Випробування та сертифікація最新文献

{"title":"FOR PSEUDORANDOM SEQUENCES BASED ON ELLIPTIC CURVE ISOGENIES GENERATING METHOD","authors":"I. Lavryk, O. Pryima","doi":"10.37701/ts.03.2024.15","DOIUrl":"https://doi.org/10.37701/ts.03.2024.15","url":null,"abstract":"The pseudorandom sequences generation is a cryptographic systems fundamental aspect that affects cryptographic strength. One of these sequences advanced generating methods involves the use of elliptic curves (ECs), in particular by exploiting the isogeny properties of ECs. This approach not only improves the security features of cryptographic algorithms, but also ensures efficiency and reliability in the generation process. The use of isogenic transformations - morphisms between elliptic curves that preserve their group structure - further enriches the technique by introducing complex algebraic operations that are difficult to solve. \u0000Recent research has detailed the effectiveness of pseudorandom sequence generators based on elliptic curves. Methods have been developed that exploit the properties of elliptic curves over finite fields to generate sequences with low correlation and high linear complexity. There is also another approach that uses linear shift feedback registers (LFSRs) in combination with elliptic curve points to generate pseudorandom sequences. \u0000The new obtained method makes it possible to increase the number of internal states of the Dual_EC_DRBG generator by \u0000√n times, where n is the number of cyclic subgroups of simple order of the initial curve. This increases the complexity of disclosing the law of formation of the DRBG by an attacker. The application of the developed method also allows to avoid the existing disadvantages of Dual_EC_DRBG \u0000The article investigates the use of EC isogenies in the generation of pseudorandom sequences, considering their potential for improving cryptographic strength. By means of a detailed analysis of the algebraic structure and properties of these transformations, a method for PSPs generating is developed that can potentially provide advantages over existing methods in terms of security and efficiency in the transition period to post-quantum cryptography.","PeriodicalId":515274,"journal":{"name":"Випробування та сертифікація","volume":"110 19","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-07-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141666987","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"HIGH-FREQUENCY METHODS FOR COMPLEX AIRBORNE RADAR OBJECTS SCATTERING CHARACTERISTICS CALCULATING","authors":"I. Riapolov, Ye. Riapolov, S. Bodnar","doi":"10.37701/ts.03.2024.12","DOIUrl":"https://doi.org/10.37701/ts.03.2024.12","url":null,"abstract":"The current state of radar to perform detection and recognition tasks development requires knowledge of a priori information about the secondary radiation of radar objects characteristics. Obtaining this information concerning the target is possible by means of physical or mathematical modelling. Information concerning radar objects obtained by conducting field and physical experiments is associated with significant material, organizational and time costs. Therefore, the method of mathematical modelling can be considered as the most affordable way to obtain information on scattering characteristics. \u0000This paper evaluates modern high-frequency methods for the scattering characteristics (secondary radiation) calculating on complex airborne radar objects by mathematical modelling. The calculation of the objects scattering characteristics with surface breaks is carried out by preliminary dividing the surface into a smooth part and edge areas of the surface. The corresponding mathematical relations obtained can be used to estimate the secondary radiation of a complex airborne radar object. \u0000The article defines the possibilities of modern high-frequency methods for calculating the scattering characteristics of complex airborne radar objects using mathematical modelling, namely: \u0000 \u0000calculation of scattering characteristics by a smooth surface of a complex airborne radar object; \u0000calculation of the scattering characteristics by the edge local surface areas with a radio-absorbing coating of a complex airborne radar object. \u0000 \u0000The scattering characteristics of objects with surface breaks are calculated by first dividing the surface into a smooth part and edge areas. To calculate the scattered field, Kirchhoff-type integral representations are used. Thus, the integration surface covering the scattered in these integral representations is chosen to coincide with the object's surface everywhere except for some edge area. \u0000The corresponding mathematical relations for scattering characteristics calculating on smooth and edge localized surface areas of a complex airborne radar object are obtained. The presented calculation methods application can contribute to obtaining a priori information (as required by the current state of radar development) concerning the scattering characteristics of complex airborne radar objects, taking into account such complicating factors as the heterogeneity of the boundary surface, the presence of radio-absorbing coatings, and taking into account their complex effect.","PeriodicalId":515274,"journal":{"name":"Випробування та сертифікація","volume":" 1178","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-07-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141669030","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"THE COMBAT ENGAGEMENT (COMBAT EPISODE) LIFE CYCLE INTERACTIVE THREE-DIMENSIONAL VISUALIZATION CRITERIA AND INDICATORS SELECTION","authors":"V. Varakuta, V. Farafonov, Ye. Ryapolov, I. Barkatov, V. Tiurin, S. Honcharuk","doi":"10.37701/ts.03.2024.05","DOIUrl":"https://doi.org/10.37701/ts.03.2024.05","url":null,"abstract":"The russo-Ukrainian war is generally characterized as an artillery war, since the main burden in it is the massive use of artillery. However, this war is distinguished from others by the use of various tactics, some of that repeat the tactics of the past, only at a higher technical level, and the newest tactics that have appeared thanks to the advent of modern weapons and military equipment, the which principles are based on the latest technical achievements. \u0000The specified circumstances require a careful and more detailed consideration (research) of these tactical techniques on such issues as the reasons