Periodic characteristics of output feedback encryption mode

  • Alexandr Kuznetsov V. N. Karazin Kharkiv National University https://orcid.org/0000-0003-2331-6326
  • Ievgeniia Kolovanova V. N. Karazin Kharkiv National University, Department of information systems and technologies security
  • Tetiana Kuznetsova V. N. Karazin Kharkiv National University https://orcid.org/0000-0001-6154-7139
Keywords: encryption mode, random substitution, periodic characteristics of output blocks, output feedback

Abstract

We investigate periodic characteristics of sequence of output blocks in the output feedback encryption mode. The model of random homogeneous substitution is used for an abstract description of this formation. This property is directly related to the periodic properties of output feedback encryption mode, since it characterizes the probabilistic distribution of output blocks with certain period appearance, provided that the assumption is made that the properties of the block symmetric cipher are consistent with certain properties of the random substitution. Also in the work specific practical tasks are solved, namely recommendations are being developed for the application of the outbound feedback on the encryption threshold, certain requirements and limitations are justified.

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Author Biographies

Alexandr Kuznetsov, V. N. Karazin Kharkiv National University

Doctor of Sciences (Engineering), Full Professor, Academician of the Academy of Applied Radioelectronics Sciences

Ievgeniia Kolovanova, V. N. Karazin Kharkiv National University, Department of information systems and technologies security

Ph.D., lecturer of the department

Tetiana Kuznetsova, V. N. Karazin Kharkiv National University

Researcher of the department, Department of Computer Science

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Published
2017-12-21
Cited
How to Cite
Kuznetsov, A., Kolovanova, I., & Kuznetsova, T. (2017). Periodic characteristics of output feedback encryption mode. Computer Science and Cybersecurity, (3), 4-21. Retrieved from https://periodicals.karazin.ua/cscs/article/view/10001
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