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Topic: Content Protection for Recordable Media

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	Content Protection for Recordable Media - Wikipedia, the free encyclopedia
		Content Protection for Recordable Media and Pre-Recorded Media (CPRM / CPPM) is a mechanism for controlling the copying, moving and deletion of digital media on a host device, such as a personal computer, or other digital player.
		A controversial proposal to embed CPRM in ATA hard drives was abandoned due to popular outcry in 2001.
		However, as of 2004, CPRM is widely deployed in the popular Secure Digital Card consumer-electronics Flash memory format with no apparent notice from electronic personal-rights advocates.
	en.wikipedia.org /wiki/Content_Protection_for_Recordable_Media (282 words)

	美国专利申请公开说明书 20040156503 - Content guard system for copy protection of recordable media (Site not responding. Last check: 2007-10-14)
		A content key is derived by combining a media key, derived from the media key block, with the media identification.
		The modified exchange key is then encrypted using the content key to render an encrypted modified exchange key, and the encrypted modified exchange key is then hashed with a nonce to render a bus content key.
		The bus content key is then used to encrypt the data for copying the data to a disk.
	cxp.paterra.com /uspregrant20040156503cn.html (221 words)

	Everything you ever wanted to know about CPRM, but ZDNet wouldn't tell you… \| The Register
		CPRM or Content Protection for Recordable Media is a mechanism for controlling the copying, moving and deletion of digital media on a host device, such as a personal computer, or other digital player.
		Some may redress this and include CPRM in their free software distributions, but in doing so, forever cede control of the content and information to the entertainment and media industries, argues Stallman.
		CPRM is sponsored by the distributors of entertainment media, not the people who create it, and we're yet to find an author or artist who approves of the mechanism.
	www.theregister.co.uk /content/2/15718.html (1659 words)

	Content Protection for Recordable Media
		The Content Protection for Recordable Media Specification is a set of standards brought on by a group of technology companies to protect content recorded on a number of physical media types.
		CPRM is an integral part of an overall system for protecting content against unauthorized copying, known as the Content Protection System Architecture.
		Content stored on the media is encrypted/decrypted by a Content Key derived from a one-way function of a secret Title Key and the copy control information (CCI) associated with the content.
	www.cas.mcmaster.ca /~wmfarmer/SE-4C03-02/projects/student_work/Project/liangt.html (650 words)

	FNF: CONTENT PROTECTION FOR RECORDABLE MEDIA (CPRM) 2001-02-01
		CPRM would prevent copyrighted content from being copied to storage devices.
		Opponents of the coalition's proposal say it would greatly restrict individual users' access to content and could soon lead to the end of free Internet content.
		Coalition officials explain that CPRM is meant for removable storage media, not PCs and hard drives.
	www.hi.is /~joner/eaps/wh_cprm.htm (115 words)

	CyberLink PowerDVD Ups Protection of Recordable Media
		Content Protection for Recordable Media (CPRM) is a hardware technology designed to enforce ''copy-once only'' restrictions.
		Until now, discs recorded to the CPRM standard could only be played on the original consumer DVD recorder (standalone DVD player) used to create the disc, and were not able to be played on a PC.
		Issuers of news releases and not PR Newswire are solely responsible for the accuracy of the content.
	www.prnewswire.com /cgi-bin/stories.pl?ACCT=104&STORY=/www/story/01-12-2004/0002087416&EDATE= (418 words)

	ExtremeTech: Digital Content Protection, Part III
		CPRM: Writable DVD drives are prevented from indiscriminately copying protected content by the Content Protection for Recordable Media (CPRM) system.
		Compatible downstream recorders must be able to detect and enforce the usage rules contained in a watermark embedded into an analog signal, or specified by digital CMI transmitted with encrypted digital content.
		Creating such a recording does not require compliant devices to check or update digital or watermark CCI, and can be done regardless of any restrictions on copying protected content.
	www.findarticles.com /p/articles/mi_zdext/is_200308/ai_ziff55584 (1376 words)

