Open AccessTools for text analysis based on the cryptanalysis of one-to-one substitution
Author(s) -
Darya Makarskaya,
Yurii Kotov
Publication year - 2020
Publication title -
sbornik naučnyh trudov ngtu
Language(s) - English
Resource type - Journals
ISSN - 2307-6879
DOI - 10.17212/2307-6879-2020-1-2-99-112
Subject(s) - cryptanalysis , computer science , substitution (logic) , plaintext , differential cryptanalysis , impossible differential cryptanalysis , cryptography , statistic , theoretical computer science , information retrieval , algorithm , encryption , mathematics , programming language , statistics , operating system
The article considers text analysis tools based on a numerical estimate obtained using the cryptographic approach. It contains applying frequency cryptanalysis methods of one-to-one substitution to plaintext. In this case, these methods tend to methods for identifying letters of the text, and the task of cryptanalysis is to the task of identifying letters of text. For frequency cryptanalysis methods of one-to-one substitution, the identification error is determined as a statistic of a number of cryptanalysis errors for certain volumes of texts. The numerical score called the quality factor of a method can be transferred from methods to texts. Text analysis based on the quality factor of texts includes the selection of a cryptographic method with the help of which a quantitative assessment of the text is given, and the subsequent calculation of the quality factor of the text vector. In order to analyze texts based on cryptanalysis of a simple substitution the main stages of this analysis and necessary means are determined. These tools are implemented in the graphical user interface of MS Access and include 30 navigation tabs, on which 143 information and control elements are located. The article includes examples of implementation of some tools.