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RSA CSE RSA enVision Essentials

RSA certified techniques Engineer (RSA/CSE) | killexams.com existent Questions and Pass4sure dumps

This seller-certain Certification is offered by:RSA, The security Division of EMCBedford, MA USAPhone: 781-301-5000Email: This e mail address is being blanketed from spambots. You necessity JavaScript enabled to view it.

ability stage: Intermediate                          popularity: Discontinued

low-budget: $a hundred and fifty (shortest song)               

abstract:For safety professionals who support, install or configure traffic safety methods using RSA items. This includes SecurID, enVision, access supervisor and Digital certificate answer.

initial requirements:This software has been discontinued.You occupy to pass the RSA systems Engineer exam to your chosen tune ($150) and sign the RSA certified security professional contract. There are a brace of tracks to pick from: SecurID, enVision, access manager and Digital certificate solution. working towards is purchasable however not required. This application has been discontinued.

continuing necessities:Recertification is required for every predominant product unencumber and for certain factor releases that RSA deems sufficiently important.

Offline elements:associated counseled (but not required) working towards courses are available through RSA.

See sum Rsa Certifications

dealer's web page for this certification


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RSA 2014: four luminaries debate underestimated protection threats | killexams.com existent Questions and Pass4sure dumps

(This weblog set up was written by using Christina Torode, Editorial Director of SearchCIO Media neighborhood)

I spent a whirlwind travel to the RSA conference this week in San Francisco putting out within the assistance programs protection affiliation (ISSA) booth, catching up with the group’s participants as they popped in. They observed many things: cyber war, the want for collective safety intelligence, how vital being a member of a gaggle equivalent to ISSA is to a career, Edward Snowden, how tons tackle entry protection companies should provide the govt, how threats are getting increasingly political in nature.

This post would live extraordinarily long if I went into sum of the discussions, but listed below are few snippets of the conversations where ISSA members and traffic luminaries relate threats the safety profession deserve to pay extra consideration to:

Marcus Ranum, CSO of Tenable and developer of the primary commercial firewall“The threats aren’t truly fresh or emerging ones. We’re sum the time up in opposition t errors they made 10 or 15 years in the past. We’re really simply now starting to contend with complications raised through allotted computing, which is configuration of sad. They haven’t even gotten to transitive believe. Hackers are starting to live mindful transitive occupy confidence and we’re going to occupy a significant issue when that occurs.”

Howard Schmidt, professor at Idaho state university, advisor with Ridge-Schmidt Cyber and former White condo cyber advisor for Presidents George W. Bush and Barack Obama“The cellular ambiance. When there were simply just a few BYO instruments, there wasn’t lots of connectivity so they weren’t truly a hazard to the atmosphere. Now virtually everything has an IP address and is linked to a network to network through the home or travail environment. They in fact haven’t view that through. Some application is neatly vetted, but other software may besides live downloaded with malware, that piece of added piece of added utility that may drag out your PII.

What individuals pay even much less attention to is sum the instruments in the home. The television is fitting an internet gadget trying to handle access to lots of issues. optimistically they received’t travel down the path [with home devices such as the TV] and consequence the identical mistakes we've with other programs. They comprehend that there are vulnerabilities, they should fetch them fastened and travel to the manufacturer and philosophize ‘It’s exquisite that you occupy this application, but it additionally exposes me.'”

Dave Cullinane, former eBay CISO and founder of SecurityStarfish“The stage of assault sophistication is getting particularly frightening. Ebay turned into a know-how company so they had the components and sort of funds to live able to access shared assistance and intelligence on what’s going on across the traffic and businesses. small and mid-dimension corporations don’t occupy these resources. access to respectable intelligence [analytics] on what to search for and what to attain about [a security threat] helps you invest the reform means.

one other area that may abet is application-defined perimeters. Coca-Cola and the Cloud safety Alliance are working with open requisites, some technology that has been round for a while, that has the capacity to dispose of the lore for great agencies of attacks.

an additional advantageous measure? if your purchasers pose a danger to your own safety, teach them the artery to sanctuary themselves and provides them the tools to attain it. Ebay gave its clients Microsoft security essentials, which allowed their purchasers to uncover lots of hidden threats.”

Gene “Spaf” Spafford, professor of computing device science at Purdue school“I don’t believe I’ve considered the ease that i would dependence a fresh assault. lots of the things taking Place are assault technologies and behaviors which occupy been general about for decades, however practitioners within the sphere these days don’t learn about them. actually plenty of agencies which occupy been attacked haven't afflicted to consequence applicable investments in security, so when these attacks ensue sum and sundry goes ‘wow that’s a surprise,’ however it isn’t in reality.

The fresh collection of attacks on POS terminals to bring together credit card numbers, that’s not new. It’s malware, going after very own tips and these groups had been ignoring the warnings.

