Персона: Белозубова, Анна Игоревна
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How to limit capacity of timing covert channel by adding extra delays
© 2020 Elsevier B.V.. All rights reserved.Covert channel is a communication channel that was not designed for information transmission. It is proven that in some circumstances the attacker has an ability to build a covert channel that cannot be detected. That is why the method of capacity limitation of a potential covert channel seems to be an effective counteraction that can be used when allowable level of covert channel capacity is set up. To use such method, it is needed to estimate residual covert channel capacity. Random delays before packet sending are considered as a tool of noise insertion into a covert channel. In this paper authors investigated the way to estimate covert channel capacity taking into account network load conditions. The main topics of the research are cases when time intervals between packet sending and packet receiving in network comply with normal and exponential distributions.
On/Off Covert Channel Capacity Limitation by Adding Extra Delays
© 2021 IEEE.Covert channel is a communication channel that was not designed for information transmission. Covert channels in IP networks can be implemented in a way that is difficult to detect. That is why the method of capacity limitation of a potential covert channel seems to be an effective counteraction that can be used when allowable level of covert channel capacity is set up. To effectively protect information from leakage, it is needed to estimate residual covert channel capacity when limitation method was implemented. Random delays before packet sending are considered as a tool of noise insertion into a covert channel. In this paper authors investigated the way to estimate covert channel capacity taking into account network load conditions and ways of random delay generation. The main topics of the research are cases when time intervals between packet sending and packet receiving in network comply with normal and exponential distributions.
Метод противодействия утечке информации по сетевым скрытым каналам по времени на основе введения задержек перед отправкой пакетов
Historical notes on Russian cryptography
The article is devoted to the main milestones in the development of encryption techniques and mathematical methods of cryptography in Russia from the period of ancient Russia up to the nowadays. We break down the history of Russian cryptography into several periods and highlight the periods of cryptography development, analyze the most notable achievements and summarize the main results and applications of each period. The review of scientific research and standardization of cryptography in modern Russia is given. The progress of related areas is briefly analyzed: steganography and protection against falsification of documents.