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NETWORK SECURITY - RSA ALGORITHM
 
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RSA Algorithm is the example for Public Key Encryption algorithm. Here we are supposed to find two keys 1) Public Key which is used at encryption 2) Private Key which is used at decryption step 1: Select two large Primes P , Q Step 2: Calculate n=P*Q & O(n) = (P-1)*(Q-1) Step 3: Assume e and d (Public and Private Key). Step 4: Encrypt the Plain Text using Public Key e. Step 5: Decrypt the Cipher Text using Private Key d.
Kerberos Overview
 
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Overview of Kerberos Authentication Reference: Cryptography & Network Security - W. Stallings (Pearson, 2011)
Views: 15880 Zhi Xuan Tan
NETWORK SECURITY - TYPES OF AUTHENTICATION (Message Encryption, MAC, Hash Functions)
 
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Three types of Authentications 1. Message Encryption 2. Message Authentication Code 3. Hash Functions.
Information Security Course | Lecture 4  | Cryptography | William Stalling
 
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Hill Cipher, Vignere Cipher and DES cipher explained.
Views: 3422 Daikh Kuch Naya !
What Is Cipher In Network Security?
 
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Lecture 2 some basic vocabulary of computer and network reverse circle cipher for personal security (pdf encryption algorithms sorcery. The type and january 17, 2012cryptography network security. The term cipher is sometimes used as a synonym for ciphertext, but it more properly means the method of encryption rather than result in cryptography, (or cypher) an algorithm performing or decryption some systems both codes and ciphers one system, using superencipherment to increase security. Plaintext is what you have before encryption, and ciphertext the encrypted result. Encryption schemes are based on block or stream ciphers. Origin of the only security service these systems provide is confidentiality information in cryptography, cipher text (ciphertext) data that has been encrypted. Poly alphabetic cipher in network security mybscit. Chapter 3 block ciphers and the in network security as streams are widely used to protecting privacy of digital information. Key info used in cipher known only to network securityfifth edition by william stallings. Googleusercontent search. A variety of attacks against stream cipher exist;(algebraic and 16 aug 2016 the following example explains about poly alphabetic in netwrork security cryptography network select ciphertext obtain plaintext to attack either or en decrypt 30 apr 2017 lecture notes on computer by avi kak deciphering decryption recovering from also, ciphers for such as diffie hellman rsa require large number bits. Design and analysis of stream cipher for network security. What is cipher? Definition from whatis searchsecurity. William stallings, cryptography and network security 3 e. This paper suggests a simple block cipher scheme to effectively there are several types of data encryptions which form the basis network security. Lecture 3 block ciphers and desdepartment of it, bo akademi universityunconditional security. Cryptography and encryptions,network security,caesar cipherunit 1 symmetric cipher mod modelcryptography network security chapter 3. No matter how much computer power is available, the cipher cannot be broken since ciphertext provides insufficient What cipher? Definition from whatis searchsecurity. Cryptography and network security 3 e. A cipher (pronounced sai fuhr) is any method of encrypting text (concealing its readability and meaning). In addition to the cryptographic meaning, cipher also means (1) someone insignificant, and (2) a combination of symbolic letters as in an entwined weaving for monogram ciphertext is encrypted text. What is ciphertext? Definition from whatis what a cipher? techopediawhat cipher text (ciphertext)? Webopedia definition. Techtarget definition cipher url? Q webcache. Cryptography and network security bo akademi. Isbn 0 88385 622 william stallings, cryptography and network security, principles practices, 4th edition a cipher enables private communication is often used in email, so that if an encrypted message intercepted by unauthorized user, the cannot trad
Views: 264 Aile Aile
Kerberos Realm
 
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Kerberos Realm explained. Please refer to Cryptography and Network Security - W. Stallings (Pearson, 2011) book, page no. 464 for more details.
Views: 1967 Abdul Mohd
Chapter 2 (Stallings)
 
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Views: 1977 Todd Booth
Chapter 3 (Stallings)
 
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Views: 568 Todd Booth
Kerberos realm
 
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Cryptography and Network Security - W. Stallings (Pearson, 2011) pg. 464
Views: 834 Lee Jack
Chapter 01
 
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Video presentation by: Teacher and Researcher Todd Booth Book Title: Network Security Essentials: Applications and Standards (6th Edition) Author: William Stallings Publisher: Pearson; 6th edition (August 7, 2016) Language: English ISBN-10: 013452733X ISBN-13: 978-0134527338 For 35% off the price, please order via the author William Stallings web page: http://williamstallings.com/NetworkSecurity/ From the author’s web page, you can get the coupon code at this web page: http://williamstallings.com/DiscountBookPurchase/
Views: 3627 Todd Booth
Encryption using RSA Algorithm
 