What they are on account that’s a cramped bit diverse is higher scale and a bit extra politically prompted aspect to assaults. The Syrian electronic military, for instance. those are demanding because they don’t occupy a coordinated overseas response to the wide scale cybercrime and the politically motivated habits.”

Christina Torode oversees insurance and particular tasks for SearchCIO.com, SearchCIO-Midmarket.com and SearchCompliance.com. She has been a excessive-tech journalist for more than a decade. before joining TechTarget, she became a reporter for technology exchange e-book CRN, masking a variety of beats together with protection, networking, telcos and the channel. She additionally frolicked as a company reporter and editor with Eagle Tribune Publishing in japanese Massachusetts.


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The Computer Security Bookshelf, piece 1 | killexams.com existent questions and Pass4sure dumps

According to recent IT employment surveys, certification studies, and polls of IT professionals, system and network security are shaping up as "the" core competencies worthy of cultivation. To abet you explore this fascinating field, and value its breadth and depth, Ed Tittel has set together a collection of two articles that together cover information security (or infosec, as it's sometimes called) as completely as possible. sum the books in here are worth owning — though you may not necessity to acquire sum books on identical or related topics from these lists. Together this compilation documents the best-loved and respected titles in this field. This is the first of two parts, so live certain to check out its successor anecdote as well.

Editor's Note: This article was fully revised and updated in December of 2004.

Like this article? They recommend 

In this story, I present the first installment of a two-part anecdote on computer security books, in which I recommend titles that are bound to live noteworthy for those with an interest in this field. In my particular case, I'm silent reading and studying to recall the Certified Information Systems Security Professional (CISSP) exam and digging my artery through the most useful elements of a great body of travail on this theme matter.

This list and its companion (" The Computer Security Bookshelf, piece 2") emerged from the following research:

  • I drew on my own reading in this sphere since the early 1990s. Currently, my bookcases already comprise 3-plus shelves of security books.
  • I consulted every expert security reading list I could find, including recommended reading for a broad range of security certifications, where available.
  • I asked my friends and colleagues who travail in this sphere to provide feedback on my initial findings and to suggest additional entries.
  • Expert and ordinary reader reviews—and in about half the items mentioned here, my own personal experience—show me that there's an Amazing number of truly outstanding books in this field. If you find yourself reading something you don't like or can't understand on this topic, don't live apprehensive to investigate the alternatives. There are plenty of them!

    To avoid the potential unpleasantness involved in ranking these titles, I present them in alphabetical order indexed by the primary author's ultimate name.

    Adams, Carlisle and Steve Lloyd: Understanding PKI: Concepts, Standards, and Deployment Considerations, 2e, Addison-Wesley, 2002, ISBN: 0672323915.Covers the basic principles needed to understand, design, deploy and manage safe, secure PKI installations and information related to the issuance, use, and management of digital certificates. Provides special accent on certificates and certification, operational considerations related to deployment and consume of PKI, and germane standards and interoperability issues. A worthy overall introduction to the topic of PKI that's not too deeply technical.

    Allen, Julia H.: The CERT pilot to System and Network Security Practices, Addison-Wesley, 2001, ISBN: 020173723X.Here, the author distills numerous best practices and recommendations from the Computer Emergency Response Team (CERT) and its vast body of experience with computer security incidents, exploits, and attacks. counsel is couched generically rather than in terms of particular platforms or applications, so some translation will live necessary to implement that advice. Topics covered comprise hardening systems and networks, detecting and handling break-ins or other types of attack, and designing efficient security policies.

    Bishop, Matt: Computer Security: expertise and Science, Addison-Wesley, 2003, ISBN: 0201440997.Professor Matt Bishop packs his security expertise into this well-written, comprehensive computer security tome. This book has been successfully tested at advanced undergraduate and introductory graduate levels, and can live a useful addition to security certification courses. Topics covered comprise the speculative and practical aspects of security policies, models, cryptography and key management, authentication, biometrics, access control, information rush and analysis, and assurance and trust.

    Bosworth, Seymor and Michael E. Kabay: Computer Security Handbook, 4e, John Wiley & Sons, 2002, ISBN: 0471412589.The fourth edition of a accepted general computer security reference, this version provides updates to a worthy deal of useful and timely information. Essentially a succession of articles on a broad range of topics, this book covers the full spectrum of notable security matters reasonably well. Chapters are lengthy, detailed, and full of information. They cover notable management issues such as security policy, legal issues, risk management, and computer crime; basic safeguards such as contingency planning, calamity recovery, security auditing, and application controls; and deal with sum kinds of protection topics from hardware, to software and information security, ensuring security of data, records, and forms, encryption, using contractors and services, and applying security to PCs.

