Cryptography, Information Theory, and Error-Correction: A by Aiden Bruen, Mario A. Forcinito

By Aiden Bruen, Mario A. Forcinito

Publish yr note: First released December thirty first 2004 by way of Wiley-Interscience

Discover the 1st unified therapy of today's so much crucial info technologies-- Compressing, Encrypting, and Encoding

With identification robbery, cybercrime, and electronic dossier sharing proliferating in today's stressed out international, delivering secure and exact details transfers has develop into a paramount challenge. the problems and difficulties raised during this pastime are encompassed inside of 3 disciplines: cryptography, info thought, and error-correction. As know-how keeps to improve, those fields have converged at a realistic point, expanding the necessity for a unified therapy of those 3 cornerstones of the knowledge age.

Stressing the interconnections of the disciplines, Cryptography, details idea, and Error-Correction deals a whole, but obtainable account of the applied sciences shaping the twenty first century. This ebook includes the main updated, unique, and balanced therapy to be had on those matters. The authors draw on their adventure either within the school room and in undefined, giving the book's fabric and presentation a distinct real-world orientation.

With its reader-friendly type and interdisciplinary emphasis, Cryptography, info thought, and Error-Correction serves as either an admirable instructing textual content and a device for self-learning. The bankruptcy constitution makes it possible for an individual with a highschool arithmetic schooling to realize a robust conceptual figuring out, and offers higher-level scholars with extra mathematically complex issues. The authors essentially map out paths in the course of the e-book for readers of all degrees to maximise their learning.

This book:
• is appropriate for classes in cryptography, info thought, or error-correction in addition to classes discussing all 3 areas
• presents over three hundred instance issues of solutions
• offers new and intriguing algorithms followed by means of industry
• Discusses strength purposes in mobilephone biology
• info a brand new characterization of excellent secrecy
• positive factors in-depth insurance of linear suggestions shift registers (LFSR), a staple of contemporary computing
• Follows a layered method of facilitate dialogue, with summaries through extra certain explanations
• presents a brand new viewpoint at the RSA algorithm

Cryptography, info thought, and Error-Correction is a wonderful in-depth textual content for either graduate and undergraduate scholars of arithmetic, desktop technology, and engineering. it's also an authoritative evaluation for IT execs, statisticians, mathematicians, computing device scientists, electric engineers, marketers, and the widely curious.

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Extra resources for Cryptography, Information Theory, and Error-Correction: A Handbook for the 21st Century

Example text

This subject is pursued more fully in Chapter 7. New, Noteworthy We discuss the Vigenère cipher and show how it can be broken by finding the length of the key-word and then the key-word itself. We explain clearly the simple principles involved without getting bogged down in lengthy formulae. We also give a detailed but accessible description of the famous Enigma system used in World War II both from the mechanical and the mathematical point of view. 1 Introduction Since the early stages of human civilization, there has been a need to protect sensitive information from falling into the wrong hands.

If 'e' enciphers to 'Η', we have a key letter of 'D'. Finally, if 'e' enciphers to 'S', we have a key letter of 'Ο'. Now we must examine each choice case by case. A key letter of 'B' means that the most frequently occurring letters besides 'e' are 'g' and 'r'. ) besides 'e' are 'c' and 'p'. Finally, a key letter of Ό ' means that the most frequently occurring letters besides 'e' are 't' and V. 1, it seems that Ό ' is then the more likely key-letter. Therefore, we conclude that the second key letter is Ό ' .

The second method treats the English language like a stationary or even ergodic source (see Chapter 11). We will use 2 fundamental principles in carrying out our tasks. • Έ ' is the most frequent letter of the english language. • Informally, written English tends to "repeat itself". This means that the frequencies of a passage starting in position 1 are similar to the frequencies of the passage starting in position к when we slide the text along itself. Once we obtain n, the key-length, we can find the keyword itself.

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