The Dutch Invention of the Rotor Machine, 1915–1923

Leeuw, Karl de

doi:10.1080/0161-110391891775

Cited by 9 publications

(4 citation statements)

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“…The cryptographic security depends upon the number of rotors and other intrinsic settings. The idea of rotor cipher is much fascinating and widely used to build many secure ciphers during mid-70ś and 80ś [67]- [69]. The proposed system uses the idea of rotor substitution cipher to achieve image encryption using chaotic maps.…”

Section: Rotor Cipher/machinementioning

confidence: 99%

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A Color Image Encryption Algorithm Based on One Time Key, Chaos Theory, and Concept of Rotor Machine

et al. 2020

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An innovative method proposed for encrypting color images is comprised of one-time keys and chaos theory using a distinctive concept of rotor machine. The novelty of this scheme is that the rows and columns of 2-dimensional images are converted into circular object called rotor and can be rotated at 360 degrees in clockwise or anti clockwise direction. The rotation will change the existing rotor into new one and can be used in substitution process of plain image. This process can be repeated β times and each time a new rotor is created just by a simple rotation. The rotation is performed in terms of pixels so degree of angle is converted into number of pixels. Using this method, same object with new face (after rotation) is used for encryption. The pixels of color image are permuted using the sorted index of logistic sequence. Then, three pseudo-random images are created from Piecewise Linear Chaotic Map (PWLCM). For substitution, both the permuted color channels and pseudo-random images are transformed into rotors. The angle is obtained from Chen chaotic system. The one-time keys are for chaotic maps are generated by using 512-bits hash of plain image. The simulated outcomes demonstrate that the proposed system has high quality of results and requires only single round of encryption to achieve high encryption along with high robustness against the transmission noises.

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Section: Rotor Cipher/machinementioning

confidence: 99%

“…Later, Edward Hebern, Arvid Damm, Hugo Koch and Arthur Scherbius also created their own cryptographic rotor machines. The quite famous rotor machine is Enigma developed by Germans during WWII [67]- [69]. A Rotor Machine consists of multiple independent rotatable cylindrical plates called rotors.…”

Section: Introductionmentioning

confidence: 99%

A Color Image Encryption Algorithm Based on One Time Key, Chaos Theory, and Concept of Rotor Machine

et al. 2020

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“…This was not the case at all. The Royal Netherlands Navy had already been experimenting with cipher machines during the First World War [7] and decided to adopt cipher machines in 1931, though on a small scale. The renewed interest in cipher machines marked a change in attitude, however, and was related to a growing awareness of the impact of the use of radio on warfare at sea.…”

Section: Introductionmentioning

confidence: 99%

“…On 12 February 1921, a second model was devised by captain-lieutenant Conrad Carel Käyser (1876-1939), the commander of naval base Willemsoord (Figure 3). 7 Käyser, a passionate exploration traveler with a strong interest in astronomy and map-making, had been serving in the East Indies as aide-de-camp to rear-admiral Bauduin on De Zeven Provinciën [2]. Therefore, he knew about the experiments with the rotor machine, because it was on board this ship that it was first put into practice.…”

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confidence: 99%

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

Leeuw¹

2015

Cryptologia

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After experimenting with a rotor cipher machine in the first world war, the Dutch Navy resorted to the use of codebooks in combination with various types of cipher disks. During the next ten years, military exercises showed time and again that none of these devices functioned well. In 1931, a careful examination of radio practices of the belligerents by J. W. F. Nuboer led to a tightening of signaling procedures and a revision of the signal book for tactical use. Cipher machines were reintroduced for strategic communication.

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Deciphering Enigma

Cuff,

Ginoux

2024

History of Mechanism and Machine Science

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The Dutch Invention of the Rotor Machine, 1915–1923

Cited by 9 publications

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A Color Image Encryption Algorithm Based on One Time Key, Chaos Theory, and Concept of Rotor Machine

A Color Image Encryption Algorithm Based on One Time Key, Chaos Theory, and Concept of Rotor Machine

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

Deciphering Enigma

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