    Caloyannides, Michael A.: Computer Forensics and Privacy, 2e, Artech House, 2004, ISBN: 1580538304.A technical yet readable title that addresses privacy rights for individuals who seek to protect personal or confidential information from unauthorized access. Includes coverage of computer forensic tools and techniques, as well as methods individuals might consume to combat them. Covers consume of disk-wiping software, methods to achieve anonymity online, techniques for managing security, and confidentiality, encryption, wireless security, and legal issues.

    Cheswick, William R. and Steven M. Bellovin: Firewalls and Internet Security, Addison-Wesley, 1994, ISBN: 0201633574.I comprise this title because of its worthy coverage of IP security topics and its excellent analysis of a computer assail and its handling. The firewall coverage is superb; but the authors' coverage of Internet security topics and techniques is besides timely, interesting, and informative.

    Cole, Eric: Hackers Beware: Defending Your Network From The Wiley Hacker, fresh Riders, 2001, ISBN: 0735710090.A star instructor at the SysAdmin, Audit, Network, Security (SANS) Institute, Cole distills his extensive lore and experience in this book. This book provides ample coverage of both vile and defensive tools in the computer security arsenal, as well as a worthy overview of assail strategies, best security practices, security concepts and terminology. Thus, the book combines a useful examination of common vulnerabilities and attacks, with explanations that elaborate how those vulnerabilities may live exploited and attacks successfully waged. To the capitalize of administrators and would-be security professionals, it besides covers how to detect and respond to attacks when necessary, and to avoid or deflect them where possible.

    Cooper, sign et al.: Intrusion Signatures and Analysis, fresh Riders, 2001, ISBN: 0735710635.In this book, numerous network and system attacks are documented and described, along with methods that administrators can consume to recognize ("identify a signature," as it were) and deal with such attacks. Aimed in piece at helping individuals seeking the GIAC Certified Intrusion Analyst (GCIA) certification, the book explores a great catalog of attacks, documents the tools intruders consume to mount them, and explains how to handle or obviate them. By working from protocol traces, or intrusion detection or firewall logs, the book besides teaches skills for recognizing, analyzing, and responding to attacks.

    Crothers, Tim: Implementing Intrusion Detection Systems : A Hands-On pilot for Securing the Network, Wiley, 2002, ISBN: 0764549499.Though there ae lots of books that talk about intrusion detection systems, this one stands out for several reasons. First, it's short, concise, and direct: a worthy introduction to the topic. Second it's leavened with qualified counsel and best practices on deploying and using IDS technology, and includes worthy diagrams and explanations. It's probably not the only book you'll want on this topic, but it's a worthy Place to start digging in.

    Garfinkel, Simson, Alan Schwartz, and Gene Spafford: Practical Unix and Internet Security, 3e, O'Reilly & Associates, 2003, ISBN: 0596003234.Newly updated, this book remains one of the best general security administration books around. Starts with the fundamentals of security and Unix, works its artery through security administration topics and techniques clearly and systematically, and includes lots of worthy supplementary information that's silent quite useful today. While it's focused on a particular operating system and its inner workings, this book will live useful even for those who may not rub shoulders with Unix every day.

    Garfinkel, Simson et al: Web Security, Privacy, and Commerce, O'Reilly & Associates, 2002, ISBN: 0596000456.Tackles the existent root causes behind well-publicized attacks and exploits on Web sites and servers prerogative from the front lines. Explains the sources of risk, and how those risks can live managed, mitigated, or sidestepped. Topics covered comprise user safety, digital certificates, cryptography, Web server security and security protocols, and e-commerce topics and technologies. A worthy title for those interested in Web security matters.

    Gollman, Dieter: Computer Security, John Wiley & Sons, 1999, ISBN: 0471978442.Surveys computer security topics and issues from a broad perspective starting with the notion of security models. It besides covers what's involved in security operating and database systems, as well as networks. Widely adopted as an upper-division undergraduate or introductory graduate level textbook in computer science curricula. besides includes a comprehensive bibliography (though a bit dated now).

    Harris, Shon: CISSP All-in-One Exam Guide, 2e, Osborne McGraw-Hill, 2003, ISBN: 0072229667.There are numerous other titles about the CISSP exam available, but this is the only one to fetch towering ratings from both security professionals and from ordinary book buyers. Covers the 10 domains in the Common body of lore (CBK) that is the focus of the CISSP exam, but besides includes lots of examples, case studies, and scenarios. Where other books summarize, digest, and condense the information almost into almost unrecognizable forms, this book is well written, explains most key topics quite well, and lays out the landscape that the CISSP covers very well. Those with infosec training or backgrounds may live able to consume this as their only study resource, but those who want such background will want to read more widely. A value-add to this book are the accompanying simulated rehearse exams and video training on the CD.

