In this article a representation of the elements of the Jacobian of a Picard curve is considered, which allows us to construct an algorithm for the reduction of divisors with complexity O(deg(D)). Addition of divisors can be performed using the reduction algorithm.
In article is stated the method of acceleration of procedures of addition and doubling points Jacobian of a hyperelliptic curve in affine and projective coordinates. Corresponding modified Miller algorithms are developed. In affine coordinates an expense for group operation of doubling there are more than expenses for group operation of addition, therefore it is more favorable to realize consistently two additions, than doubling and addition. Estimations of efficiency of the modified algorithms are received.
At the present time, competition for customers among banks is escalating. The indicator of customer churn is very important for the analysis and planning bank work. Five algorithms for calculating the outflow of bank customers are used in this article. Program codes are written in Python.
The paper considers the urgent tasks of ensuring the reliability of information processing in the environment of portals of regional executive bodies, proposes a structural-functional approach that extends the methodology of ensuring their reliability.
Based on the specific features of technical means of information protection as a special class of complex systems, it is proposed the problem of synthesis of structure of means of protection to decide as a multicriterion optimization problem taking into account the influence of structure and performance on selected quality indicators.
The article proposes ways to eliminate ambiguity in the conduct of retraining of information security specialists in training centers of enterprises and organizations, through the development and application of automated information systems in the form of training programs and software simulators.
The article analyzes the system of training students of Maritime University in the field of information security. Determination of the content of competence of graduates of the Maritime University in the field of protection of information flows on the ship-to preserve and ensure the integrity and confidentiality of information. Formulation of tasks, the solution of which is aimed at achieving the goal.
The authors highlight the latest trends in the legal regulation of cryptocurrencies in the Russian Federation, identify difficulties associated with the investigation of the theft of crypto assets. On the example of practical situations, the authors propose a set of possible actions that need to be carried out by the bodies conducting the preliminary investigation or by the body conducting operational-search activities in the investigation of the theft of cryptocurrency. Mainly, the article focuses on the evidence aspect related to the collection, analysis and fixing of evidence obtained at the pre-trial stages of criminal proceedings. The main result of scientific research is the development of a methodology for investigating crimes in which crypto assets are the subject of a criminal attack.
The paper analyzes the basic gaming technologies that are possible for useful use in the process of education information security specialists. The game processes and tools that allow students to acquire the necessary professional skills are considered. A comprehensive course on the application of gaming technologies is proposed that simulates the activities of specialists of building information systems, protection and security monitoring.
The paper analyzes the main problems of the organization of personal data security in various organizations, considers the approaches to building systems of their protection and offers specific recommendations to ensure the engineering and technical security of personal data processing facilities.
The problems that arose during the formulation of tasks and during the audit of information security of automated process control systems at the enterprise were studied. Features of the audit of automated process control systems during their joint work with other systems are indicated. Safety criteria relevant to the process control system are considered. The types of audit of multi-level information systems with integrated process control systems are presented and characterized, their suitability for various classes of checks is analyzed.
The presence of a large number of vulnerabilities in modern operating systems and software that pose a threat to information security determines the need to study them when training specialists in the field of information security. The article discusses the principles of building a software and hardware complex based on the joint use of cloud and virtualization technologies; describes the assembly method of the OpenStarck operating system; examples are given that confirm the operability of the chosen approach.
The paper analyzes the main shortcomings and problems of implementing a situational center for monitoring information security (Security Operation Center).
Well posed (by Hadamard) problem has properties of existence, uniqueness and stability of its solution. Ill posed problems do not have at least one of the above properties, often this is the stability property of the solution with respect to initial conditions. The solution of such problems is sensitive even to a small change in the values of the input data, and so we do not guarantee an acceptable approximation to the answer at the level of the existing error in the measurement of initial values. The paper discusses the use of the instability effect for the synthesis of cryptographic transformations using natural noise in radio channels.
Paper is devoted to the development of model project of scalable infocommunication infrastructure for shopping centers using the example of the «Z-FORT» shopping center. The analysis of the selected object, the calculation of the required throughput, the preparation of technical requirements. A search was also made for the necessary technical solutions and a review of the necessary network technologies. The cited material allowed us to develop a model project for scalable infocommunication infrastructure for shopping centers.
The problem of estimating the angles of the target location in the radar meter wave range, associated with the interference of direct and reflected from the earth's surface waves. In the area of small site angles, the directional patterns for the forward and reflected waves merge together and significantly distort the estimates of the target site angles. The possibility of solving the problem of estimating the angles of the target site by three methods is analyzed: the method of angular spectral analysis, the method based on the likelihood equations, the method of maximum likelihood with high resolution, developed at the IKBFU. On the basis of the likelihood functional, expressions are derived that define the radiation patterns of the antenna system and the surface of the likelihood functional. Results of model researches of potential possibilities of estimates of angles of a place by three methods are presented. It is shown that the maximum likelihood method with a high resolution interference has no systematic errors in estimates of elevation angles, as the low correlation and the large correlation of direct and reflected waves. This method solves the problem of estimating the angles of the place in the range of 0,5 ÷ 85° with a signal-to-noise ratio of ≈ 30 dB.