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IEEE International Conference on Intelligent Data Acquisition and Advanced Computing Systems: Technology and Applications (IDAACS)

Methods of data protection for quantum secure communication system

Stanislaw Andrzej Rajba, Łukasz Więcław, Сергій Ніколаєнко, Yevhen Vasiliu

Published Sep 1, 2017• 4 citations
Publisher

Abstract

In this paper the methods of data protection for developed by authors earlier multichannel system of quantum secure communication are proposed. These methods allow closing the intercepted data from the unauthorized user. The simulation model of quantum secure communication system on optical fiber is developed. This model depends on three parameters: probabilities of an error in the fiber optic channel, time of detection of unauthorized connection to the fiber optic line and transmission rate. Results of modeling for two methods of data protection are presented.

DOI
10.1109/idaacs.2017.8095064

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In this paper the methods of data protection for developed by authors earlier multichannel system of quantum secure communication are proposed. These methods allow closing the intercepted data from the unauthorized user. The simulation model of quantum secure communication system on optical fiber is developed. This model depends on three parameters: probabilities of an error in the fiber optic channel, time of detection of unauthorized connection to the fiber optic line and transmission rate. Results of modeling for two methods of data protection are presented.
The method and the scheme of multichannel quantum system of secure communication for transfer of confidential data on optical fiber are developed. The considered scheme combines quantum key distribution with quantum secure data transmission. Such approach does not give possibility to the eavesdropper to decipher that part of information, which he can receive before the detection. The suggested scheme provides higher security level of transferred confidential information, than known, which use traditional pro-tocols of symmetric enciphering in a combination to quantum key distribution. It is found out that for the transmission protected in such a way on optical fiber the choice of wavelengths of 850 and 1625 nanometers is optimum. It is found out that when using in such systems of the avalanche photo diode FD-115L it is possible to provide a speed of information transfer up to 0,8 Mbps in one channel. For increase in speed of transfer, it is proposed to use two and more channels of transfer.
The system for transmission and reception of confidential information over fiber-optic communication line on the basis of created single-quantum registration system of optical radiation has 43 been suggested. With regard to such a communication system two types of optical wavelengths have been experimentally justified. One type of optical wavelength is used for information transfer and the second one for time synchronization of information transmission and reception, as well as for detection of unauthorized access to information, created with optical fiber macrobends. Optimal values of optical power, which allowed to provide the highest confidential information data rate and detect more effectively possible data loss channels have been established.
The paper discusses the importance of information resources requiring reliable methods of unauthorized access protection in the modern information-oriented society. The article describes the structure and basic principles of the quantum cryptography technology based on properties of quantum systems. Quantum information is a physical quantity characterizing changes occurring in the system during interaction between the information flow and the external environment. It offers a method for improving data security and confidential information protection using quantum teleportation within infrared laser communication channels. The theoretical development was implemented experimentally by the authors using the unit for laser communications.
The effects of different kinds of communication channels on the key indexes such as bit error rate and communication rate of quantum communication system, represented by quantum secure communication system, are systematically studied. For the actual channel, the transformation of quantum states caused by physical effects such as loss, dispersion and polarization mode dispersion in optical fiber channel is analyzed. With building in the spatial channel noise experimental data under different weather conditions, the mathematical model is established, and the software is designed and implemented.
When transferring data over optical fiber communication channels, it is required to provide data security and the authenticity of their source. To limit the access to the data for a third party, there can be applied quantum-cryptographical systems which are supposed to transfer every data bit by means of low power optical signals containing radiation photons the number of which could be in the range from 10 to 1, however, are far from being perfect and suffer from shortcomings, the main of which being a large number of errors due to the depolarization effect of optical radiation. The aim of this work was, therefore, to create device for sending and receiving confidential data which could provide complete security of transferred data, inherent to quantum-cryptographical communication systems at the same time could have a low number of such errors. A device for quantum-cryptographic communication system with a photon counter applied as a receiving module has been proposed. The possibility to use silicon avalanche photodetectors operating in the photon counting mode for confidential information transmission systems and defining authenticity of the source of transmitted information has been shown. I develop modern optical fiber communication system incorporating avalanche photodetector photon counter as a receiving module, that allow to detect unauthorized access to information and violation of its integrity and speed up the exchange of information in comparison with well-known quantum-cryptographical communication systems.
The existing methods of information delivery to the strategic and tactical management of many government agencies are expensive, not always reliable and efficient. Therefore, quantum cryptographic systems (QCS) have been actively developed in recent years. However, there are problems with the use of the QCS associated with the reliability of information transfer. First, the existing fiber-optic communication channels (FOCC) are not designed to transmit single-photon signals, which leads to the complexity of their cryptographic protection. The second is insufficiently methodically developed calculation of energy losses and errors in the evaluation of the characteristics of information transfer in FOCC QCS. In article the analysis of the energy loss factors in the classical fiber-optic channel is carried out and the additive loss formula is discussed in detail. Then we consider the fiber-optic channel of quantum information transmission with the use of integrated optical devices. The additive formula of optical losses in such a channel is discussed. The features of losses in integrated optical devices are shown. The features of quantum cryptographic system of information transmission are considered. As a result, the model of FOCC QCS taking into account energy losses is presented, which allows competently in theoretical terms and visualize the passage of information through modern quantum cryptographically secure telecommunications while providing control in government structures.