Cryptography

Download Codes: The Guide to Secrecy From Ancient to Modern Times by Richard A. Mollin PDF

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By Richard A. Mollin

From the Rosetta Stone to public-key cryptography, the artwork and technological know-how of cryptology has been used to release the vibrant historical past of historical cultures, to show the tide of conflict, and to thwart power hackers from attacking desktops. Codes: The consultant to Secrecy from historical to trendy instances explores the intensity and breadth of the sphere, ultimate obtainable to the uninitiated whereas maintaining adequate rigor for the pro cryptologist.

The e-book starts by means of tracing the advance of cryptology from that of an arcane perform used, for instance, to hide alchemic recipes, to the trendy medical procedure that's studied and hired this day. the rest of the booklet explores the fashionable features and purposes of cryptography, overlaying symmetric- and public-key cryptography, cryptographic protocols, key administration, message authentication, e mail and web safeguard, and complicated functions corresponding to instant safeguard, shrewdpermanent playing cards, biometrics, and quantum cryptography. the writer additionally comprises non-cryptographic safety matters and a bankruptcy dedicated to details conception and coding. approximately two hundred diagrams, examples, figures, and tables besides considerable references and workouts supplement the discussion.

Written by means of best authority and best-selling writer at the topic Richard A. Mollin, Codes: The advisor to Secrecy from historic to fashionable occasions is the basic reference for a person attracted to this fascinating and interesting box, from beginner to veteran practitioner.

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Extra resources for Codes: The Guide to Secrecy From Ancient to Modern Times (Discrete Mathematics and Its Applications)

Example text

He came, as a suppliant, to Proteus, King of Argos, whose wife Anteia fell in love with the handsome hero at first sight. However, he rejected her, and in the role of a “woman scorned”, she told the King that Bellerophon had tried to seduce her. ” Iobates, for reasons similar to his son-in-law’s, was unwilling to directly ill-treat a royal guest. Instead he asked Bellerophon to do him the favour of slaying the Chimera, a rather nasty, fire-breathing, she-monster with the head of a lion, body of a goat, and tail of a snake.

In fact, the word atbash itself is an example of what it denotes. The reason is that it is composed of aleph, taw, beth, and shin, the first, last, second, and penultimate letters of the Hebrew alphabet. Atbash is used in the Bible, in order to add mystery rather than hide meaning. The importance of its use therein is that it inspired the European monks and scribes of the Middle Ages to rediscover and invent new substitution ciphers. Through this development, cryptography was reintroduced into Western culture, and the modern use of ciphers may be said to have grown from this phenomenon.

From the Riddles of Ancient Egypt Peres with the verb to divide. Moreover, there is an additional play on the last term with the word for Persians. ” (Daniel 5:29 ) It is unknown why the king’s wise men, for the above-described biblical cryptogram, could not interpret what is essentially a plaintext, so the only answer can be their fear of revealing the bad news to the king. Of course, interest in biblical cryptography has been a topic of interest for many to this day. However, it can be argued that there is only the use of protocryptography since the essential element of secrecy is missing.

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