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Most industrial automatic systems are remotely controlled, so the problem of protecting control information transmitted through an open channel is relevant. The use of cryptographic systems for security involves the ability to fast exchange system keys. In this paper, a new family of the true random key generators is proposed. The source of entropy for such random devices is the phenomenon of jittering in electronic circuits. Generators are built in the form of cascade schemes based on adders. We give the architectural solution for the synthesis of the generator that based on transition dynamics of such an appliance. The procedure for the hidden transfer of keys using those generators is discussed.

In this paper, we present a novel archival system called ARCHAIN, developed for the State Archive-keeping Committee of the Republic of Tatarstan (Russia). Blockchain is the principal part of the system, which stores transactions (facts of transfer of documents to the archive) in a protected form. The developed system uses a permissioned blockchain model due to the customer's requirement for the presence of a trusted center. Index Terms-blockchain, archival science, cryptography

In this paper, we propose a new method for estimating the slant of word in handwritten text. The method allows a researcher to analyze snippets of a picture containing a few words in different lines. The main goal of the research is to present a tool to observe small changes of slant in the text during work. Student check sheets were used as a database for the research. Some changes in slant depending on speed of writing are discovered.

Programmable logic devices on base of asynchronous combinational circuits with feedback are considered. The main aim of the research is to obtain a method for designing a circuit with a set of prescribed stable states or a circuit without stable states — a generator of true random numbers. Both the cases of binary and ternary logics are studied.

Nowadays the progress in information technologies filed is opening great new possibilities for people in all areas of living. As education is fundamental step in every person's life we have to increase its’ popularity, availability and convenience for everybody. Information technologies present a lot of new tools and approaches which expand the infrastructure of the educational process. Our idea integrates the simplicity and reliability of client-server architecture and usability of various forms of user interfaces. The design describes an e-learning system, which has an m-learning interface, and several new modules which increase the efficiency of the studies. For these purposes we propose module for preliminary homework checking, statistical module and feedback module that can be extended to the separate rating system. The variety of interfaces is supported by three components: desktop application, mobile application and web-based application. Although we concentrate on desktop and mobile forms as according to the statistical data they are more usable. The difference of European, American and Russian systems of education predetermine some aspects in the design approach. It allows to use the strongest advantages of every model in the solution and to share the multinational experience. The paper describes in details the highlighted moments.

The paper studies the problem of language identification for audio files. For solving the problem, we use methods of digital signal processing only (without analysis of phonemes distinctive for language). A special attention is drawn to the form of signal in an area close to the position of a stop consonant. The evaluation is performed on a set of two languages; this includes speech records taken from TV programs. It is provided that solely one of the two languages (either Tatar or Russian) is used in each of files. Experimental evidence demonstrates the feasibility of the proposed techniques.

Education is a key element in the life of every person. In the recent years we have seen strong growth and development of information technologies, and as a consequence - informatization process in all areas of society. Particular attention is now being paid to mobile technologies, based on the analysis of the market it has been revealed that tablets and smartphones are one of the most promising areas of development in the near future. The paper presents an approach to design of the e-learning systems in terms of diversity of implementation on the side of the client/end user (mobile application, web application and a classic application for PC). To improve the performance of teachers and students the implementation of special units is suggested, such as the module of the analytical statistics for teachers, the module of additional advanced checking of home work and feedback module.

The latest achievements in the information sciences area are mostly connected with the mobile technologies. The significant growth in this area attracts more and more users worldwide. In this paper we concentrate on the mobile learning aspect in education process, specifically in learning management systems. We propose a new design approach which consolidates different front-end representations of the learning system with the single back-end instance. To increase the efficiency of the system we consider new module like preliminary homework checking module, which will be useful especially in software engineering field, and additional statistical and feedback modules.