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Topic: Information hiding

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	[No title] (Site not responding. Last check: 2007-11-06)
		Information hiding is not only confused with encapsulation, it is also often confused with abstraction.
		Usually, abstraction is not defined in terms of information hiding, e.g., note the use of words such as "ignore" and "extracting." However, we should also note the use of the words "suppress" and "suppressing" in some of the above examples.
		The terms information hiding and encapsulation are usually interchangeable." -- [Booch, 1991] "The principle of information hiding is central.
	www.toa.com /pub/abstraction.txt (2677 words)

	Home Page
		Information hiding first came to public attention in a paper David Parnas wrote in 1972 called "On the Criteria to Be Used in Decomposing Systems Into Modules" (Communications of the ACM, December 1972).
		Information hiding is characterized by the idea of "secrets," design and implementation decisions that a software developer hides in one place from the rest of a program.
		Information hiding is part of the foundation of both structured design and object-oriented design.
	www.stevemcconnell.com /ieeesoftware/bp02.htm (1403 words)

	Information hiding - Wikipedia, the free encyclopedia
		In computer science, the principle of information hiding is the hiding of design decisions in a computer program that are most likely to change, thus protecting other parts of the program from change if the design decision is changed.
		The most common use of information hiding is to hide the physical storage layout for data so that if the physical storage layout is changed, the change is restricted to a small subset of the total program.
		The concept of information hiding was first documented in a paper by David Parnas, "On the Criteria to Be Used in Decomposing Systems Into Modules" published in Communications of the ACM in December, 1972.
	en.wikipedia.org /wiki/Information_hiding (927 words)

	itmWEB: Abstraction, Encapsulation, and Information Hiding
		I recently read a magazine article that said, "Encapsulation is just a fancy name for information hiding." Since the writer was non-technical, I just assumed that he was attempting to show that he really did not understand technical matters.
		"[Information hiding is] the principle that users of a software component (such as a class) need to know only the essential details of how to initialize and access the component, and do not need to know the details of the implementation."
		In truth, both of the scenarios presented by Parnas involve "information hiding." In his first scenario, the hidden information involves the details of the procedural steps necessary to accomplish the application.
	www.itmweb.com /essay550.htm (3233 words)

	Hiding Routing Information
		Although the compromise of all routing nodes compromises the hiding, one uncompromised routing node is sufficient to complicate traffic analysis.
		Although each piece of information that he retrieves is publicly known, it may be possible for an outside observer to determine his sensitive interests by studying the patterns in his requests.
		To avoid compromised nodes inferring route information from this monotonically diminishing size, a random bit string the size of the peeled off layer is appended to the end of the payload before forwarding.
	cryptome.sabotage.org /hri.htm (5669 words)

	SAP Design Guild -- The Art of Hiding - Part II
		Hiding and presenting information are closely related – they are two sides of the same medal.
		Information was typically organized on screens that were viewed in a certain order, which was either fixed or depended on the decisions of the users.
		Complex information, such as in data entry screens, was split into parts and distributed over several screens, which had to be viewed in succession.
	www.sapdesignguild.org /community/design/art_of_hiding2.asp (3418 words)

	Abstraction, Information Hiding and Encapsulation (Site not responding. Last check: 2007-11-06)
		Understand the subtle differences between the principles of abstraction, information hiding and encapsulation.
		Be able to use the principle of information hiding to find a high-quality modularization.
		The principles of abstraction, encapsulation and information hiding are well represented in these programming techniques.
	www.bit.umkc.edu /burris/pl/abstraction-info-hiding-encapsulation (1940 words)

	IH2006 - 8th Information Hiding
		The 8th Information Hiding International Conference will be held at the Holiday Inn Select in Alexandria, Virginia (minutes away from Downtown Washington, DC via metro rail) from 10 July to 12 July 2006.
		Claims about information hiding technology, such as robustness or steganographic security, must be backed by strong evidence in the paper (such as mathematical proofs, statistical modeling or extensive testing).
		The Information Hiding conference (IH2006) is a voluntary association of individuals and groups sharing common research interests.
	ih2006.jjtc.com (619 words)

	Picture this: Technology lets you hide information inside an image
		Welcome to the emerging field of "information hiding." In addition to hiding dates and locations in photographs, the technology has applications for business and national security.
		In a type of information hiding known as "steganography," secret information is hidden so that it can be passed from person to person without arousing suspicion.
		The researchers have established limits on the amount of information that can be hidden, as well as general guidelines for effectively hiding and recovering information.
	aisweb.wustl.edu /alumni/atwu.nsf/infohiding (865 words)

	Information Hiding - Dave Jarvis (Site not responding. Last check: 2007-11-06)
		To help illustrate what is meant by information hiding (also known as data encapsulation), a brief, yet horrendously bad example of an object design is shown, implemented using Java.
		The power behind information hiding lies in significantly reducing the amount of code that must change if the internal representation of a class must change to meet new requirements.
		Any time the information about the person is referenced, when the name is displayed on the screen, printed on a printer, sent over the network, used as a prompt for more information, and so forth.
	www.joot.com /dave/writings/articles/info-hiding.shtml (2897 words)

