Niels O. Faurholt
Retired, DDIS Technical-Historical Collection, Denmark
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Published in: Proceedings of the 1st International Conference on Historical Cryptology HistoCrypt 2018
Linköping Electronic Conference Proceedings 149:23, p. 129-132
NEALT Proceedings Series 34:23, p. 129-132
Published: 2018-06-13
ISBN: 978-91-7685-252-1
ISSN: 1650-3686 (print), 1650-3740 (online)
Willard’s cryptosystem is an unusual system, designed by an otherwise unknown American around 1870. It was used for a short period of time by the Danish Ministry of Foreign Affairs. The article describes the system. Furthermore the article mentions an interesting and lively period of Danish crypto activities 1873 – 1918.
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