for their occurrence, the number of participants, the course of the battle (combat episode), its result, analysis and development, practical recommendations that can be combined into a single concept of the life cycle, eliminate identified shortcomings or provide recommendations for improving individual positions in this matter. For this purpose, it is advisable to reproduce and reconstruct the life cycle of the combat engagement or combat episode that occurred. \u0000One of the means of reproducing the life cycle of a combat engagement (combat episode) is interactive three-dimensional visualization. Therefore, in order to create an interactive three-dimensional visualization model (animation) of the life cycle of a combat engagement or a combat episode, that would correspond as close as possible to real events, it is desirable to determine the criteria and indicators that characterize these events. \u0000The interactive three-dimensional visualization of the life cycle of a combat engagement or combat episode criterion can be the completeness and reliability of information, and the indicators - dynamism, evaluation of the effectiveness of combat operations and characteristics of the space (locality) in which the combat engagement (combat episode) took place.","PeriodicalId":515274,"journal":{"name":"Випробування та сертифікація","volume":"118 48","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-07-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141666835","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"SIMULATION MODEL FOR UNMANNED AERIAL COMPLEXES AT LAUNCHING POSITIONS SURVIVABILITY ASSESSEMENT","authors":"S. Orlov, S. Zvyhlianych, Yu. Rieznikov, Ye. Porynos","doi":"10.37701/ts.03.2024.11","DOIUrl":"https://doi.org/10.37701/ts.03.2024.11","url":null,"abstract":"The relevance of issues related to the justification of the rational approaches to the combat operations planning using unmanned aircraft systems, which are now assigned the main role in attacking the enemy by fire, necessitates the development of methods for evaluating such actions. The issue of increasing the survivability of unmanned aircraft systems under combat conditions is of important applied importance. The subject of the study is the unmanned aircraft systems application under the conditions of enemy action planning process. The article uses operations research methods. The purpose of the work is to develop a simulation model in the form of an algorithm, that allows conducting process research based on quantitative estimates and substantiating decisions aimed at increasing the survivability of unmanned aircraft systems under conditions of enemy action. By varying the parameters of the simulation model, it becomes possible to develop the most rational solutions for the unmanned aircraft systems use, ensuring the maximum level of their survivability under the specific conditions of combat operations. A simulation model is proposed, with the help of which it is possible to quantitatively evaluate decisions regarding the tactics of using UAV and finding ways to increase the level of their survivability under the conditions of enemy fire. During the implementation of the proposed model, statistics of the results of the simulated fire impact are accumulated, that allows to calculate estimates of the probability of UAV, deployed at the launching positions, to get various degrees of damage. By varying the specified parameters, it becomes possible to develop the most rational solutions aimed at increasing the survivability of UAV under the specific conditions of combat activities performing. The proposed simulation model for the survivability of unmanned aircraft systems assessment may be used in the decision support system for the appropriate level commander.","PeriodicalId":515274,"journal":{"name":"Випробування та сертифікація","volume":"120 23","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-07-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141666927","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"THE RISK THRESHOLD LEVEL JUSTIFICATION METHOD OF THE CRISIS SITUATIONS IN ORDER TO PREVENT ARMED AGGRESSION","authors":"V. Bogdanovych, V. Muzhenko, A. Tsybizov","doi":"10.37701/ts.03.2024.04","DOIUrl":"https://doi.org/10.37701/ts.03.2024.04","url":null,"abstract":"The risk threshold level method of the crisis situations justification to prevent armed aggression against targeted state (with elements of artificial intelligence technology) has been developed, that ensures the integrated risks of crisis situations threshold levels determination. The method is based on the expert assessment and forecasting technologies and allows to track the dynamics of growth of destructive risks factors of negative trends in the development of the security environment and preventive response to the processes of ensuring the national security of the State in its defining areas by reducing the risks of the most dangerous negative trends that can provoke crisis situations in the targeted State. It is noted that since the target State has limited resources allocated to ensure national security, it makes no sense to fully consider all the identified negative trends (not all of them are aimed at the use of military force). Therefore, the method provides for the establishment of two threshold (critical) levels for each negative trend. The first level is the level of fixing the integral risk (if the negative trend has two or more destructive factors), upon reaching that the national security system organizes detailed monitoring of such a trend. The second level is the threshold level of of a crisis situation risk, at which crisis management is engaged in the system of ensuring national security. \u0000Practical implementation of the developed method will ensure a faster response to the risks of certain destructive factors for national security, which will make it possible to increase the efficiency of national security management under conditions of limited resources and expand preventive response to a wider range of negative trends in the geopolitical and military-political situation in the regions where targeted State's national interests are realized.","PeriodicalId":515274,"journal":{"name":"Випробування та сертифікація","volume":" 816","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-07-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141669472","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}