Digital Rights Management in eBooks
Dr. ChennupatiK. Ramaiah
Dean, School of Media and Communication &
Professor, Dept. of Library and Information Science,
Pondicherry University, R.V. Nagar, Kalapet,
PUDUCHERRY –605 014. Email: ckramaiah@gmail.com
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What is Digital Rights Management?
• DRM involves rights embedding, identification, and rights 
validation of digital content among digital publishing, 
distribution, and consumption. 
• It protects digital content against illegal uses and piracy 
copies over the Internet in digital industry.
• A well-designed DRM system can assist the enforcement of 
DRM for digital content as well. 
• DRM is one of the content access control mechanisms also 
functioning as a method to monetisethe use of digital 
content.
• The management of secure exchange of digital content, or in 
more specific terms intellectual property, such as music, 
video or text and even medical or financial records across 
different digital channels.
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Genesis to DRM is Piracy
• eBooks suffers greatly from piracy. 
• This burden of piracy is passed on to paying consumer: inflated prices and restricted rights 
through the use DRM.
• So publishers tried to find a more active method of cutting piracy through DRM.
• DRM gives publishers more control over what users are able to do with eBooks. 
• Current standard formats did not include the DRM, forcing the publishers to rely on 
proprietary eBook formats. 
• None of the formats works on all devices and Oss.. 
• Publishers are forced to incur higher cost to publish in multiple format or risk losing 
potential customers. 
• In addition, consumers often have to toread their eBooks on multiple eBook readers. 
• Such a system is causing much confusion for consumers. 
• OpenReaderConsortium is working on a non-proprietary, well-developed, open-source 
standard that will work on all platforms.
• Single standard eBook format is not yet a reality.
• DRM itself seem to presents a problem with consumers. 
• So what needs to be in place is a secure, but somewhat open system that would protect 
the publisher copyright and investment yet give consumers more rights to their purchased 
eBook to help drop the price of eBooks and to gather more consumers into the market. 
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DRM Goals
• The DRM systems must have goals in order to give a trusted 
platform for users. 
• These goals should be advantageous to content providers, who 
have to trust the system and get assurances that they will be 
properly compensated if they release content into the market. 
• DRM systems should also assure the authenticity of every content 
they provide the customers with. DRM will enable a robust digital 
content e-commerce by accomplishing the following goals:
1. DRM should provide protection of digital content.
2. DRM should enable secure distribution
3. DRM should ensure content authenticity
4. DRM should provide for transaction non-repudiation.
5. DRM should support participant identification
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Multiple DRM Perspectives
• Authors and publishers should not expect DRM technology, or DRM 
technical standards, to secure ebookcontent absolutely. 
• To optimize protection, publishers should look at DRM from a 
perspective broader than just technology.
• The Open eBook Forum, a leading ebookstandards 
organization, suggests three perspectives: technical, social 
and legal.
1. The technical perspective involves rights specification language, 
electronic package controls and trust infrastructure. 
2. The social perspective involves expectations, mores and education. 
3. The legal perspective involves legislation, compliance, investigation 
and enforcement.  
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1. Technical DRM Perspective
• It includes hardware and software used to protected digital content. 
• It involves a number of elements used in combination to secure content. 
• Most are based on the mathematics of cryptography. These include:
• Encryption
• Public / private keys
– Digital certificates
– Watermarks
– Access control
• Authentication
• Secure communications protocols
– Secure content storage
– Rights specification language
– Trust infrastructure
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Practice and study of techniques for secure communication
Protects from third parties secretly listening to private conversations 
(eavesdropper)
Information is Encrypted and then Decrypted once securely transmitted
Cryptography
Securely transmit a message/data from one 
party to another
Authentication
o
The receiver must identify themselves correctly in order to start 
receiving the message or data
Privacy/Confidentiality
o
The original data is only ever seen by the sender or the receiver
Integrity
o
Received Message = Sent Message
o
Capability to check who sent the data
Purpose of Cryptography
1. Secret Key (Symmetric) -single key for
both encryption and decryption
2. Public Key (Asymmetric) -one key for encryption and 
another for decryption
3. Hash Function (One Way) -no key 
Types of Cryptography
An access control technology using cryptography
Allows copyright holders to limit
o
Expiration time of data
o
Number of devices data can be used on -
o
Usage access
DRM & Cryptography
Simply a way of applying cryptography to media for usage rights and 
protection
Works mainly using the public key cryptography technique discussed 
earlier
The algorithms used for the encryption must be fast and responsive for 
the consumers
Digital Rights Management (DRM)
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