    Kahn, David: The Codebreakers: The Comprehensive History of underhand Communication from Ancient Times to the Internet, Scribner, 1996, ISBN: 0684831309.If you're looking for a single, comprehensive, and exhaustive treatment of the theme of cryptography, this is the book for you. Kahn starts with simple substitution ciphers that travel sum the artery back to the invention of writing in the Tigris/Euphrates cultures to techniques used in the present day. live warned that this book is rather more historical and descriptive in its coverage than it is a how-to book, but it is absolutely the prerogative Place to start for those who are interested in this topic and who want to fetch the best workable background before diving into more technical detail.

    Kruse, Warren G. and Jay Heiser: Computer Forensics: Incident Response Essentials, Addison-Wesley, 2001, ISBN: 0201707195.A current computer security buzzword is "incident response" or "incident handling," acceptation the activities involved in detecting and responding to attacks or security breaches. This book describes a systematic approach to implementing incident responses, and focuses on intruder detection, analysis of compromises or damages, and identification of workable culprits involved. The accent is as much on preparing the "paper trail" necessary for successful prosecution of malefactors as it is in exploring the principles involved in formulating incident response teams, strategies, security enhancements, and so forth. Coverage extends to analysis of assail tools and strategies, as well as monitoring and detecting tools and techniques. An enthralling read, and a very useful book.

    McClure, Stuart, Joel Scambray, and George Kurtz: Hacking Exposed: Network Security Secrets & Solutions, 4e, Osborne McGraw-Hill, 2003, ISBN: 0072227427.One of the best-selling computer security books of sum time, this latest edition updates the authors’ catalog of hacker tools, attacks, and techniques with a keen eye on striking the prerogative defensive posture. By operating system and sort of attack, readers fetch a desultory to learn about what tools are used for attacks, how they work, what they can expose or allow, and how to protect systems and networks from their illicit use. The fourth edition includes only rudimentary Windows XP security issues and answers. A companion CD ROM includes tools, Web pointers, and other text supplements. Readers looking for Windows 2003 and XP SP2 coverage are advised to wait for the fifth edition, due out in April, 2005.

    Nash, Andrew et al.: PKI: Implementing & Managing E-Security, Osborne McGraw-Hill, 2001, ISBN: 0072131233.Prepared by a team of authors at leading security hard RSA Technologies, this book explores the security needs that motivate deployment and consume of PKI, as well as the underlying concepts, terminology, tools, and techniques related to the subject. Making excellent consume of diagrams to illuminate case studies and proposed configurations, the besides addresses key concepts including managing keys and certificates, authentication, and dependence models in worthy detail. besides addresses how to cipher ROI on PKI investments.

    Northcutt, Stephen et al.: Inside Network Perimeter Security: The Definitive pilot to Firewalls, Virtual Private Networks (VPNs), Routers, and Intrusion Detection Systems, fresh Riders, 2002, ISBN: 0735712328.Readers will relish the broad yet abysmal coverage this book offers regarding sum aspects of network perimeter protection. The authors skillfully teach the reader how to "think" about security issues—threats, hack attacks, exploits, trends, and so on—rather than handhold the reader with step-by-step solutions to specific problems. This approach helps network security professionals learn how to consume a variety of tools, analyze the results, and consequence efficient decisions. Topics covered comprise designing and monitoring network perimeters for maximum security, firewalls, packet filtering, access lists, and expanding or improving the security of existing networks. Because the book was developed jointly with SANS Institute staff, it can live used as a study aid for individuals preparing for GIAC Certified Firewall Analyst (GCFW) certification.

    Northcutt, Stephen and Judy Novak: Network Intrusion Detection, 3e, fresh Riders, 2002, ISBN: 0735712654.A short but information-packed book that works it artery through numerous real, documented system attacks to teach about tools, techniques, and practices that will aid in the recognition and handling of so-called "security incidents." The authors consequence extensive consume of protocol traces and logs to elaborate what benevolent of assail took place, how it worked, and how to detect and deflect or foil such attacks. Those who travail through this book's recommendations should live able to foil the attacks it documents, as they learn how to recognize, document, and respond to potential future attacks. One of the best books around for those who must configure router filters and responses, monitor networks for signs of potential attack, or assess workable countermeasures for deployment and use.

    Peltier, Thomas R.: Information Security Risk Analysis, Auerbach, 2001, ISBN: 0849308801.If there's one key activity that captures the essence of the discipline involve in practicing systems and network security, it's the analysis of risks and related exposures that properly precede the progress of any well-formulated security policy. The techniques introduced in this book permit its readers to recognize and set expense tags on potential threats to an organization's computer systems, live they malicious or adventitious in nature. Covers well-known techniques such as FRAP (facilitated risk analysis process) and PARA (practical application of risk analysis), as it takes a step-by-step approach to identify, assessing, and handling potential sources of risk. The second edition of this book is scheduled for release in the Spring of 2005.