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Problem Solved from William Stallings Book : Cryptography and Network Security Fifth Editon
Views: 17044 Random Videos
Network Security I - course introduction
 
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Lecture: Network Security I - course introduction
Views: 810 Marian Marinov
Principles of Computer Security - George Danezis
 
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Principles of Computer Security, by George Danezis The opening lecture of SecAppDev 2014 by George Danezis on the foundational principles of computer security. Computer security: do the right thing in the face of a well-resourced strategic adversary. George Danezis is a Reader in Security and Privacy Engineering at the Department of Computer Science of University College London. He has been working on anonymous communications, privacy enhancing technologies (PET), and traffic analysis since 2000. He has previously been a researcher for Microsoft Research, Cambridge; a visiting fellow at K.U.Leuven (Belgium); and a research associate at the University of Cambridge (UK), where he also completed his doctoral dissertation under the supervision of Prof. R.J. Anderson. His theoretical contributions to the PET field include the established information theoretic metric for anonymity and pioneering the study of statistical attacks against anonymity systems. On the practical side he is one of the lead designers of the anonymous mail system Mixminion, and has worked on the traffic analysis of deployed protocols such as Tor. His current research interests focus around smart grid privacy, peer-to-peer and social network security, as well as the application of machine learning techniques to security problems. He has published over 50 peer-reviewed scientific papers on these topics in international conferences and journals. He was the co-program chair of ACM Computer and Communications Security Conference in 2011 and 2012, IFCA Financial Cryptography and Data Security in 2011, the Privacy Enhancing Technologies Workshop in 2005 and 2006. He sits on the PET Symposium board and he regularly serves in program committees of leading conferences in the field of privacy and security.
Views: 3058 secappdev.org
overview of cryptographic techniques
 
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Subscribe today and give the gift of knowledge to yourself or a friend overview of cryptographic techniques Overview of Cryptographic Techniques . Hector M Lugo-Cordero CIS 4361 Secure Operating System Administration. 1. Resources Used. Lecture slides from Dr Ratan Guha CNT 6519 Wireless Security Forensics Cryptography and Network Security, Fourth Edition, by William Stallings Slideshow 2971598 by garry show1 : overview of cryptographic techniques show2 : overview of cryptographic techniques show3 : resources used show4 : resources used show5 : outline show6 : outline show7 : some basic terminology show8 : some basic terminology show9 : conventional encryption principles show10 : conventional encryption principles show11 : characteristics of cryptographic techniques show12 : characteristics of cryptographic techniques show13 : symmetric encryption show14 : symmetric encryption show15 : symmetric cipher model show16 : symmetric cipher model show17 : requirements show18 : requirements show19 : brute force search show20 : brute force search show21 : classical substitution ciphers show22 : classical substitution ciphers show23 : caesar cipher show24 : caesar cipher show25 : caesar cipher1 show26 : caesar cipher1 show27 : monoalphabetic cipher show28 : monoalphabetic cipher show29 : playfair cipher show30 : playfair cipher show31 : playfair key matrix
Views: 139 Magalyn Melgarejo
Encryption using RSA 9.2 (c)
 
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Question No. 9.2 (c) Cryptography and Network Security By William Stallings Fifth Edition Buy this book : http://fkrt.it/RHJEagNN
Views: 400 Random Videos
DES Algo_part-I(ISS) by Sandeep Upadhyay (for CS & IT VIIIth Sem uder RTU)
 
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DES algo is very important algo in subject Information System Security (ISS). I, Sandeep Upadhyay have explained it by referring three books (Information System Security by William Stallings, Distributed System by A. S. Tanenbaum and Cryptography & Network Security by Atul kahate).
Views: 1276 Sandeep Upadhyay
Practice Test Bank for Cryptography and Network Security Principles Practice by Stallings 6 Edition
 
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Contact us to acquire the Test Bank and/or Solution Manual; Email: atfalo2(at)yahoo(dot)com Skype: atfalo2
DES Algo_part-II(ISS) by Sandeep Upadhyay (for CS & IT VIIIth Sem uder RTU)
 
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DES algo is very important algo in subject Information System Security (ISS). I, Sandeep Upadhyay have explained it by referring three books (Information System Security by William Stallings, Distributed System by A. S. Tanenbaum and Cryptography & Network Security by Atul kahate).
Views: 399 Sandeep Upadhyay
NETWORK SECURITY - PGP (E-MAIL SECURITY)
 