	Steganography & Digital Watermarking
		Information Hiding : Steganography and Watermarking - Attacks and Countermeasures Neil F. Johnson, et al
		Information Hiding: Steganography and Watermarking - Attacks and Countermeasures by Neil F. Johnson, Zoran Duric, Sushil Jajodia, Kluwer Academic Publishers, 2000.
		Information Hiding Techniques for Steganography and Digital Watermarking, edited by Stefan Katzenbeisser, Fabien A. Petitcolas, Artech House Books, January 2000.
	www.jjtc.com /Steganography (1048 words)

	Network Security Illustrated \| Hiding Information
		A handful of techniques for keeping critical information away from wandering eyes are available, such as cryptography and steganography.
		Hiding something very well might be better for peace of mind than it is for practical security.
		The above information is an excerpt from "Network Security Illustrated," published by McGraw-Hill and available from amazon.com, as well as your local bookstore.
	www.openlysecure.org /nsi/hiding_information.html (342 words)

	information hiding (Site not responding. Last check: 2007-11-06)
		Until the early nineties, information hiding techniques had received very much less attention from the research community and from industry than cryptography, but this has changed rapidly since.
		It was followed by several other conferences focussing on information hiding as well as watermarking.
		The fifth international workshop on information hiding was held in Noordwijkerhout in October 2002.
	www.cl.cam.ac.uk /~fapp2/steganography (242 words)

	NTI - Data Risk - Information Leakage
		The information security risk perspectives presented in course are ideal to cover issues that must be addressed as part of GLB, HIPAA, Sarbanes-Oxley and FISMA.
		In addition to the policy information provided above, this course covers known data hiding methods, e.g., steganography, it also focuses on several non-traditional data hiding methods that are effective and easy to implement.
		Our instructors participated in that conference and have participated in most of the subsequent information hiding workshops that have been held in various locations throughout the world.
	www.forensics-intl.com /datahide.html (1008 words)

	What is information hiding? - A Word Definition From the Webopedia Computer Dictionary
		Information hiding is a powerful programming technique because it reduces complexity.
		One of the chief mechanisms for hiding information is encapsulation -- combining elements to create a larger entity.
		Information hiding is also used to prevent programmers from changing --- intentionally or unintentionally -- parts of a program.
	www.webopedia.com /TERM/E/information_hiding.html (147 words)

	Encapsulation is not information hiding - Java World
		However, hiding data is not the full extent of information hiding.
		He stressed hiding "difficult design decisions or design decisions which are likely to change." Hiding information in that manner isolates clients from requiring intimate knowledge of the design to use a module, and from the effects of changing those decisions.
		In this article, I explore the distinction between encapsulation and information hiding through the development of example code.
	www.javaworld.com /javaworld/jw-05-2001/jw-0518-encapsulation.html (566 words)

	SSRN-Information Hiding in Product Development: The Design Churn Effect by Ali Yassine, Nitin Joglekar, Dan Braha, ...
		Integration is often accompanied by inadvertent information hiding due to the asynchronous information exchanges.
		We show that information hiding leads to persistent recurrence of problems (termed as the design churn effect) such that progress oscillates between being on schedule and falling behind.
		We develop a dynamic model of work transformation to derive conditions under which churn is observed as an unintended consequence of information hiding due to local and system task decomposition.
	papers.ssrn.com /abstract_id=298248 (396 words)

	5th international workshop on information hiding (ih 2002)
		Many researchers are interested in hiding information or, conversely, in preventing others from doing so.
		This fifth international workshop on information hiding will be held in the Conference Hotel Leeuwenhorst in Noordwijkerhout, Netherlands from Monday 7
		Claims about information hiding technology (and in particular ‘robustness’) must be backed by strong evidence in the paper (such as mathematical proofs, statistical modelling or extensive testing) and the authors must be prepared to publicly discuss such claims at the workshop.
	research.microsoft.com /ih2002 (351 words)

	Information hiding techniques for steganography and digital watermarking
		ntil recently, information hiding techniques received very much less attention from the research community and from industry than cryptography.
		Chapter 1: Introduction to information hiding (Fabien A. Petitcolas) gives an introduction to the field of information hiding, thereby discussing the history of steganography and watermarking and possible applications to modern communication systems.
		Chapter 3: A survey of steganographic techniques (Neil F. Johnson and Stefan Katzenbeisser) discusses several information hiding methods useable for steganographic communication, among them substitution systems, hiding methods in two-color images, transform domain techniques, statistical steganography, distortion and cover generation techniques.
	www.jjtc.com /pub/book99_ih.htm (521 words)