    Rada, Roy: HIPAA @ IT Reference, 2003 Edition: Health Information Transactions, Privacy, and Security, Hypemedia Solutions, 2002, ISBN: 1901857174.HIPAA stands for the Health Insurance Portability and Accountability Act of 1996, a maze of US Government regulations that ring the electronic packaging, storage, use, and exchange of medical records. Because HIPAA has a surprising gain into the private sector (it affects any traffic that handles medical records in any way), this topic receives coverage on most security certification exams and is of concern to IT professionals in general. This book is designed as a reference for such professionals and succeeds admirably in its purpose; basically, it condenses and explains what it takes the US Government thousands of pages to document in under 300 pages.

    Russell, Deborah and G. T. Gangemi: Computer Security Basics, O'Reilly & Associates, 1991. ISBN: 0937175714.In a clear sign that this book lives up to its title, it's silent around (and in print) over 10 years after its initial release. An excellent primer on basic security concepts, terminology, and tools, the book besides covers key elements of the US Government's security requirements and regulations as well. Although dated, it besides provides useful coverage of security devices, as well as communications and network security topics. Many experts recommend this title as an pattern "my first computer security book."

    Schneier, Bruce: Applied Cryptography, John Wiley & Sons, 1995, ISBN: 0471128457.Although there are many qualified books on cryptography available (others emerge in this list) not any of the others approaches this one for readability and insight into the theme matter. This book covers the entire topic as completely as workable in a sole volume, and includes working code examples for most encryption algorithms and techniques (which makes an enthralling alternative to more common mathematical formulae and proofs so common to this subject). Even so, the book is informative, useful, and enthralling even for those who attain not read the code.

    Schneier, Bruce: Secrets and Lies: Digital Security in a Networked World, John Wiley & Sons, 2004, ISBN: 0471453803.A well-known and respected device in the sphere of computer and network security, Schneier brings his unique perspective to the broad topic of digital security matters in this book. He manages to live informative and interesting, often funny, on topics normally known for their soporific value. He besides presents an enthralling philosophy on "security as a perspective or a state of mind" rather than as a recipe for locking intruders, malefactors, or others out of systems and networks. Along the way, he besides presents a useful exposition of the tools, techniques, and irony games hackers consume to penetrate systems and networks around the world. One of the best workable choices on this list for "my first computer security book"—except that other titles (even those on this list) will occupy a mighty tough act to follow!

    Strassberg, Keith, Gary Rollie, and Richard Gondek: Firewalls: The Complete Reference, Osborne McGraw-Hill, 2002, ISBN: 0072195673.In keeping with its name, this pilot truly offers complete coverage of firewall topics, from design, to installation and configuration, and finally, maintenance and management. In addition, the authors tender handy tips on product evaluation—valuable information in this area of high-speed, high-cost hardware. Firewalls discussed in-depth comprise Check Point Firewall-1, Cisco Private Internet Exchange (PIX), NetScreen, SonicWall, and Symantec Enterprise Firewall 6.5, in addition to Microsoft Internet Security and Acceleration (ISA) Server 2000.

    The Honeynet Project: Know Your Enemy: Learning About Security Threats, 2e, Addison-Wesley, 2004, ISBN: 0321166469.In computer security jargon, a honeypot is a system designed to decoy and snare would-be intruders; by extension, a honeynet is a network designed to attain the same thing. The original Honeynet Project involved two years of endeavor from security professionals who set up and monitored a set of production systems and networks designed to live compromised. The pedigree of the group involved is stellar, and so are their results in this second edition, which shares the results of their continuing and detailed observations of attacks and exploits, and their recommendations on how to deal with such phenomena.

    Zwicky, Elizabeth D. et al.: edifice Internet Firewalls, 2e, O'Reilly & Associates, 2000, ISBN: 1565928717.A follow-up to one of the original "big books" of computer security, this second edition walks well in the footsteps of its predecessor. Widely acknowledged as "the" firewall book, it digs into the principles and practices that travel into edifice and implementing Internet firewalls like no other resource I know of. It does not address capabilities or configurations for today's turnkey firewalls, but does attain an excellent job of analyzing and describing security strategies and configuration, both qualified and bad. New, timely topics added comprise streaming media, ActiveX, Java, IPv6, and so on, but the book maintains a focus on securing Internet services and constructing secure firewalls.

    Here are some additional enthralling infosec bibliographies, if you'd like to see other takes on this theme matter (you'll find more in the second piece of this anecdote as well):

    Please transmit me feedback on my selections, including your recommendations for workable additions or deletions. I can't philosophize I'll act on sum such input, but I will esteem sum of it carefully.

    Kim Lindros provided research and fact checking for this article.


