CS155a: E-CommerceLecture 7: Sept. 27, 2001Copyright Law, DMCA, andOnline Content DistributionAcknowledgement: V. RamachandranProvision For Copyright LawU.S. Constitution:[Article I, Section 8]“The Congress shall have Power…[Clause 8] To promote the Progress of Science and useful Arts, by securing for limited Times to Authors and Inventors the exclusive Right to their respective Writings and Discoveries…”• Question: What is the ultimate purpose of copyright law?• Question: What does exclusive right mean?Limitations on Exclusive Rights(“4 factors” test for “Fair Use”: Sec. 107)• The purpose and character of the use, including whether such use is of a commercial nature or is for non-profit educational purposes• The nature of the copyright work• The amount and substantiality of the portion used in relation to the copyright work as a whole• The effect of the use upon the potential market for or value of the copyrighted work. The fact that a work is unpublished shall not itself bar a finding of fair use if such finding is made upon consideration of all the above factors.First-Sale Rule (Sec. 109)• When an owner sells a copy, he relinquishes control over that copy but not the content.• The content cannot be reproduced illegally, but the copy can be loaned, sold, or given to someone else.– Libraries– Used-book stores• This works because physical entities are exchanged. A person can’t simultaneously give away and keep the “same copy” of a book.• Question: Does this work for digital objects? (Consider the problem with software.)Copyright in the Analog World• Copyright law controls copying.– “Copying” is a sensible concept for physical objects (books, records).– Copying is relatively hard:• Copies are often not perfect;• Private copying is limited, andmass-market copying is obvious.• Copy control is an effective means to an end.• Questions: Does “copying” make sense in the digital world? Is its regulation natural?Copying in the Digital World• Copying is an integral and natural part of computer operations.• Digital objects are easy to copy.– Relatively little cost and little time involved– Copies can be of perfect quality.– A copied version can be indistinguishable and untraceable.• Questions:– Can we control digital copying?– If so, what rights does this control give authors and inventors? Are these the same exclusive rightsthat existing copyright law grants?Other Relevant Issues“ Fair Use is a Defense” ?? (Could a good TPS render it moot?)• “Private-use copying” may be harder to keep private in the digital world.• “Private-use modification” needs to be considered. For example, do Linux users have the right to view DVDs for which they have paid full price?Digital Video Disks (DVDs)• Developed by movie studios and consumer electronics companies in 1995.• Compatible with CDs. Same size and thickness as CDs. Up to 25 times the storage capacityas CDs.• TPS for DVDs includes– CSS encryption (“content scrambling system”)– R/W’able copy-control marks (e.g., “copy freely,” “one copy,” “no copies”)– Macrovision analog copy protection– Other ingredientsStudios’ OverallIP-Management Strategy• Use TPS to “keep honest people honest.”• Assume (temporarily) that lack of bandwidth will prevent large-scale Internet distribution of movies.Use courts aggressively to punish (alleged) violators of existing copyright laws and lobby heavily for new laws that favor rights holders.Digital Millennium Copyright Act (1998)• Illegal, except under narrowly defined special circumstances, to circumvent effective technological protection measures• Illegal to distribute circumvention tools• Gives content owners a property right in TPS as well as the content that the TPS protects. In SAT terms, circumvention is to infringement as breaking and entering is to burglary.Examples of Allowed Circumventions• Nonprofits may circumvent to “shop.”• Law enforcement and intelligence agencies.• Reverse engineering to achieve interoperability.• “Encryption research.” The “researcher” has to “make a good faith effort to obtain authorization.”• Protection of “personally identifying information.”Techies’ Objectionto DMCA• What is an “effective technological protection measure?”– If a skilled hacker can break it, is it “effective”?– If an average computer-literate person can break it, but few do, is it “effective?”• Weakens incentives for content owners to pay for good IP-management technology.• Shifts costs from content owners to society at large, by shifting responsibility from TPSs to courts and police.• Exceptions for R&D are vague.DMCA vs. Copyright ViolationsQuestions:• What does the DMCA actually do to existing copyright law?• What happens to fair use?• Are there differences between violations of copyright law and violations of the DMCA?DeCSS Violates DMCA• DeCSS is software that reads CSS-scrambled video from a DVD and writes unscrambled MPEG-2 video.• In effect, DeCSS circumvents the TPS for DVDs.– Question: Is CSS an effective copy-protection mechanism?DeCSS Violates DMCA(continued)• Magazine that published the DeCSSalgorithm got sued.– Question: Is this different from“a reputable journal” publishing research?• Question: Is DeCSS different from a regular DVD player?• Questions: Does DeCSS fit under any of the DMCA exceptions? Where is the copyright violation?Adobe eBook Processor Violates DMCA• Adobe established one format for electronic books: the eBook.• To use eBooks, purchase and download them, and view them using a special reader (Adobe eBook software).• The eBook format contains provisions for publisher controls on:– Text-to-speech processing– Copying to another device or making a backup– Translating between formatsAdobe eBook Processor Violates DMCA (continued)• ElcomSoft, a Russian company, created AEBPR, the eBook Processor.– AEBPR translates eBooks to Adobe PDF.– Software available for purchase on ElcomSoft’s website and through a U.S. firm, RegNow (used for handling payments).• Dimitri Sklyarov, one of the designers, presented his methods at DEF CON, a conference in the U.S.ElcomSoft’sProductWebpagehttp://www.elcomsoft.com/prs.htmlAdobe eBook Processor Violates DMCA (continued)• Sklyarov was arrested for violating the DMCA by circumventing Adobe’s protection
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