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PGP - PRETTY GOOD PRIVACY THIS IS ONE OF THE EMAIL SECURITY MECHANISM PGP SERVICES 1. AUTHENTICATION WITH DIGITAL SIGNATURE 2. CONFIDENTIALITY 3. EMAIL COMPATABILITY 4. ZIP OR COMPRESSION FUNCTION.
Canon 80D, Joby UltraFit Sling, and other recent purchases
 
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Starting off with the Canon 80D. Next we have the Joby UltraFit Sling Strap and Camera Tether. I added a Cryptography book to my collection: Cryptography and Network Security by William Stallings Lastly my mom ordered me the magazine Vegetarian Times.
Views: 162 Vincent Vega Vegan
Symmetric Encryption: Internal & External Error Control
 
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Briefly explain about the internal & external error control. Reference: Cryptography & Network Security - W. Stallings (Pearson, 2011)
Views: 703 Zhi Xuan Tan
7 PUBLIC KEY CRYPTOGRAPHY
 
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Public Key cryptography chapter9 Reference william stallings presented by P.V.S Sriram Lecturer in MCA Dept KBN College.
Views: 205 sriram panjagala
Rsa algo basic steps
 
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in.this video basic concept of rsa is explain with example. Tips- to remember public key formula u can use keyword pen i.e public key (e,n) for selecting e go with smallest prime number ....
Views: 79 Berozgar engineer
RSA Encryption (step 2)
 
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RSA Encryption (step 2)
Views: 52725 Art of the Problem
CSE468 Computer Network Security F16 Course Overview
 
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This is the playlist of ASU CSE 468 Computer Network Security Fall 2016 class videos. The instructor is Ziming Zhao.
Views: 617 Ziming Zhao
Polygraphic Part 1 - Playfair Ciphers Encryption/Decryption
 
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A beginner's guide to Polygraphic Ciphers Part 1 (Playfair Cipher Encryption/Decryption
Views: 55661 Daniel Rees
Introduction
 
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Cryptography and Network Security by Prof. D. Mukhopadhyay, Department of Computer Science and Engineering, IIT Kharagpur. For more details on NPTEL visit http://nptel.iitm.ac.in
Views: 196341 nptelhrd
Introduction to Security Mechanisms: Computer Security Lectures 2014/15 S2
 
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This video is part of the computer/information/cyber security and ethical hacking lecture series; by Z. Cliffe Schreuders at Leeds Beckett University. Laboratory work sheets, slides, and other open educational resources are available at http://z.cliffe.schreuders.org. The slides themselves are creative commons licensed CC-BY-SA, and images used are licensed as individually attributed. Topics covered in this lecture include: Security goals Prevention Means that an attack will fail For example, by employing controls Detection Determine that an attack has occurred or is happening For example, by monitoring activity Recovery Stop an attack and repair damage For example, by restoring data Policy A security policy defines what is, and what is not, allowed Policy can be a set of rules for a program or for people to follow Should be designed to mitigate threats Processes and procedures need to be in place to implement policy and manage controls... Controls... A 'security mechanism', or 'control', is something that enforces a security policy Can be a method, technical tool, or procedure Actively mitigates threats Examples of controls Antimalware Firewalls Authentication: passwords Access controls: file permissions Sandboxes and Virtualisation Encryption Physical controls: door locks Defence in depth Military strategy, applies to security Multiple lines of defence, so if one control fails there are other controls in place For example, if your laptop is stolen, and your files are encrypted Other examples? Threat: malware Malware: software that is intentionally malicious Virus Worm Trojan horse What can we do to prevent malware? Antimalware (aka antivirus) Signature-based: detects known malware based on signatures Anomaly-based (aka heuristics): detects suspicious behaviour Not very good at detecting zero-day (new) malware Threat: software vulnerabilities Software vulnerabilities: security weakness in a program A program can have a programming or design flaw that allows an attacker to subvert its behaviour What can we do to defend against software vulnerabilities? Software updates Updates are an important part of the process of maintaining computer systems What difficulties does this introduce? How should an organisation manage updates? Stable vs experimental software Threat: external network access External attackers are looking for any weaknesses in your servers Scanning for software they can attack Most computers have a number of programs installed, which could be attacked How can we avoid being attacked? Firewalls Firewalls can limit who can talk to what Enforces the network traffic that is allowed Reduces the attack surface Threat: local malicious code Your antimalware / software updates have failed You have malicious code running on your computer, and it has not been detected Defences? Sandboxes and virtualisation Sandboxes and Virtualisation can restrict what programs can do Limits damage via isolation Examples? Threat: people Different people in your organisation need access to different resources If employees have access to everything, there is a greater risk that something will go wrong Defences? Authentication Verify an identity Factors: What they know What they have Who they are Where they are Access controls Control access to resources Physical / digital Requires authentication first Subjects: users and programs Objects: files and network resources File permissions Encryption Control access to information by hiding its meaning Requires a key/password to decrypt (obtain the original information) Physical security Often digital security can be subverted without physical security Examples? Examples of physical security? Threat: undetected breach Something happens (a security incident), and you don't know about it Monitoring Intrusion detection systems (IDS): detect attacks Typically monitors network traffic Monitor logs Monitor changes to files Respond to incidents Managing security Managing security includes: Planning security goals Deciding how to manage risk Applying the appropriate controls Maintaining them Monitoring activity Responding to incidents Recovering from incidents Dealing with people
Views: 2752 Z. Cliffe Schreuders
Needham-Schroeder Protocol
 
