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Informatiekunde







Basic Methods of Cryptography

Basic Methods of Cryptography




J.C.A. van der Lubbe

This text covers the fundamentals of cryptography, which is concerned with methods of security in the storage and transportation of information. Computers are now found in every layer of society, and information is being communicated and processed automatically on a large scale. Examples include medical and financial files, automatic banking, video-phones, pay-tv, facsimiles, tele-shopping and global computer networks. In all these cases there is a growing need for the protection of information to safeguard economic interests, to prevent fraud and to ensure privacy. In this book, the fundamentals of secure storage and transportation of information are described. Among other things, attention is given to symmetric (DES) and asymmetric (RSA) cryptographic algorithms, which are suitable for data security, to methods for authentication, data integrity and digital signatures, key management and to network aspects. The book will be of value to advanced students and researchers involved in data protection and information processing, including electrical engineers, mathematicians, business managers, system designers, application programmers, information analysts and security officers http://www.vssd.nl/hlf/e012.htm








Euro 22.50


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Information Theory

Information Theory




J.C.A. van der Lubbe

On all levels of society systems have been introduced that deal with the transmission, storage and processing of information. We live in what is usually called the information society. Information has become a key word in our society. It is not surprising therefore that from all sorts of quarters interest has been shown in what information really is and consequently in acquiring a better knowledge as to how information can be dealt with as efficiently as possible. Information theory is characterized by a quantitative approach to the notion of information. By means of the introduction of measures for information answers will be sought to such questions as: How to transmit and store information as compactly as possible? What is the maximum quantity of information that can be transmitted through a channel? How can security best be arranged? Etcetera. Crucial questions that enable us to enhance the performance and to grasp the limits of our information systems. This book has the purpose of introducing a number of basic notions of information theory and clarifying them by showing their significance in present applications. Matters that will be described are, among others: Shannons information measure, discrete and continuous information sources and information channels with or without memory, source and channel decoding, rate distortion theory, error-correcting codes and the information theoretical approach to cryptology. Special attention has been paid to multiterminal or - network information theory; an area with still lots of unanswered questions, but which is of great significance because most of our information is transmitted by networks. All chapters are concluded with questions and worked solutions. That makes the book suitable for self study. URL: http://www.vssd.nl/hlf/e028.htm








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Open data and the knowledge society




Bridgette Wessels

The idea of a knowledge society has been raised over the last two decades but the transition to such a society has not been realized up to the present time, and discussion about a knowledge society has largely focused on a knowledge economy and information society rather than a mobilization to a knowledge society. These debates have, however, taken place before the rise of open data and big data and the development of an open data movement. The book considers the role of the open data movement in fostering transformation to a knowledge society. The characteristics of the open data movement include the strong conviction of the value of open data for society, attention to the institutional aspects of making data open in an inclusive way, and a practical focus on the technological infrastructure that are key in mobilizing a knowledge society. At the heart of any mobilization is an emerging open data ecosystem and new ways of producing and using data - whether 'born digital' data, digitized data, or big data - and how that data, when made openly available, can be used in a knowledgeable way by societal actors.






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Euro 29.99


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