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#241 |
The Grand Mouse 高貴的老鼠
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Location: Norfolk, England
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We are indeed. The PDFs you're using do technically have DRM (in that they, as you say, prevent certain uses, e.g. printing).
But these limits only apply when used with software that obeys them. There's no actual encryption of the PDF contents, only some extra metadata asking the viewing program not to allow certain things. Since the PDF can be read without a password, calibre can convert it to some other format. I must admit that I don't often use PDFs, and I'd forgotten that this limited form of password-protected DRM was possible. So, let me be a little more precise in my language. Calibre does not contain any code that circumvents DRM that effectively controls access to the content of ebooks. Last edited by pdurrant; 03-29-2012 at 05:35 PM. |
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#242 | |
The Grand Mouse 高貴的老鼠
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Converting secured PDFs is not similar to breaking DRM that involves encryption and so effectively controls access to the contents. |
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#243 |
Stercus accidit
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Well I'm sorry, but at the risk of being rude, maybe you should read what people actually say instead of always trying to prove them wrong out of hand. I know that I've been guilty of this too, but that knowledge doesn’t make it any less frustrating.
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#244 |
The Grand Mouse 高貴的老鼠
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I apologise again.
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#245 | |
Grand Sorcerer
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Location: SF Bay Area, California, USA
Device: Pocketbook Touch HD3 (Past: Kobo Mini, PEZ, PRS-505, Clié)
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B&N's epubs require a password to open. Apparently, many people are happy with that approach to ebook sales. I doubt Calibre will open PDFs encrypted with Vitrium's "ProtectedPDF" software. It's what some online universities use... it not only requires a password to open, it has to check in with the server every time it's opened. Only currently-registered student IDs can read the locked PDFs. |
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#246 |
temp. out of service
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At the risk of being called a smartass: some people wouldn't even never notice this pseudo limits on the files given to them, just because of said reading sw dependency. I know that KDEs ocular doesn't mind e.g. the print prohibition bit so no wonder one forgets sometimes this crap exists, especially if you rarely are hindered by it. Using linux be it even on some of ones machines makes such quite probable. Give peace now pal.
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#247 | |
Chasing Butterflies
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![]() If I forget to return a physical book to the library, they don't have it anymore. |
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#248 |
Award-Winning Participant
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Maybe, if you wanted to know if Calibre could convert a PDF that had the edit permission restricted, then you should have asked that, rather than referring to ambiguous and inappropriately juxtaposed concepts, and being rude to people who couldn't read your mind.
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#249 |
Wizard
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Just curious what is obscure about secured PDF? I admire pdurrant for admitting he was not fully informed.
Helen |
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#250 | ||
occasional author
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All of you have opinions that are yours. I too have the opinion that I state above and it seems to be working for me. Elfwreck, you don't know that you haven't read my work. Granted you haven't read a drm copy, but besides that, you can't be sure. I have been around a bit longer than eBooks in general. I will point to first ISBN issued to an ebook in 1998, and the MS Reader in 2000 as the practical first dates, with more in 2002 and the start of wide use maybe 2005 with Amazon mobi and 2004 and 2006 with Sony. Sure my books can be and are pirated. I check on that on occasion. Sort of like going in the book store and checking the racks. A few authors make a decision to not use DRM and then most of those publicize that in order to curry favor with "their public." How many significant authors do you know that do that? Bottom line? Only one year has seen me make more from books than engineering. That was that "ghosted biography" I mentioned elsewhere, a once in a lifetime event. Of course then I was still a young engineer and didn't have the same position with the company I now enjoy. My wife who is an entrepreneur herself reminds me occasionally that I have a job I enjoy, a high position with an interest in the company that will continue when I retire, and that it is very steady and dependable. What author can claim that? Not many? DRM has faults but it is the best system available. Hopefully it will get better, and perhaps in the future once a book is sold to a person, in DRM form for a certain eReader, that person will have a lifetime ability to transfer that one copy of the book to any eReader they then choose. |
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#251 | |
Wizard
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Where I wonder are the thousands (or even hundreds of people) who have lost there content due to an ereader change. The excuse/justification for piracy is that it could happen. And of course it could, but the reports of people losing their ebook priveledges from Amazon et. al. are sneered at in an unbecoming fashion by those who advocate their rights to pirate because Amazon or someone else may possibly do that to them some day. Pigs may not fly before this happens but they will at least have little wings on thier hoooves. Helen |
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#252 |
Award-Winning Participant
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#253 |
Sith Wannabe
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It give the author the illusion of control and helps them sleep better at night?
That's the only practical effect, since there's never been a DRM system, for any medium, that wasn't broken. In fact, the more elaborate, the more likley it is to be broken and/or circumvented. Geeks like challenges. |
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#254 | |||||
Grand Sorcerer
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I didn't say I hadn't read your works (although I don't think I have); just that you hadn't gotten any money from me. That, I'm fairly sure of. I'm very selective about what pbooks I buy new; it's a tiny handful and mostly nonfiction. (Religious books & gaming books.)
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The most obvious answer is "that lady who wrote something about teenage wizards." Other than her? Harlan Ellison. Diane Duane. Lois McMaster Bujold. But listing authors is pointless if I don't know your criteria for "significant." Quote:
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In the long run, whom does DRM benefit? Quote:
I have no idea how you think DRM could get "better." As long as people have access to keyboards, there will be no perfect DRM. The earliest bootleg books on the internet weren't scanned-and-OCR'd; they were typed in. While almost any DRM can be cracked by talented hackers, the *simplest* way around DRM is just to display the book on one device, and type the contents into another. But it's not like we're going to run out of copying & screencapping tools, nor that encryption will somehow get better. It can't--because in order for the customer to read the book, they need the key. Then it's not a matter of "how do I break the encryption" but "how do I copy content out of one program into another"--a much simpler puzzle, because if it's displaying, it's somewhere in the computer's temporary storage. |
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#255 | |
Stercus accidit
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Quote:
“OK the way I see it, and I may be wrong, it has been said before, is if you have your ebook library in Calibre, which is in a folder on your hard disc and let's say you add a mobi to your library. If you change your ereader and want to reread it, you plug in your ereader and drop the book onto the device icon and Calibre will convert it to your new format. So does Calibre break the DRM or will it just not convert it? Because it converts secured PDF's which is similar. ” If you'd followed this thread you would know that I wasn't asking that question, but talking about something entirely different. I don't expect you to be a mind reader, just a reader. |
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