	Books about Information hiding (Site not responding. Last check: 2007-11-06)
		Since the mid 1990s, data hiding has been proposed as an enabling technology for securing multimedia communication, and is now used in various applications including broadcast monitoring, movie fingerprinting, steganography, video indexing and retrieval, and image authentication.
		Data hiding and cryptographic techniques are often combined to complement each other, thus triggering the development of a new research field in multimedia security.
		This journal, LNCS Transactions on Data Hiding and Multimedia Security, aims to be a forum for all researchers in these emerging fields, publishing both original and archival research results.
	www.watermarker.com /books/Information-hiding-.aspx (1262 words)

	steganography tools, hide secret in jpegs, hide information (Site not responding. Last check: 2007-11-06)
		This allows you to encrypt sensitive information, while at the same time hiding it in a file that will not look suspicious, so nobody even knows that there is any encrypted information.
		The carrier files are fully functional and identical to the original files (except for size), so if data was hidden in a picture file, the picture can still be viewed normally.
		The program gives you the option to hide a small text message, or one or more files that you select.
	www.securekit.com /hidefiles.htm (315 words)

	SAP Design Guild -- The Art of Hiding - Part I
		One hiding principle is the "one for all" principle.
		A piece of information that is too large to be displayed as a whole, such as customer data, is split into several meaningful units, called views, that are given labels.
		The second article on the "art of hiding" will present examples that demonstrate techniques, and the proper use of controls for hiding information and functionality.
	www.sapdesignguild.org /community/design/art_of_hiding1.asp (2893 words)

	Amazon.com: Disappearing Cryptography, Second Edition - Information Hiding: Steganography and Watermarking (The Morgan ... (Site not responding. Last check: 2007-11-06)
		This is a very easy read that does not really assume much about the reader other than mathematical maturity at the precalculus level, knowledge of programming in a higher level language, and a curiosity about hiding information in such things as images.
		Such a machine hides data as it "runs forward", while running the machine in reverse allows the hidden data to be recovered.
		I would say if you are interested in hiding information in data of any kind - text, sound, imagery, etc. - then this book is essential reading.
	www.amazon.com /exec/obidos/tg/detail/-/1558607692?v=glance (1824 words)

	Amazon.ca: Information Hiding: Books: Fabien A. P. Petitcolas (Site not responding. Last check: 2007-11-06)
		This book constitutes the thoroughly refereed post-proceedings of the 5th International Workshop on Information Hiding, IH 2002, held in Noordwijkerhout, The Netherlands, in October 2002.
		The 27 revised full papers presented were carefully selected during two rounds of reviewing and revision from 78 submissions.
		The papers are organized in topical sections on information hiding and networking, anonymity, fundamentals of watermarking, watermarking algorithms, attacks on watermarking algorithms, steganography algorithms, steganalysis, and hiding information in unusual content.
	www.amazon.ca /Information-Hiding-Fabien-P-Petitcolas/dp/3540004211 (208 words)

	Information Hiding Workshop (Site not responding. Last check: 2007-11-06)
		An international workshop on Information Hiding held in 1996 at the Isaac Newton Institute in Cambridge (Springer LNCS 1174) brought together these closely linked areas of study.
		The workshop proved to be a success, and the research community followed it up with a second one in 1998 in Portland (Springer LNCS 1525) and a third one in 1999 in Dresden (Springer LNCS 1768).
		Claims about information hiding technology must be backed by evidence in the paper and the authors must be prepared to publicly discuss such claims at the workshop.
	www.cs.utah.edu /flux/cipher/cfps/cfp-WOIH-4.html (307 words)

	Information Hiding Techniques for Steganography and Digital Watermarking - Stefan Katzenbeisser - Fabien A. P. ... (Site not responding. Last check: 2007-11-06)
		communication, and watermarking, a means of hiding copyright data in images, are becoming necessary components of commercial multimedia applications that are subject to illegal use.
		Gain an understanding of steganography, the history of this previously neglected element of cryptography, the hurdles of international law on strong cryptographic techniques, and a description of methods you can use to hide information in modern media with this resource.
		The information you provide for eBook orders is only used to complete your order and for communication regarding your order.
	www.ebookmall.com /ebook/118724-ebook.htm (807 words)

	Workshop on Information Hiding (Site not responding. Last check: 2007-11-06)
		Many researchers are interested in hiding information or in stopping other people doing this.
		This was felt to be very worthwhile by the research community, and it was decided to hold a second workshop in 1998.
		This second international workshop on information hiding will be held in Portland, Oregon from the 15th to the 17th April 1998.
	www.cl.cam.ac.uk /~rja14/ihws.html (309 words)

	Information Hiding
		The information to be hidden (watermark, fingerprint, a secret message) is embedded in a cover object (cd, video, text) giving stego object (marked object).
		The embedding is done with a key, a secret variable that is in general known to the object's owner.
		The marking information should be recoverable after a wide range of filtering and processing operations (D/A and A/D conversion, MPEG compression, adding a second mark with the same system, etc.)
	www.sm.luth.se /csee/courses/smd/102/2000/lek12/all.html (1136 words)

	Information Hiding (Site not responding. Last check: 2007-11-06)
		Encapsulation, strictly speaking, means something different; it means collecting a bunch of stuff together and putting it in one box, or capsule.
		The box may or may not have opaque walls, so this may or may not involve information hiding.
		In practice a "class" will both encapsulate (ie bundle code and data together) and hide information (namely, implementation detail), and some people get so used to doing both at once they no longer bother to distinguish.
	c2.com /cgi/wiki?InformationHiding (197 words)

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