chapter-12 - CS549: Cryptography and Network Security by...

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Cryptography and Network Security 1 CS549: Cryptography and Network Security © by Xiang-Yang Li Department of Computer Science, IIT
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Cryptography and Network Security 2 Notice© This lecture note (Cryptography and Network Security) is prepared by Xiang-Yang Li. This lecture note has benefited from numerous textbooks and online materials. Especially the “Cryptography and Network Security” 2 nd edition by William Stallings and the “Cryptography: Theory and Practice” by Douglas Stinson. You may not modify, publish, or sell, reproduce, create derivative works from, distribute, perform, display, or in any way exploit any of the content, in whole or in part, except as otherwise expressly permitted by the author. The author has used his best efforts in preparing this lecture note. The author makes no warranty of any kind, expressed or implied, with regard to the programs, protocols contained in this lecture note. The author shall not be liable in any event for incidental or consequential damages in connection with, or arising out of, the furnishing, performance, or use of these.
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Cryptography and Network Security 3 Malicious Software XiangYang Li
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Cryptography and Network Security 4 Malicious Software What is the concept of defense: The parrying of a blow. What is its characteristic feature: Awaiting the blow. On War, Carl Von Clausewitz
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Cryptography and Network Security 5 Viruses and Other Malicious Content computer viruses have got a lot of publicity one of a family of malicious software effects usually obvious have figured in news reports, fiction, movies (often exaggerated) getting more attention than deserve are a concern though
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Cryptography and Network Security 6 Malicious Software
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Cryptography and Network Security 7 Trapdoors secret entry point into a program allows those who know access bypassing usual security procedures have been commonly used by developers a threat when left in production programs allowing exploited by attackers very hard to block in O/S requires good s/w development & update
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chapter-12 - CS549: Cryptography and Network Security by...

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