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Cryptography

Laurence Dwight Smith
Cryptography by Laurence Dwight Smith PDF

Author : Laurence Dwight Smith
Publisher : Courier Corporation
Page : 180 pages
File Size : 23,98 MB
Release : 1955
Category : Business & Economics
ISBN : 9780486202471

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Elementary account of ciphers, history, types, etc., with 151 examples of ciphers and codes. Solutions. Good introduction for beginners.

A Methodology for the Cryptanalysis of Classical Ciphers with Search Metaheuristics

George Lasry
A Methodology for the Cryptanalysis of Classical Ciphers with Search Metaheuristics by George Lasry PDF

Author : George Lasry
Publisher : kassel university press GmbH
Page : 249 pages
File Size : 45,50 MB
Release : 2018
Category :
ISBN : 3737604584

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Cryptography, the art and science of creating secret codes, and cryptanalysis, the art and science of breaking secret codes, underwent a similar and parallel course during history. Both fields evolved from manual encryption methods and manual codebreaking techniques, to cipher machines and codebreaking machines in the first half of the 20th century, and finally to computerbased encryption and cryptanalysis from the second half of the 20th century. However, despite the advent of modern computing technology, some of the more challenging classical cipher systems and machines have not yet been successfully cryptanalyzed. For others, cryptanalytic methods exist, but only for special and advantageous cases, such as when large amounts of ciphertext are available. Starting from the 1990s, local search metaheuristics such as hill climbing, genetic algorithms, and simulated annealing have been employed, and in some cases, successfully, for the cryptanalysis of several classical ciphers. In most cases, however, results were mixed, and the application of such methods rather limited in their scope and performance. In this work, a robust framework and methodology for the cryptanalysis of classical ciphers using local search metaheuristics, mainly hill climbing and simulated annealing, is described. In an extensive set of case studies conducted as part of this research, this new methodology has been validated and demonstrated as highly effective for the cryptanalysis of several challenging cipher systems and machines, which could not be effectively cryptanalyzed before, and with drastic improvements compared to previously published methods. This work also led to the decipherment of original encrypted messages from WWI, and to the solution, for the first time, of several public cryptographic challenges.

A Life in the Cinema

Mick Garris
A Life in the Cinema by Mick Garris PDF

Author : Mick Garris
Publisher :
Page : 356 pages
File Size : 33,94 MB
Release : 2020-11-11
Category :
ISBN :

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ntroduction by Stephen King, Afterword by Tobe Hooper, Jacket and Interior Art by Clive BarkerA LIFE IN THE CINEMA is the first book from award-winning filmmaker Mick Garris. It is a collection of eight prickly tales and a screenplay that reach under the skin of real life and reel life to take you places you never realized you wanted to go. The title story, "A Life in the Cinema" and its sequel, "Starfucker", are set in the author's hometown of Hollywood, and provide a yellow-jaundiced look at a world you only thought was glamorous.As Stephen King, in his introduction, says: "Here is a real Hollywood insider writing about the real inside world of filmmaking: the good, the bad, and the cheesy. These stories are both erotic and cynical, but they are above all well and fiercely told-when he's yarning about the tarnished tinsel underbelly of the town he knows (and clearly loves) the best, Mick Garris writes like a combination of Robert Bloch and James Ellroy, hardboiled noir with a ghastly little prink of the devil's own pitchfork."Not all of the stories are Hollywood-based: Garris includes tales of a grandmother who is just as loving in death as she was in life, a geriatric trailer park with a randy secret, wistful and impossible love with a twist, the wrong kind of baby-love, and a deathly brush with fame. The book is capped with a screenplay by Garris, as well as "Chocolate", the story it's based on, providing, as King puts it, "a textbook seminar in the art and craft of adapting one's own work."So welcome to a dark side of Hollywood you've never seen before...