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Old 09-05-2012, 11:01 AM   #1
bookme
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pls advise if any open source platform for DRM on linux for small publishing company

I can't find out more info for "Project DReaM"
Is it still valid and active ?

Looking for open source DRM on linux platfrom both server side and eReader side.

Thanks ,guys.
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Old 09-05-2012, 11:12 AM   #2
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Open source DRM is silly. Being open source, the code would have to be released and what good is DRM when the code to how it works can be read by anybody and tools easily made to circumvent the DRM?

DRM is a waste of money and eBook DRM can already be removed very easily. Do you want to possibly screw your customers (those that buy and cannot remove the DRM)?
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Old 09-05-2012, 11:16 AM   #3
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It isn't often I completely agree with Jon, but yeah... Open Source DRM is a contradiction in terms. Just forget about DRM and provide a good product. DRM has never prevented ebooks from being pirated.
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Old 09-05-2012, 11:31 AM   #4
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It isn't often I completely agree with Jon, but yeah... Open Source DRM is a contradiction in terms. Just forget about DRM and provide a good product. DRM has never prevented ebooks from being pirated.
Well, I agree and disagree...

PGP was open source and that made it much better. As Phil Zimmermann the creator of PGP had said... and encryption algorithm that can be broken by simply knowing the algorithm is security by obscurity. PGP was secure because having the code didn't help if you didn't have the private key.

So, I disagree that an Open source DRM platform could not exist and be secure. Most "breaches" of DRM out there isn't actually a breach.... they are more decryptors that work with the keys which are retrieved from install of the various eReading software.

Where I agree...

DRM is a waste of time and money since it doesn't really stop unauthorized copying in any way.

BOb
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Old 09-05-2012, 11:39 AM   #5
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Not necessarily. Encryption can be open source, and still be secure. I know how a safe works, but does that mean I can easily break into one? Encryption typically requires a key, or some variable to salt the hash (so the output changes). I can know the algorithm, but if I don't know all the information that was used to create the output, the data is still locked away. If I can cheat the system and get a key (as mentioned is how pretty much all known DRM removal apps work), then I can reverse the process. Otherwise, my only real option would be to brute force it, which is to basically guess what the key is, see if that produces an acceptable result, and try again if not.

As far as what the OP wants, probably won't find much. Most FLOSS guys are decidedly antiDRM, because it flies in the face of the spirit of open source (free and open sharing). On top of that, it would actually hinder sales, because then it would only work on devices that supported that particular DRM. For instance, if the OP publishes a book in a custom DRM method, it wouldn't be usable on really any ebook reader.
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Old 09-05-2012, 12:06 PM   #6
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Quote:
Originally Posted by pilotbob View Post
So, I disagree that an Open source DRM platform could not exist and be secure. Most "breaches" of DRM out there isn't actually a breach.... they are more decryptors that work with the keys which are retrieved from install of the various eReading software.
DRM requires that the end user's software has the key to decrypt the DRM. Open Source DRM would require that the location and specification of the key are readily available, along with the exact decryption algorithm.

Open Source DRM will remain 'secure' for a very, very short time.
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Old 09-05-2012, 12:29 PM   #7
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Open Source DRM will remain 'secure' for a very, very short time.
I guess we have different descriptions of "secure". To me secure means that you can get to the plaintext contents of a file unless you have the key, even if you know the algorithm.

With ANY encryption, Key management is the weakest point. This is why eReader used the customers credit card number as the key... the figured people would not be willing to share that. Of course, knowing that you can use your credit card to decrypt a file and then share IT rather than your credit card.

So, Adobe DRM is not 'secure' (by your rendering) either. The fact that it is closed source didn't change the fact that once they key is available a cyphertext can be turned into plaintext very easily.

BOb
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Old 09-05-2012, 12:44 PM   #8
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I guess we have different descriptions of "secure". To me secure means that you can get to the plaintext contents of a file unless you have the key, even if you know the algorithm.
You're using it in a technical sense about the encryption. I'm using it colloquially as a description of the entire system.
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Old 09-05-2012, 02:06 PM   #9
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Originally Posted by pdurrant View Post
DRM requires that the end user's software has the key to decrypt the DRM. Open Source DRM would require that the location and specification of the key are readily available, along with the exact decryption algorithm.

Open Source DRM will remain 'secure' for a very, very short time.
The thing is though, the key could be anything. OpenPGP is completely opensource, and operates on roughly the same principles as DRM, and is considered one of the most secure encryption methods available to the public. You don't hear about that getting cracked. It is not as simple as "the key must be stored here, so copy that and you're freely available to open it". And hell, even if you go based on your methods, that isn't any more secure than Adobe ADEPT or any of that stuff.
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Old 09-05-2012, 02:55 PM   #10
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The thing is though, the key could be anything. OpenPGP is completely opensource, and operates on roughly the same principles as DRM, and is considered one of the most secure encryption methods available to the public. You don't hear about that getting cracked. It is not as simple as "the key must be stored here, so copy that and you're freely available to open it". And hell, even if you go based on your methods, that isn't any more secure than Adobe ADEPT or any of that stuff.
It is exactly as simple as "the key must be stored here, so copy that and you're freely available to open it".

Open Source software means the source code is available. So you can easily tell exactly how the key is stored or generated, and what algorithm is used to decode.

OpenPGP is secure (colloquially) because people keep their keys secret. A DRM system can't keep the keys secret. The end users's software must have the key for the end user to be able to read the book.
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Old 09-05-2012, 04:27 PM   #11
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As pdurrant has pointed out, secret keys must be kept secret. If you have a closed group of trusted users, you can have open source DRM. If every reading device has the key somewhere on it, somebody will find it. All DVD drives have those secret keys, so somebody took one apart and read out the memory chips. Same thing could be done on a reader; but why bother when there is a Windows app with the key buried in it on my computer?
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Old 09-05-2012, 11:41 PM   #12
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There are ways to make DRM highly secure, but they would be very inconvenient.

The bottom line is, DRM does not stop copyright violations and is a waste of money. Can it be secure is a moot point.

BOb
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Old 09-06-2012, 09:45 AM   #13
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Just because something is open source, doesn't mean the keys cannot be kept secret. There are a variety of ways to make things work. Using checksum and watermarked signatures for authentication of the app that passes the key, using an authentication server, multiple keys used in a non preset order, etc.

Security through obscurity is not security at all. Obfuscation only slows down attempts to figure out things, but people will eventually figure out how it works. It would have the same issues as DRM of any sort, open source or not. I mean, look at SecuROM, Mobi DRM, ADEPT, Fairplay, etc. All of them have been broken. You can't really crack them, but they can be stripped on an authenticated system. This is just an issue with DRM itself.
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Old 09-06-2012, 05:27 PM   #14
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Hellmark.. we keep saying the same thing and people aren't listening.



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Old 09-07-2012, 04:13 AM   #15
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An encrypted message can be secure if both parties have an interest in keeping it secure. But attempting to keep a message secret when one the receptor is willing to release the unencrypted message to the public is fundamentally flawed.
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