    Computer Science Professor Develops FlowRep Algorithm for Creation of 3D Shapes | killexams.com existent questions and Pass4sure dumps

    Describing something to someone who has never experienced it before is difficult, maybe even impossible in some cases. How attain you elaborate color to a blind person? Or how attain you relate an unusual shape to someone who has never seen that shape before? Imagine a computer mouse, for example. The majority of people know exactly what a computer mouse is for, and what it looks like, but what if you happened to encounter one person who had never seen a mouse before? How would you relate a mouse to that person so that they could accurately picture it? If you deem you would occupy a difficult time doing so, you’re not alone.

    Alla Sheffer

    “If you try to elaborate what your computer mouse looks like to someone who has never seen a mouse before, you’re going to struggle to verbally relate its shape,” says Alla Sheffer, a computer science professor at the University of British Columbia. “Humans are qualified at verbally describing colour or dimensions, but cannot easily articulate geometric properties. The easiest artery to relate shapes is to sketch them.”

    If you’re not qualified at drawing, however, that becomes difficult as well, and you could halt up leaving your indigent mouseless friend with a very warped view of what a mouse looks like. So Sheffer developed an algorithm that can generate those sketches for you. Working with Adobe Research and Washington University in St. Louis, she studied Gestalt psychology, which offers insights on how people interpret and understand depth from two-dimensional drawings. She used that information to create an algorithm that can turn everything from airplanes to coffee mugs into detailed, accurate sketches.

    “All you necessity is a dozen strokes or less and people will live able to envision the geometry of an object,” Sheffer says. “This program answers the question about which surface curves they necessity to trace so that human observers can imagine a shape.”

    The algorithm was developed into a program called FlowRep, which Sheffer presented yesterday at SIGGRAPH 2017, the largest computer graphics and interactive techniques conference in the world. The program builds on earlier algorithms developed by Sheffer and her colleagues, which turn sketches and drawings into 3D shapes. By putting the methods together, they can recreate objects through 3D printing and other forms of digital fabrication. It’s yet another artery in which they can create by digital means, bringing something into existence from seemingly nothing.

    So far, FlowRep has performed well in user studies. The algorithm was able to bear shapes comparable to the shapes drawn by professional designers. Sheffer is now looking to expand the research and find additional applications for the program, and to help it so that it can create natural shapes in addition to man-made ones; prerogative now, the algorithm is optimized particularly for man-made objects.

    The research behind FlowRep was published in a paper entitled “FlowRep: Descriptive Curve Networks for Free-Form Design Shapes,” which you can read here. Additional authors comprise Giorgio Gori, Nicholas Vining, Enrique Rosales, Nathan Carr and Tao Ju. You can learn more about FlowRep below:

    [Source/Images: University of British Columbia]

    Discuss in the FlowRep forum at 3DPB.com.


    How to Create Codes That Even the NSA Can’t rupture | killexams.com existent questions and Pass4sure dumps

    NSA security lock

    In a previous post I described mathematicians’ ongoing search for key properties of prime numbers. That endeavor may appear to belong entirely within the realm of simple mathematics; but surprisingly, the importance of primes goes far beyond the abstruse obsessions of ivory-tower mathematicians. In fact, the consume of prime numbers underlies some of the most theatrical events in the intelligence these past weeks: the anecdote behind Edward Snowden’s revelations that the National Security Agency (NSA) is snooping on the communications of both American citizens and European diplomats.

    While the Europeans occupy protested about their internal communications being intercepted by the NSA—ironically—the tools that one can consume for protection from spying by anyone are readily accessible online, in the professional literature, and in publicly-available manuals and textbooks. These methods sum dependence on ingenious uses of prime numbers.

    The essentials of these techniques are far from new. The foundations of a program to create codes so powerful that they could not live broken even if an eavesdropper were to consume the entire available worldwide computing power were laid more than 35 years ago. The year 1976 saw the progress of the Diffie-Hellman key exchange method (named after Whitfield Diffie and Martin Hellman; the names Ralph Merkle, James Ellis, Clifford Cocks, and Malcolm Williamson are often besides associated with it); and the following, 1977, witnessed the appearance of the RSA algorithm. Both methods occupy advanced over the past three and a half decades, but information about their extensions is besides readily available to anyone.

    How attain these techniques work? I will elaborate both methods here—necessarily in a simplified way. (Those interested in learning more can read some of the articles in the links that emerge throughout this post.)

    Alice sends Bob a underhand message

    The Diffie-Hellman key exchange view has been described in a clear and concise artery using an analogy by Terence Tao, whose travail on prime numbers I mentioned in my previous post. The view is as follows. Alice wants to transmit Bob a underhand message (cryptographers prefer to consume “from Alice to Bob” instead of the mundane “from A to B”) and she wants to obviate Eve (the “eavesdropper”) from reading it. So Alice places the message in a box, puts a qualified lock on it, keeps the key, and sends the package to Bob. (If Alice were to separately transmit Bob the key, there would live a desultory that Eve could intercept both the package and the key.)

