In our state there are a number of complex problems in the field of information security that require urgent and radical solution. That’s why theoretical, methodological and political research of the problem of information security in Ukraine, which is experiencing a crisis phase of its development, is becoming especially relevant today. In order to develop an effective system of national information security, a detailed study of the experience of the leading countries of the world, which carry out effective information protection of their states and citizens, is necessary. Today there are national information security systems that have really proven their effectiveness and structural and functional perfection. Indeed, the successful development of a democratic state and civil society is possible only if the information resources are properly used and the state policy is implemented, which would ensure a high level of national information security. In the modern world, the basic principles and tools for the formation of effective information protection of the national security space have been developed already. At the same time, Ukraine needs to apply adequately the foreign experience of the most successful countries in this regard, correctly transforming it taking into account national specificity and the unique role of Ukraine in modern geopolitics. As an important indicator of the protection of citizens, society and state, information security is an integral part of national security. Therefore, its determination mainly focuses on preventing harmful effects that may result in various information threats, as well as eliminating and overcoming those effects with the least possible harm to society and humans. In this aspect, the study of not only the philosophical and phenomenological and socio-psychological determinants of information security of citizens, but also political and legal resources and mechanisms of protection of the information space of the state in the conditions of the functioning of the global information society acquires a special significance. А content analysis of the notion «information security» as a form of national security aimed at ensuring human rights and freedoms in relation to free information access, creation and implementation of secure information technologies and protection of the property rights of all participants of information activities, includes consideration of possible diversions in this area, especially at the international level. Today there is a situation of incompleteness of formation and fragmentary filling of the information space content of the country and the legislative base in our society. The efficiency of the information weapon itself has increased too quickly due to the rapid information circulation and the spread of information networks. As a result, mass media forms the «mass» person of our time, in turn this fact displaces traditional direct contacts, by dissociating people and replacing them by computers and television. At the same time it gives rise to apathy, uncritical attitude and indifference, it complicates the adequate orientation, causing the social disorientation. Informative safety has the human measuring. Therefore an important role in opposition to destructive external and internal informative influences is played by education of citizens. Her proper level called to provide the state and civil society. An in fact uneducated population easily is under destructive influence of informative threats of the modern global world. Unfortunately, Ukraine, does not have sufficient resources and technologies for adequate opposition to the external threats. Taking into account it strategy of forming of the national system of informative safety of our state can be only the maximal leveling of destructive influences from the side of external informative threats. To the end it is necessary to carry out democratic reforms Ukraine, generate civil society, to provide functioning of the legal state and increase of political and civil culture of population. At the same time it is necessary to bear reformers in a mind, that global nature of informative society predetermines rapid transformation of external threats in internal, converting them into permanent calls which are opened out within the limits of national in a civilized manner-informative and socio-political space. Besides modern global informative systems, mass medias, network facilities do a limit between external and internal threats almost unnoticeable.
ANALYSIS AND SOFTWARE IMPLEMENTATION OF MODULAR MULTIPLICATION-BASED BLOCK CIPHER
