No passwords or login information for users to enter, forget or share, or for you to manage and distribute.
Keys to decrypt ebooks are automatically and transparently securely transferred to authorized devices and locked to them.
When it comes to protecting your ebooks from piracy or theft, ebook DRM or e-book Digital Rights Management, is probably one of the things you will first think of.
DRM is the only effective security to stop ebook copying and unuathorized distribution, but most systems are poorly implemented.
Many publishing platforms (Amazon Kindle Ebooks, Google Play Books, and Kobo) rely on the DRM supported by Adobe Digital Editions (ebook reader software that uses Adobe Content Server for protection) but that has significant flaws. The main one being that the ebook protection can be easily removed.
Here we discuss the most popular ebook formats (epub & PDF), ebook DRM protection methods (Adobe DRM and PDF DRM), and alternatives to DRM, and explain which is best.
Kindle readers support five different file formats: MOBI, KFX, AZW, EPUB and PDF. The MOBI, AZW and KFX formats use Amazon’s DRM where EPUB and PDF ebooks are protected using Adobe DRM (Adobe ADEPT / Adobe Content Server). Google Play uses Adobe DRM.
However, all of these DRM protection schemes are really easy to remove:
So you may wonder what protection your ebooks are actually getting against piracy and theft if the security can be easily removed?
If you trust users not to use ebook DRM removal tools then you might equally trust them not to share your ebooks with others and therefore have no need to implement DRM security to begin with.
Read How to protect ebooks from sharing and copying to see how easy it is to remove Adobe DRM and other ebook DRM formats.
An alternative to using the above platforms for ebook distribution and protection, is using software to generate an HTML5 ebook that can be viewed in the browser.
There are many tools available to remove ebook DRM from MOBI, KFX, AZW, EPUB and PDF files. The most popular are:
You might ask why are these ebook DRM applications so successful? And that is because the DRM security has been implemented as an afterthought (and usually rather badly) enabling applications to either plugin to (to access the content as it is decrypted or intercept the decryption keys) or pickup unprotected content that has been directly cached to disk. This is nothing new – Elcomsoft pointed out the issues with Adobe PDF DRM and other ebook protection methods back in 2000 – 20 years on and nothing has changed. See PDF Security issues and weak ebook DRM implementations for further information.
Adobe’s standard security handler uses RC4 stream cipher encrypting file content with an unique encryption key. The encryption key is encrypted and stored in the PDF file’s encryption dictionary. Either the user password or owner password can recover the encryption key and decrypt the file content. Removing PDF Passwords covers this subject in more detail.
In 2009 Adobe Digital Editions DRM was broken by i♥cabbages allowing users to remove the DRM protection from Adobe ebooks. They commented “There is very little obfuscation in how Adobe Digital Editions hides and encrypts the per-user RSA key, allowing fairly simple duplication of exactly the same process Digital Editions uses to retrieve it”. 5 years later, in 2014, Adobe released Adobe Content Server 5 which in their own words “A more secure Digital Rights Management scheme to protect EPUB and PDF files from unauthorized viewing. The new hardened DRM solution uses multiple encryption layers with Adobe Licensing server having the control to change the mechanism of encrypted key generation.” Yet the ebook DRM removal products still claim to remove it proving that it does not matter how many layers of encryption you have, it is how you implement the security that really matters.
Publishers who implemented the latest edition were also in for a shock. Customers reported losing e-books from their libraries after having upgraded to the latest version of Adobe Digital Editions. Access being denied to PDF documents and ebooks after an Adobe update is not new. Companies that have implemented the Acrobat PDF DRM plugin have also had furious customers unable to access protected PDF files since every time Acrobat is updated the PDF DRM plugin no longer works.
PDF is still the most common format for document distribution since it produces reliable results across all platforms. Adobe PDF DRM however is flawed and can be easily removed (just like Adobe PDF password protection and PDF permissions or restrictions).
If you are serious about protecting PDF ebooks from piracy and theft and are happy to provide your own means of distribution (rather than using an ebook publishing platform) then using ebook DRM that does not rely on Adobe (or a third party DRM plugin to Acrobat since they also rely on the Adobe Security Handler) is clearly the way forwards.
Adobe DRM might be the industry standard but any solution that can be instantly removed is not worth implementing to begin with. And that is before you even consider the costs involved:
Some companies say that DRM that completely secures content must be cumbersome or difficult to use, and that Adobe DRM strikes the perfect balance between ease of use and security.
Let’s be clear, if the security can be easily removed it is not effective and you are wasting your money. And an ebook DRM or PDF DRM system can be secure yet easy to use.
Locklizard ebook DRM protects PDF files using strong encryption and DRM controls to ensure your ebooks are protected against simple DRM removal applications. Our DRM protects ebooks in PDF format from piracy, copying and sharing.
We stop printing to PDF, stop screen grabbers and lock ebooks to devices so they cannot be shared. If you don’t want users to have to install a Viewer then you can distribute your secure ebooks on a USB stick that includes the Viewer software. Users can then open protected PDFs directly from USB without installing any software. You can publish whole ebook libraries on USB sticks and then later grant access to individual books. User can also add new ebooks as you publish them and you can grant access accordingly.
Locklizard ebook DRM enables you to sell ebooks securely without insecure passwords or plug-ins, and enforce access, location, expiry, and usage controls. Our DRM technology ensures your ebooks remain safe no matter where they reside with US Gov Strength encryption, licensing, and DRM controls. Ebook content is decrypted in memory and no temporary files are used.
Why Locklizard for Ebook DRM (e-book Digital Rights Management)?
Is DRM best for ebooks?
Unlike encryption, password protection or one time links, only DRM can be used to restrict how content is used. It can stop ebook sharing, content copying and editing, disable printing, and control expiry.
Alternatives to ebook DRM include:
So DRM is best for ebooks, but not all ebook DRM is equal. Some formats provide limited restrictions and have been comprehensively cracked – so choose your ebook format and ebook DRM solution carefully.