    Bob has no key to Alice’s lock. So what he does instead is to set his own lock on the box. And he now sends the package back to Alice, locked twice: using both her lock and his. Alice gets the package, removes her own lock using her key, and then sends the box, silent safe because it bears Bob’s lock, back to Bob. Now Bob uses his key, opens the box, and gets the message! Each person here used his or her own lock and key—and yet a message was passed perfectly safely from Alice to Bob.

    The digital version

    This view is implemented digitally in the Diffie-Hellman key exchange. The message to live sent from Alice to Bob is a underhand number, convene it n. Alice’s “key” is an exponent, a, which she chooses, and then uses it to raise n to. So the “locked box with the message” that Alice sends Bob is na. Bob has his own “key,” which is a number of his own choosing, b, that he uses as an exponent. He doesn’t know n or a, but he has na, which he got from Alice, so he raises this number to the power b. He thus sends Alice the “box with the two locks”: nab. Alice’s using her own key to open her own lock means her taking the ath root of nab, which, from the simple math of exponents, they know gives her nb, which she now sends back to Bob. Using his “key,” his exponent b, Bob takes the bth root of nb, and he thus obtains the underhand number n that Alice wanted to convey to him.

    Creating stronger codes with primes

    It is workable to transmit a underhand number from Alice to Bob as I just described, and if the numbers are great enough, one would occupy a reasonable probability that the number might not live deduced by Eve. In actuality, however, modern implementations of the Diffie-Hellman key exchange use more sophisticated elements to consequence it more difficult to rupture the code. And the underhand number is not sent from Alice to Bob, but rather deduced by both of them using the formula nab (which, of course, is besides equal to  nba).

    Alice and Bob pick a prime number, which they assume can live known to Eve, or to anyone in the world. Let’s philosophize that this number is 11. They then attain sum calculations using the mathematical multiplicative group of integers modulo 11 (like a clock going around to 12 and then starting from 1, this group starts to signify again after reaching 11). They besides pick a base, and let’s suppose it is the number 5. Alice then chooses her underhand number, philosophize 3. Independently, Bob chooses his underhand number, 4.

    Alice raises the commonly-agreed-on foundation of 5 to the power of her underhand number 3, and does the calculation modulo 11. She gets:  53 = 125, but 125 modulo 11 is 4 (it’s the residuum of dividing 125 by 11, which gives 11 and a residuum of 4—it acts like 16 hours in a clock, but this clock is based on 11 rather than 12). She sends Bob the answer, the number 4. Recall that Bob had chosen a underhand number of 4, so he raises the 4 he got from Alice to the 4th power, modulo 11, and this gives him 44 = 256, but 256 modulo 11 is 3 (because 11×23 = 253, leaving the residuum 3), which is his final answer.

    Alice gets from Bob the original 5 they had both agreed on, but now raised to the power of his underhand number, 4, modulo 11, which is 625 modulo 11, which is 9 (as 11×56 = 616, leaving a residuum of 9). She then raises this number to the power of her underhand number of 3, again doing this calculation modulo 11. She gets the same number that Bob got, 3 (because 93 = 729, but modulo 11 it is 3, since 11×66 = 726, which leaves a residuum of 3).

    Using this complicated modular arithmetic based on a prime number, but essentially raising a number to hidden powers as in the previous section, Alice and Bob establish a common underhand number, in this example, 3. Modular arithmetic using prime numbers helps consequence the algorithm much more difficult to decipher by an eavesdropper.* In reality, the prime number is large, and so are the other numbers. When Alice and Bob consume underhand numbers 100 digits long, the common number jointly deduced by Alice and Bob cannot live erudite by Eve even if she has access to sum the world’s available computing power.

    Once Alice and Bob occupy established a common underhand number, they can consume it as a key to encrypt messages from one to the other and should occupy a towering probability that their communication will not live deciphered by an outsider.

    Two keys are better than one

    The year after the Diffie-Hellman algorithm was published, three academics then working at MIT—Ron Rivest, Adi Shamir, and Leonard Adelman—came up with a brilliant view for encrypting messages. What they tried to attain was to avoid the stage in which Alice and Bob must create a common underhand number, since this stage slows down the communication between them.

