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Stream Ciphers in Modern Real-time IT Systems
This book provides the most complete description, analysis, and comparative studies of modern standardized and most common stream symmetric encryption algorithms, as well as stream modes of symmetric block ciphers. Stream ciphers provide an encryption in almost real-time regardless of the volume and stream bit depth of converted data, which makes them the most popular in modern real-time IT systems. In particular, we analyze the criteria and performance indicators of algorithms, as well as the principles and methods of designing stream ciphers. Nonlinear-feedback shift registers, which are one of the main elements of stream ciphers, have been studied in detail. The book is especially useful for scientists, developers, and experts in the field of cryptology and electronic trust services, as well as for the training of graduate students, masters, and bachelors in the field of information security.
The Song of the Forest
Lesia Ukrainka was a Ukrainian poet, prose writer, and dramatist of universal importance. Her first collection of poetry, On the Wings of Song (1893), established her reputation as an accomplished lyrical poet. This collection contains her often-quoted poem "Contra spem spero" (Hope against Hope)—an expression of her remarkable strength of character and determination to face down a severe illness (tuberculosis of the bones) that afflicted her from an early age and caused her untimely death at the age of 42. Lesia Ukrainka wrote her masterpieces in the genres of drama and dramatic poetry, to which she turned her attention in the early 1900s. Many of her dramas were set in a variety of histo...
Encyclopedia of Ukraine
Over thirty years in the making, the most comprehensive work in English on Ukraine is now complete: its history, people, geography, economy, and cultural heritage, both in Ukraine and in the diaspora.
The Art of the Scythians
This volume offers a detailed consideration of the style, technology, and iconographic implications of the art of the Scythians, organized by object typology and chronology, and considered against a broader historical, expressive, and technical background; that of the Scythians' Eurasian sources, of earlier and contemporary West Asian cultures, and of the Hellenic culture which emerged beside that of the Scythians in the northern littoral of the Black Sea.
Elements of Dynamic Oceanography
The ocean evokes the most romantic images of nature. It is the eternally hostile element that has taken a heavy toll for every act of discovery, sometimes in human lives. No wonder there has always been a romantic aura about those who take to the sea, be they pirates, fishermen, sailors, the ocean itself, have or even oceanographers. Their exploits, and provided ample food for thought and poetic inspiration. Clearly, man kind owes much to the ocean for the progress of civilization. There is more to wresting the ocean's secrets from its depths than simply the excitement of struggling with the elements. It is the thrill of ideas, of discoveries made by scientific analysis of oceanic phenomena....