	DVD FAQ (Site not responding. Last check: 2007-10-14)
		The media key block data is logically ordered in rows and columns that are used during the authentication process to generate a decryption key from a specific set of player keys (device keys).
		CPRM is a mechanism that ties a recording to the media on which it is recorded.
		When protected content is recorded onto the disc, it can be encrypted with a 56-bit C2 (Cryptomeria) cipher derived from the media ID. During playback, the ID is read from the BCA and used to generate a key to decrypt the contents of the disc.
	dvddemystified.com /dvdfaq.html (17902 words)

	Press Archive
		CPRM is an extremely hot topic in Japan, as awareness grows for protection of digital television (TV) content in the lead up to the complete introduction of digital terrestrial broadcasting by 2011.
		Content Protection for Recordable Media (CPRM) is a content protection standard developed by the 4C (IBM, Panasonic, Intel, Toshiba) group and is designed to prevent unauthorized copying of content and distribution via portable storage media such as DVDs and flash media storage.
		Until now, discs recorded in compliance with the CPRM standard could only be played on the original consumer DVD recorder (standalone DVD player) used to create the disc, and were not able to be played on a PC.
	www.gocyberlink.com /eng/press_room/press_view.jsp?id=618 (903 words)

	IBM Research \| Israel \| Seminars \| Trace-and-Revoke algorithms for Content Protection (Site not responding. Last check: 2007-10-14)
		CPRM (Content Protection for Recordable Media) is a copy protection technology owned and licensed by the 4C Entity, which is made up of four companies: IBM, Intel, Matsushita and Toshiba.
		CPRM is based on a key-management paradigm called "broadcast-encryption".
		CPRM is developed by the Content Protection group at IBM Almaden.
	domino.research.ibm.com /comm/wwwr_seminar.nsf/pages/sem_abstract_184.html (303 words)

	Global Music Resource - Digital Rights Management and Content Protection (Site not responding. Last check: 2007-10-14)
		Various content providers are joining together to use this platform to provide digital commerce services parallel with the offering of digital audio to the public.
		Content Protection for Recordable Media (CPRM) is an SDMI compliant copy protection hardware standard for CD, Zip drives and flash memory cards, developed by Toshiba, Matsushita, Intel and IBM (4C Group).
		If the target storage media is of a fixed size MB, and there are a fixed number of files to be transferred to the target storage, Fit-to-Media will encode/compress the files to the correct bit-rate (kbps) so that all the files can be acommodated by the storage media.
	www.globalmusicresource.com /legal/legal5.html (3933 words)

	Digital Copyright Terminology
		This is the model that the content industry would like to see adopted worldwide, and the model that they claim has to be implemented in order to ratify the WIPO Copyright Treaty.
		Essentially, the recording industry managed to convince the government that they should be compensated for any unauthorized copying of their copyrighted material that goes on within the privacy of people's homes.
		This word has been used to describe the government's attitude towards the Content Industry, in that legislation is continually changing to protect their current revenue stream, even when the evidence indicates that it is no longer appropriate.
	www.digital-copyright.ca /copyright_jargon.shtml (4465 words)

	eSpectra Featured News (Site not responding. Last check: 2007-10-14)
		If CPRM is ultimately installed on desktop computers, the technology could restrict users from making copies of their own files, activists say.
		CPRM's creators, which include Intel, IBM, Matsushita, and Toshiba, say the technology will not be installed on desktop computers, which is a problem in itself because users could still make illegal copies of music files on their PCs.
		CPRM is designed to install a serial number in disk drives and flash memory.
	www.mcn.edu /espectra/02_2001.html (5121 words)

	Stealth plan puts copy protection into every hard drive \| The Register
		The proposals are already at an advanced stage: three drafts have already been discussed for incorporating CPRM (Content Protection for Recordable Media) into the ATA specification by the NCTIS T.13 committee.
		If, as expected, the CPRM extensions become part of the ATA specification, copyright protection will be in every industry-standard hard disk by next summer, according to IBM.
		Although it hardly has a prominent media profile - yet - CPRM in hardware is the most comprehensive mechanism for enforcing rights protection the industry has seen, and is likely to be viewed by content producers as a magic bullet.
	www.theregister.co.uk /content/2/15620.html (1026 words)