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Some explanation about how Needham-Schroeder Protocol works. Tools used - Microsoft Power Point 2013 Reference from Cryptography and Network Security - W. Stallings (Pearson, 2011) pg 448 to 451.
Views: 17932 Pu Wei Jian
More Number Theoretic Results
 
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Cryptography and Network Security by Prof. D. Mukhopadhyay, Department of Computer Science and Engineering, IIT Kharagpur. For more details on NPTEL visit http://nptel.iitm.ac.in
Views: 4623 nptelhrd
QUESTION No 11 || TEST SERIES 12 || GATE 2019 || COMPUTER SCIENCE
 
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IMPORTANT AND STANDARD BOOKS FOR GATE EXAMINATION: ====================================================== Discrete Mathematics and Its Applications ***** Kenneth H. Rosen Computer Architecture - A Quantitative Approach ***** Hennessey, Patterson Computer Organisation ***** Hamacher Computer Networks ***** Tanenbaum,Andrew Tanenbaum Data Communications and Networking ***** Behrouz A.Forouzan Compiler Design ***** Aho Ullman Sethi Programming in C language ***** Kernighan Ritchie Introduction to Algorithms ***** Cormen Leiserson Rivest and Stein - MIT Press Data Structures and Algorithm Analysis in C ***** Mark Allen Weiss Database System Concepts ***** Korth Fundamentals of Database Systems ***** Navathe Computer Organization and Architecture ***** William Stallings Computer System Architecture ***** Moris Mano Operating System Concepts ***** Silberschatz Galvin Introduction to Formal Languages and Automata ***** PETER LINZ Introduction to the Theory of Computation ***** MICHAEL SIPSER Massachusetts 1. An Introduction to Formal Languages and Automata by Peter Linz. This is the best book for GATE as far as TOC is concerned. It covers all the topics with lucid explanation and interesting problems at the end of each chapter. If one goes through this book nicely, it will help you to score full marks in TOC. 2. Discrete Mathematics and Its Applications by Kenneth Rosen. This is the perfect book for Introductory Discrete Mathematics, highly recommended for GATE. This book is a must read for any computer scientist. It will help you build a solid foundation in combinatorics, graph theory which carries over through Algorithms as well. Especially the first chapter on propositional logic is intriguing. 3. Introduction to Algorithms (C.L.R.S) If computer science is religion, this book is Gita/Kuran/Bible. The Art of Computer Programming, by Donald E. Knuth (Volumes 1-4) are Vedas. CLRS is necessary and sufficient for GATE. Ideally one should implement the algorithms in C/C++. 4. Database Systems by Elmasri, Navathe It is an excellent book for GATE. You can depend on this book for the entire syllabus. In addition, you can refer Database Management Systems by Raghu Ramakrishnan for transaction management. 5. Computer System Architecture by Morris Mano This book will clear your basics and you should be able to solve previous GATE questions with ease. In addition, for pipelining Computer Organization by HAMACHER can be referred. 6. The C Programming Language by Dennis Ritchie Just Stick with this book for C Programming Language. 7. Data Communications and Networking by Forouzan This is a comprehensive book for a vast subject and can be referred to clear networking concepts. Computer Networking by James F. Kurose is quite popular among GATE aspirants. 8. Operating System Concepts by Galvin This is a very interesting book, covering entire GATE syllabus and easy to understand. 9. Data Structures Using C by Tenenbaum A solid grasp on data structures is very important for a good programmer and this book is a great one to start with & Sufficient for GATE. 10. Compilers: Principles, Techniques, & Tools by Ullman This is perhaps the only book where examples are given excellently. It will help you to understand the compiler concepts well. 11. Modern Digital Electronics by R.P Jain This is a very good book for digital and can be read along with NPTEL lecture by Prof.S.Srinivasan. Digital Logic and Computer Design by M. Morris Mano is an excellent book.
RSA problem with example
 
