated changing substitution alphabets and became one of the most consequential machine-cipher technologies of the twentieth century.
Historical care
Koch should not be treated as the sole inventor of the rotor machine or of Enigma. His patent is instead one documented thread in a contemporaneous, international line of development.
In memoriam
Koch died in 1928. His patent record remains useful evidence for the early technical history of rotor ciphers.
Timeline
- 1870-03-09Born in Delft, the Netherlands.
- 1919-10-07Files a Dutch patent application for a rotor cipher machine.
- 1927Assigns rights connected with his patent to Arthur Scherbius.
- 1928-03-03Dies in Düsseldorf, Germany.
Hugo Koch
- Type
- Person
- Era
- 1910s-1928
- Born
- 1870
- Died
- 1928
- Known for
- Rotor-machine patent; Electromechanical ciphering; Early rotor-machine history
- Tags
- cryptography, rotor-machines, cipher-machines, patents
Created by Joas A Santos · Something wrong or want it removed? Open an issue.