	What's Wrong With Content Protection (Site not responding. Last check: 2007-10-14)
		Even when recording your own brand-new original audio, the default settings for analog recordings are that they can never be copied, nor ever copied in higher fidelity than CD's, and that only one copy can be made even if copying is ever authorized (if the other restrictions are somehow bypassed).
		The CPRM specification, for example, allows a distributor of a bag of bits (who has access to software with this capability) to decide that future recipients will not be permitted to make copies of that bag of bits.
		Copy protection pretends that the law and some fancy footwork with industrial cartels can maintain our current economic structures, in the face of a hurricane of positive technological change that is picking them up and sending them whirling like so many autumn leaves.
	cryptome.org /jg-wwwcp.htm (3138 words)

	MAM-E DVD-R: Copy Protection - Manufacturing Advanced Media Europe - MAM-E Blank Media - CD-R and DVD-R Manufacturer (Site not responding. Last check: 2007-10-14)
		There are various copy protection systems and programmes to prevent illegal copying of DVD video and audio content.
		Content Scrambling System (CSS) is a form of data encryption, developed under the auspices of the multi-industry Copy Protection Technical Working Group (CPTWG) and now administred by the DVD Copy Control Association.
		Content Scrambling System 2 (CSS2) is focusing on DVD-Audio copy protection (Due to security concerns expressed by the recording industry, among others, as a result of the recent "hack" of the CSS video technology, the DVD CCA has withdraw the CSS2 technology from consideration for use with DVD Audio products.
	corporate.mam-e.com /web/dvd_protec.htm (315 words)

	Rewritable DVD Essentials (Site not responding. Last check: 2007-10-14)
		The digital contents can be encrypted and recorded once to a writable DVD disc.
		CPRM is an option found only in some consumer electronics (CE) DVD recorders that write DVD-RW and DVD-RAM discs using the DVD Video Recording format (DVD-VR).
		This is accomplished by binding the content to the particular disc through encryption employing a binary code (media identifier) unique to each writable disc compliant with the CPRM system.
	www.dvd-replica.com /DVD/dvdr-22.php (227 words)

	Geek.com Geek News - Copy-protected hard drives
		Content Protection for Recordable Media (CPRM) may be added into the ATA specification for hard drives by the NCTIS (National Committee for Information Technology Standards) in February.
		CPRM is already in use on DVD and SD (secure digital) removable media, and an extension of that tech is what would be used on ATA devices like hard drives and ATAPI devices like CD-ROM/DVD and other removable media drives.
		Because CPRM involves using special identifying codes on specific physical locations of the hard drive, software designed for use on non-CPRM drives won't necessarily work correctly when files are moved, and moving files at all from a CPRM-compliant device to an older device (or vice versa) will cause trouble as well.
	www.geek.com /news/geeknews/2000dec/gee20001226003506.htm (2606 words)

	Crypto-Gram: February 15, 2001
		CPRM (Content Protection for Recordable Media) is a system for enforcing copy protection on personal computers.
		If this copy protection is brought forward to the video monitor, or the speakers, then the document never exists in the computer in unencrypted form.
		Content providers are no longer relying on technology to enforce copy protection, they're relying on laws.
	www.counterpane.com /crypto-gram-0102.html (6174 words)

	Who's in Charge Here? - Protecting rich media content on the Internet (Site not responding. Last check: 2007-10-14)
		A new scheme for protecting rich media content on the Internet, dubbed Content Protection for Recordable Media (CPRM), could give technology companies the upper hand in deciding which songs and videos can be downloaded free on the Net.
		CPRM is a standard developed in a group effort by IBM, Intel, Matsushita, and Toshiba.
		The new standard is designed to incorporate content protection technology with storage media (such as hard drives) and devices (such as audio players).
	www.pcmag.com /article2/0,1759,30346,00.asp (294 words)

	Understanding DVD - Copying Deterrents and Content Protection
		Critical information (decryption keys, album identifiers) required to unlock content is located in protected regions of these discs (Control Data Zone of Lead-in Area and sector headers) accessible to the player or drive and under only carefully regulated circumstances.
		And even if a disc lacks content protection it does not mean that copying is permitted.
		This is accomplished by binding the content to the particular disc through encryption employing, among other things, a code (media identifier) unique to each writable disc compliant with the CPRM system.
	www.osta.org /technology/dvdqa/dvdqa7.htm (846 words)

