10-08-2011, 03:54 PM
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Abstract
The electronic commerce with digital content over the open, unsecured network like the Internet provides opportunities as well as risks for content providers. So far, most content providers of media and entertainment content such as music, film, or print content have not been successful or profitable in charging consumers for their products. Nor have they been successful in creating the technology frameworks required to remunerate on the one-hand content owners and on the other hand protect against piracy. The recent emergence of Digital Rights Management Systems (DRMS) provides an instrument for content providers to protect and exploit their digital content to consumers and simultaneously fight against piracy.
1. Introduction of DRM
Definition: DRM is the technology to protect rights of digital contents to prohibits illegal copy and ill contents and to let only authorized users use the contents.
Digital Rights Management (DRM) is an emerging and vital business concept driven by the need for secure electronic distribution of high-value digital content. In its purest form, DRM provides a technology platform to allow trusted packaging, flexible distribution and managed consumption of digital content over electronic networks.
DRM technology provides content owners, service providers, distributors and retailers with a safe, secure method for meeting the consumer’s need for interactive, on-demand access to movies, online games, books, music, software and proprietary data — virtually any type of digital media.
Digital Rights Management poses one of the greatest challenges for content communities in this digital age. Traditional rights management of physical materials benefited from the materials' physicality as this provided some barrier to unauthorized exploitation of content. However, today we already see serious breaches of copyright law because of the ease with which digital files can be copied and transmitted.
Previously, Digital Rights Management (DRM) focused on security and encryption as a means of solving the issue of unauthorized copying, that is, lock the content and limit its distribution to only those who pay. This was the first-generation of DRM, and it represented a substantial narrowing of the real and broader capabilities of DRM. The second-generation of DRM covers the description, identification, trading, protection, monitoring and tracking of all forms of rights usages over both tangible and intangible assets including management of rights holders relationships. Additionally, it is important to note that DRM is the "digital management of rights" and not the "management of digital rights". That is, DRM manages all rights, not only the rights applicable to permissions over digital content.
1.1 The Need for DRM — Supply and Demand:
The supply of high-value content — video, audio, text and images — generated by media and entertainment companies, publishers and commercial enterprises continues to grow. With the advent of the World Wide Web, high-speed computing and broadband connectivity, traditional methods of media distribution and consumption are being complemented by Internet-based access and streaming or downloading to a wide range of personal digital devices. This “supply and demand” paradigm shift creates a new spectrum of business opportunities and revenue streams. First, however, content security must be insured. Digital media can be easily copied or distributed without authorization, thus violating copyrights and jeopardizing revenues. Without a secure solution, content owners are unlikely to authorize the transmission of their premium content, thereby limiting growth in the digital marketplace. The need for a safe and secure method for accessing, distributing and merchandising digital content is in evidence throughout the commercial value chain.
An effective DRM method would have far-reaching implications. An individual could maintain control over online personal data. Online privacy can be maintained or survive only if DRM succeeds. DRM solution can provide unbreakable protection from unauthorized use.
The DRM should employ strong encryption in order to eliminate possibility that an attacker can remove the protection without first recovering the key. But encryption alone is not sufficient to provide constant protection. At a minimum, the encryption key must be protected, which present a tremendous challenge on an open architecture. As an attacker can remove a crypto key by reverse engineering the software that contains the key, the reverse engineering problem in a DRM system should be very difficult.
1.2 Early System:
An early example of a DRM system is the Content Scrambling System (CSS)employed by the DVD Consortium on movie DVD disks. The data on the DVD is encrypted so that it can only be decoded and viewed using an encryption key, which the DVD Consortium kept secret. In order to gain access to the key, a DVD player manufacturer would have to sign a licence agreement with the DVD Consortium which restricted them from ncluding certain features in their players such as a digital output which could be used to extract a high-quality digital copy of the movie. Since the only hardware capable of decoding the movie was controlled by the DVD Consortium in this way, they were able to impose whatever restrictions they chose on the playback of such movies.
