Karl de Leeuw

According to our database, Karl de Leeuw authored at least 12 papers between 1993 and 2024.

Collaborative distances:

• Dijkstra number of four.
• Erdős number of four.

2024

Keys with nomenclatures in the early modern Europe.

Beáta Megyesi, Crina Tudor, Benedek Láng, Anna Lehofer, Nils Kopal, Karl de Leeuw, Michelle Waldispühl

Cryptologia, March, 2024

2020

Decryption of historical manuscripts: the DECRYPT project.

Beáta Megyesi, Bernhard Esslinger, Alicia Fornés, Nils Kopal, Benedek Láng, George Lasry, Karl de Leeuw, Eva Pettersson, Arno Wacker, Michelle Waldispühl

Cryptologia, 2020

2018

The Solving of a Fleissner Grille during an Exercise by the Royal Netherlands Army in 1913.

Karl de Leeuw

Proceedings of the 1st International Conference on Historical Cryptology, 2018

2015

J. F. W. Nuboer and the Reintroduction of Machine Cryptography by the Royal Netherlands Navy, 1915-1940.

Karl de Leeuw

Cryptologia, 2015

2013

Review of <i>Forschungsstelle Langeveld: Duits Afluisterstation in bezet Nederland</i> by Hans Knap.

Karl de Leeuw

Cryptologia, 2013

Questions related to Bitcoin and other Informational Money

Jan A. Bergstra, Karl de Leeuw

CoRR, 2013

Bitcoin and Beyond: Exclusively Informational Monies

Jan A. Bergstra, Karl de Leeuw

CoRR, 2013

2007

Preface.

Karl de Leeuw

Sci. Comput. Program., 2007

2003

The Dutch Invention of the Rotor Machine, 1915-1923.

Karl de Leeuw

Cryptologia, 2003

2001

Johann Friedrich Euler (1741-1800): Mathematician and Cryptologist at the Court of the Dutch Stadholder William V.

Karl de Leeuw

Cryptologia, 2001

1995

A Turning grille from the Ancestral Castle of the Dutch Stadtholders.

Karl de Leeuw, Hans van der Meer

Cryptologia, 1995

1993

A Homophonic Substitution in the Archives of the Last Great Pensionary of Holland.

Karl de Leeuw, Hans van der Meer

Cryptologia, 1993