	Definition of Digital rights management
		The actual arrangements are called technical protection measures (although the distinction between the two terms is not particularly clear).
		In contrast, because the "rights" that the content owner chooses to grant are not necessarily the same as the actual legal rights of the content consumer, DRM opponents maintain the phrase "digital rights management" is a misnomer, and that "digital restrictions management" is a more accurate characterization of the functionality of DRM systems.
		Examples include hardware dongles that had to be attached to the computer prior to using the content, and USB and smart card devices working in a similar fashion.
	www.wordiq.com /definition/Digital_rights_management (3302 words)

	Content Protection for Removable Media - a Whatis.com definition - see also: CPRM (Site not responding. Last check: 2007-10-14)
		Content Protection for Removable Media (CPRM) is a hardware-based technology designed to enforce copy protection restrictions through built-in mechanisms in storage media that would prevent unauthorized file copying.
		Based on a technology called broadcast encryption that was developed by Amos Fiat and Moni Naar in 1993, the CPRM system would be used to incorporate digital tags into storage media, such as recordable CDs (CD-R, CD-RW) and flash memory cards for MP3 players.
		CPRM was developed by 4C Entity, an industry consortium originally made up of Intel, IBM, Matsushita, and Toshiba.
	searchstorage.techtarget.com /sDefinition/0,,sid5_gci539236,00.html (208 words)

	Re: fyi: Content Protection for Recordable Media -- Jeffrey B.
		Re: fyi: Content Protection for Recordable Media -- Jeffrey B. cryptography
		CPRM strength is portability and interchangeability and >>it is mismatch for fixed hard drive.
		The basic scheme is to build a system where everything in it is covered by intellectual property law (patents), so legal users can be bound by license agreement to implement things a certain way, and not implement other things.
	www.mail-archive.com /cryptography@wasabisystems.com/msg00032.html (300 words)

	New technology to help squelch music piracy - ZDNet UK News
		Thus, someone trying to copy a protected music file from his or her hard drive onto a Zip drive that contained the technology would be blocked from doing so.
		IBM researcher Jeffery Lotspiech, who developed much of the CPRM specifications, says his company is interested in using it for its Microdrive portable device storage drives, and that SanDisk has expressed some interest in using it for its Flash memory, found in such products as MP3 players and digital cameras.
		Analysts said the CPRM plan and others like it could be an important brick in the technology industry's antipiracy foundation.
	news.zdnet.co.uk /hardware/emergingtech/0,39020357,2083384,00.htm (1048 words)

	CyberLink PowerDVD ups protection of recordable media - CD Freaks.com
		So, i have vcr's with my tv shows in it that i record almost every day (they are local tv shows here in Brazil and there is nothing to do with big media corps american tv shows).
		I could have problems to if one friend of mine take their already dvd recorded tv content in my home to give to me some tv shows i like (and don't have) to add to my collection.
		So, i have to record to some dvd-rw (from the hdd/dvd vcr) and put on my PC, open some especific program and EDIT it to cut/past ONLY the frames/seconds i want to a secundary video file, making my edited version of the event.
	www.cdfreaks.com /news/8873 (1534 words)

	CPRM: The End of Digital Media Piracy?
		But if 4C Entity's Content Protection for Recordable Media (CPRM) specification is adopted, that figure will drop dramatically.
		To accomplish this feat, a key block (read-only data) is written to the media at the time of manufacture.
		If adopted, CPRM will be an optional feature set of the ATA specification, which means even though vendors might comply with the specification, they won't have to activate it as a feature of their software.
	www.winntmag.com /Article/ArticleID/16482/16482.html (627 words)

	Toshiba to Commercialize DVD-R Medium with CPRM that Allows Users to Record Copy-Once Content
		Digital broadcasting in Japan, including the terrestrial broadcasts that began in December 2003, BS, CS110 and "SKY Perfect TV!" digital broadcasts, increasingly use CPRM to protect content.
		CPRM scrambles broadcast programs and allows copy-once recording only to DVD-R or RW discs formatted for Video Recording (VR).
		In addition to recording copy-once content, the DVD-VR format allows recording of bilingual sound tracks for recorded programs, when available, for both analog and digital broadcasts, a capability not supported by conventional recording to DVD-R. Before a recording is finalized, users are also free to write data to the disc management area.
	www.japancorp.net /Article.Asp?Art_ID=8447 (369 words)

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