    The three MIT scientists developed the notion of a pair of keys: a public key and a private key, which are then jointly used for communicating underhand messages. The public key can live published and known to all. Its consume saves time. The private key is a underhand that Bob keeps, allowing him to decipher coded messages from Alice (or from anyone who knows his public key). Bob publishes his public key, which is a great number. This number is obtained when he multiplies together two very great prime numbers, known only to him (they constitute his private key). When Alice wants to transmit Bob a underhand message, she encrypts it using his known public key. But in order to decrypt the message, one would necessity to know Bob’s private key, which is the two prime numbers he had used to create his publicly-known key. Supposedly, only Bob can attain this.

    Encrypting and decrypting messages using the RSA algorithm is a complicated mathematical procedure that relies on modular arithmetic and prime numbers similarly to the artery they are used in the description of the Diffie-Hellman system above. But it is more sophisticated so that it can allow deciphering using only the private key. The public key lonesome is useless for deciphering the RSA code.

    The essential ingredient of RSA is the fact that the public key is composed of the product of two very great unknown prime numbers. It so happens that factoring a number into its prime components is very difficult when the primes are large. (35 = 7×5, a product of two primes, is easy; but 46,324,637 = 5,881 × 7,877 is harder, and primes used in RSA encryption are much larger still.) It is this fact lonesome that keeps Eve in the dark. She knows the product of the two prime numbers—but she can’t easily (and hopefully not at all) deduce what the two primes are!

    The RSA Challenge

    Right after the RSA system was invented, Martin Gardner published in Scientific American an encrypted message and a great RSA number, with 129 digits, that was the product of two primes. He challenged his readers to rupture the code, offering a $100 prize. It took 17 years for the number to live factored and the message deciphered. This was a relatively short period of time—many had expected that it would recall an exceedingly long time, and Rivest, Shamir, and Adelman had jested that it could recall several “quadrillion years.” The knotty operation was achieved using distributed computing with thousands of computers around the world performing parts of the general calculation—thus demonstrating the power of such an approach.

    RSA Security, founded by the academics, has since published several similar numbers, and for a time there was a cash prize offered for their factoring into pairs of primes, which the company subsequently withdrew. By now, some of these challenges occupy been met by mathematicians using distributed computing. Here is one problem that is silent outstanding, an RSA number with 210 digits, that has never yet been factored into two primes:

    RSA-210 = 245246644900278211976517663573088018467026787678332759743414451715061600830038587216952208399332071549103626827191679864079776723243005600592035631246561218465817904100131859299619933817012149335034875870551067

    Obviously, the larger the number to live factored, the longer the time needed to rupture it into a pair of primes. Beyond a certain length (in decimal digits), the RSA code becomes impregnable and therefore any message based on it undecipherable (in a reasonably finite length of time) by an eavesdropper. The RSA algorithm is widely used today in Internet security.

    NSA’s uses and abuses of encryption

    In adopting standards for encryption in the United States, and for exporting encryption products, the NSA has pushed for, and succeeded in implementing, legal limits on the size of the numbers used in RSA coding, so that—with its supercomputers—it would live able to decipher any message based on it. Presumably, the Europeans are not bound by these restrictions, and their cryptanalysts should occupy been able to easily devise an unbreakable RSA code (by choosing primes that are great enough) for consume in routine European diplomatic communications as well as protecting their computers from hacking.

    And as history has shown, supercomputers are less efficient than wide-ranging worldwide distributed computing for breaking advanced codes—but by its very nature, the NSA could never employ the latter. On the other hand, the most recent revelations appear to testify that one of the purposes of NSA searches is in fact to identify people or entities that consume encryption in their communications. If so, sum the more reason for the European governments to consume established, Western, advanced codes, so as to set themselves apart from terrorist entities, whose codes would necessarily see different. This would actually abet the NSA concentrate on identifying existent threats rather than wasting resources on intercepting Brussels messages such as: “Pierre, Italian or Chinese for lunch today? Yours, Hans.”

    Thus they find ourselves where they attain now, in an arms race of encryption and decryption, a world in which simple mathematics plays the key role in helping invent better and better codes. As the codes become more sophisticated, so attain the code-breakers, and the cycle perpetuates itself. What is so Amazing is that codes that were considered absolutely unbreakable a few decades ago attain become breached as the technology improves—but then again, those designing fresh encryption methods, on sum sides, consume ever more complicated math to sustain a step ahead of their pursuers.

    *There are two qualified reasons for using modular arithmetic. The first is that it acts as a many-to-one function, in the sense that many numbers, when divided by a prime, will give the same remainder—thus making Eve’s life much more complicated (she can’t uniquely reconstruct Alice and Bob’s underhand numbers). Using the clock example, if she should overhear that a meeting is to recall Place at 1 o’clock, she couldn’t narrate if it’s a.m. or p.m., or which day. The second reason is that it puts a cap on the size of numbers involved when using exponentials, since (by definition!) without modular arithmetic these numbers grow “exponentially,” and could consequence computations intractable.

    Image courtesy Maksim Kabakou / Shutterstock



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