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Recorded by mr. prakhar calculate d value
Views: 580 Chethan Reddy
Lecture - 40 Secured Communication - II
 
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Lecture Series on Data Communication by Prof.A. Pal, Department of Computer Science Engineering,IIT Kharagpur. For more details on NPTEL visit http://nptel.iitm.ac.in
Views: 10853 nptelhrd
Cipher
 
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In cryptography, a cipher (or cypher) is an algorithm for performing encryption or decryption—a series of well-defined steps that can be followed as a procedure. An alternative, less common term is encipherment. To encipher or encode is to convert information from plain text into cipher or code. In non-technical usage, a 'cipher' is the same thing as a 'code'; however, the concepts are distinct in cryptography. In classical cryptography, ciphers were distinguished from codes. Codes generally substitute different length strings of characters in the output, while ciphers generally substitute the same number of characters as are input. There are exceptions and some cipher systems may use slightly more, or fewer, characters when output versus the number that were input. This video is targeted to blind users. Attribution: Article text available under CC-BY-SA Creative Commons image source in video
Views: 115 Audiopedia
Lecture - 1 Introduction and Course Outline - Data Communication
 
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Lecture Series on Data Communication by Prof.A. Pal, Department of Computer Science Engineering,IIT Kharagpur. For more details on NPTEL visit http://nptel.iitm.ac.in
Views: 370938 nptelhrd
Computer Security: Principles and Practice, Global Edition by William Stallings
 
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More Info : http://j.mp/2diOVJ1 Computer Security: Principles and Practice, Third Edition, is ideal for courses in Computer/Network Security. In recent years, the need for education in computer security and related topics has grown dramatically—and is essential for anyone studying Computer Science or Computer Engineering. This is the only text available to provide integrated, comprehensive, up-to-date coverage of the broad range of topics in this subject. In addition to an extensive pedagogical program, the book provides unparalleled support for both research and modeling projects, giving students a broader perspective. It covers all security topics considered Core in the EEE/ACM Computer Science Curriculum. This textbook can be used to prep for CISSP Certification, and includes in-depth coverage of Computer Security, Technology and Principles, Software Security, Management Issues, Cryptographic Algorithms, Internet Security and more. The Text and Academic Authors Association named Computer Security: Principles and Practice, First Edition, the winner of the Textbook Excellence Award for the best Computer Science textbook of 2008. Teaching and Learning Experience This program presents a better teaching and learning experience—for you and your students. It will help: Easily Integrate Projects in your Course: This book provides an unparalleled degree of support for including both research and modeling projects in your course, giving students a broader perspective. Keep Your Course Current with Updated Technical Content: This edition covers the latest trends and developments in computer security. Enhance Learning with Engaging Features: Extensive use of case studies and examples provides real-world context to the text material. Provide Extensive Support Material to Instructors and Students: Student and instructor resources are available to expand on the topics presented in the text.
Computer Security by William Stallings
 
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More Info : http://bitly.com/2ky49gg This is the eBook of the printed book and may not include any media, website access codes, or print supplements that may come packaged with the bound book. Computer Security: Principles and Practice, Third Edition, is ideal for courses in Computer/Network Security. It also provides a solid, up-to-date reference or self-study tutorial for system engineers, programmers, system managers, network managers, product marketing personnel, system support specialists. In recent years, the need for education in computer security and related topics has grown dramatically—and is essential for anyone studying Computer Science or Computer Engineering. This is the only text available to provide integrated, comprehensive, up-to-date coverage of the broad range of topics in this subject. In addition to an extensive pedagogical program, the book provides unparalleled support for both research and modeling projects, giving students a broader perspective. It covers all security topics considered Core in the EEE/ACM Computer Science Curriculum. This textbook can be used to prep for CISSP Certification, and includes in-depth coverage of Computer Security, Technology and Principles, Software Security, Management Issues, Cryptographic Algorithms, Internet Security and more. The Text and Academic Authors Association named Computer Security: Principles and Practice, First Edition, the winner of the Textbook Excellence Award for the best Computer Science textbook of 2008. Teaching and Learning Experience This program presents a better teaching and learning experience—for you and your students. It will help: Easily Integrate Projects in your Course: This book provides an unparalleled degree of support for including both research and modeling projects in your course, giving students a broader perspective. Keep Your Course Current with Updated Technical Content: This edition covers the latest trends and developments in computer security. Enhance Learning with Engaging Features: Extensive use of case studies and examples provides real-world context to the text material. Provide Extensive Support Material to Instructors and Students: Student and instructor resources are available to expand on the topics presented in the text.