CrypTool — Ein Open-Source-Projekt in der Praxis

Esslinger, Bernhard

doi:10.1007/s11623-009-0023-5

Cited by 3 publications

(4 citation statements)

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“…Chapter 2 of the book (Esslinger, 2023), written by the same authors as this paper, describes historical cryptology and discusses the corresponding terminology.…”

Section: Related Workmentioning

confidence: 99%

What is the Code for the Code? Historical Cryptology Terminology

Mikhalev¹,

Kopal²,

Esslinger³

et al. 2023

Linköping Electronic Conference Proceedings

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The cross-disciplinary nature of historical cryptology involves the challenge to find a terminology that is both consistent and accepted across the different disciplines and applicable in the single fields. In this paper, we propose a terminology based on concise principles developed by an interdisciplinary group of researchers. We present terms prominent in the study of historical cryptology, define them, and illustrate their usage. Our goal is to initiate and/or continue the discussion of how we use various terms for different types of historical encrypted sources, and their study. Our hope is that this paper will contribute to consistent and systematic usage of terms in the HistoCrypt community.

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“…Chapter 2 of the book (Esslinger, 2023), written by the same authors as this paper, describes historical cryptology and discusses the corresponding terminology.…”

Section: Related Workmentioning

confidence: 99%

What is the Code for the Code? Historical Cryptology Terminology

Mikhalev¹,

Kopal²,

Esslinger³

et al. 2023

Linköping Electronic Conference Proceedings

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“…The autocorrelation of a sequence is an index of the similarity of different sections of the sequence. It is sometimes possible to work out the key length of an encrypted file from its auto correlation.The purpose of this empirical test of independence is to check correlation between succeeding outcomes of the pseudorandom number generator and/or between the binary sequence S and version of S that has been displaced by t positions [13].In other words the autocorrelation function C(t) measures the similarity of sequence ( The autocorrelation function C(t) = (A(t) − D(t))/n. Figure 3 illustrates the autocorrelation analysis of a video file called "Nasheed El Arkam" with 18 MB size, from which we can see that there are a high correlation in the sequence at some shift value, while Fig.…”

Section: Autocorrelation Analysismentioning

confidence: 99%

“…Structures in random number sequences can also be visualized graphically.CrypTool [13] implements an algorithm that is called phase space visualization which was first implemented by Dan Kaminsky of DoxPara in his program Phentropy (Part of the Paketto Keiretsu Toolkit). Figure 5 shows the space visualization of plain image from which we can recognize characteristic patterns which can indicate the inner structure of the input data.While Fig.…”

Section: Random Number Visualization Analysismentioning

confidence: 99%

Security Evaluation and Encryption Efficiency Analysis of RC4 Stream Cipher for Converged Network Applications

Riad¹,

Elminir²,

Shehata³

et al. 2013

Journal of Electrical Engineering

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The trend toward converged networks where voice,IP,video and wireless are combined over the same network infrastructure offers significant -and highly attractive -benefits.But this union introduces new vulnerabilities and new opportunities to break into the network and so we need converged security.In this paper we investigate the possibility of using RC4 as a stream key generator for converged network applications.The RC4 was statistically tested against wide range of tests for inspecting the validity of the encryption,and it's mathematically measured for encryption efficiency.All the consequent proves that RC4with suitable key length is highly secure and efficient enough to be used within the converged network.

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“…3 dargestellt, schon mit nur drei Einzel-Komponenten erstellt werden 2. Jeder Konnektor besitzt einen eigenen Da-tentyp (String, Byte Array, Integer, BigInteger, Datenstrom und viele weitere), der durch seine Farbe identifiziert werden kann.…”

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