Abstract
The electronic commerce with digital content over the open, unsecured network like the Internet provides opportunities as well as risks for content providers. So far, most content providers of media and entertainment content such as music, film, or print content have not been successful or profitable in charging consumers for their products. Nor have they been successful in creating the technology frameworks required to remunerate on the one-hand content owners and on the other hand protect against piracy. The recent emergence of Digital Rights Management Systems (DRMS) provides an instrument for content providers to protect and exploit their digital content to consumers and simultaneously fight against piracy.
1. Introduction of DRM
Definition: DRM is the technology to protect rights of digital contents to prohibits illegal copy and ill contents and to let only authorized users use the contents.
Digital Rights Management (DRM) is an emerging and vital business concept driven by the need for secure electronic distribution of high-value digital content. In its purest form, DRM provides a technology platform to allow trusted packaging, flexible distribution and managed consumption of digital content over electronic networks.
DRM technology provides content owners, service providers, distributors and retailers with a safe, secure method for meeting the consumer’s need for interactive, on-demand access to movies, online games, books, music, software and proprietary data — virtually any type of digital media.
Digital Rights Management poses one of the greatest challenges for content communities in this digital age. Traditional rights management of physical materials benefited from the materials' physicality as this provided some barrier to unauthorized exploitation of content. However, today we already see serious breaches of copyright law because of the ease with which digital files can be copied and transmitted.
Previously, Digital Rights Management (DRM) focused on security and encryption as a means of solving the issue of unauthorized copying, that is, lock the content and limit its distribution to only those who pay. This was the first-generation of DRM, and it represented a substantial narrowing of the real and broader capabilities of DRM. The second-generation of DRM covers the description, identification, trading, protection, monitoring and tracking of all forms of rights usages over both tangible and intangible assets including management of rights holders relationships. Additionally, it is important to note that DRM is the "digital management of rights" and not the "management of digital rights". That is, DRM manages all rights, not only the rights applicable to permissions over digital content.
1.1 The Need for DRM — Supply and Demand:
The supply of high-value content — video, audio, text and images — generated by media and entertainment companies, publishers and commercial enterprises continues to grow. With the advent of the World Wide Web, high-speed computing and broadband connectivity, traditional methods of media distribution and consumption are being complemented by Internet-based access and streaming or downloading to a wide range of personal digital devices. This “supply and demand” paradigm shift creates a new spectrum of business opportunities and revenue streams. First, however, content security must be insured. Digital media can be easily copied or distributed without authorization, thus violating copyrights and jeopardizing revenues. Without a secure solution, content owners are unlikely to authorize the transmission of their premium content, thereby limiting growth in the digital marketplace. The need for a safe and secure method for accessing, distributing and merchandising digital content is in evidence throughout the commercial value chain.
An effective DRM method would have far-reaching implications. An individual could maintain control over online personal data. Online privacy can be maintained or survive only if DRM succeeds. DRM solution can provide unbreakable protection from unauthorized use.
The DRM should employ strong encryption in order to eliminate possibility that an attacker can remove the protection without first recovering the key. But encryption alone is not sufficient to provide constant protection. At a minimum, the encryption key must be protected, which present a tremendous challenge on an open architecture. As an attacker can remove a crypto key by reverse engineering the software that contains the key, the reverse engineering problem in a DRM system should be very difficult.
1.2 Early System:
An early example of a DRM system is the Content Scrambling System (CSS)employed by the DVD Consortium on movie DVD disks. The data on the DVD is encrypted so that it can only be decoded and viewed using an encryption key, which the DVD Consortium kept secret. In order to gain access to the key, a DVD player manufacturer would have to sign a licence agreement with the DVD Consortium which restricted them from ncluding certain features in their players such as a digital output which could be used to extract a high-quality digital copy of the movie. Since the only hardware capable of decoding the movie was controlled by the DVD Consortium in this way, they were able to impose whatever restrictions they chose on the playback of such movies.
