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Old 09-11-2013, 03:20 PM   #1
PascalH
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Generating read-only epub files
Hello,

I'm a french writer.
I intend to sell my ebooks on my own website.
I do not want to use DRM or stuff like that, I just want to protect my text against alterations.
With wordprocessor, there is an option that allows to protect the file, and to offer it in read-only mode.
I use Sigil to create epub files on my Mac, and I've not found a way to generate such read-only file.
Thanks for your help.

Pascal
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Old 09-11-2013, 09:49 PM   #2
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I am not aware of any such mechanism. You can obtain a hash (eg: SHA) or electronic signature (eg: PGP) of the original file so that it is easy to detect if the file content has been changed. Software downloads use this feature so that people can check what they downloaded against a record of the hash/signature of your website to make sure the file hasn't been tampered with.

The read-only mode in your word-processor is not safe with regard to remote distribution. (If nothing else the contents can always be copied to a new document.)

Some distributors add DRM whether you want them to or not (if it is a book for sale), and so they will change your epub whether you want them to or not.

Software like Calibre may also change epubs - the default settings of its ebook viewer saves a bookmark setting inside the epub itself (or it used to, haven't checked recent versions, I just know it was something I really didn't like, but thankfully it can be turned off).

Here on MR I've even seen comments from readers that correct the content of, and/or adjust the style settings of, their epubs. This is not something I would wish to prevent.

I am curious to know why you are concerned about someone changing the file.
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Old 09-12-2013, 01:55 AM   #3
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Thanks,

I'm concerned because I do not want someone changing MY words (a thing that cannot be done with a printed book), I'm not concerned about copy.

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Old 09-12-2013, 02:41 AM   #4
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Sure they can change your words in a printed book - a bit of white-ink and a black pen . More likely, they would scan and OCR it and then go ahead and do what they like - if that was anyone's intention. But it seems unlikely, and as long as you still have the original it doesn't really matter what someone does to their own copy, does it?
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Old 09-12-2013, 05:23 AM   #5
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Quote:
Originally Posted by PascalH View Post
Thanks,

I'm concerned because I do not want someone changing MY words (a thing that cannot be done with a printed book), I'm not concerned about copy.

Pascal
You could use images instead of text, but anyone who really wanted to fix your typos would still be able to do it.
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Old 09-12-2013, 11:51 AM   #6
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ok, thanks. I'll try not to be paranoïd.

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Old 09-12-2013, 12:19 PM   #7
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ok, thanks. I'll try not to be paranoïd.

Pascal

I just got a call from someone who wanted to know where you were.




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Old 09-12-2013, 03:05 PM   #8
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France.
What's the point ?
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Old 09-12-2013, 04:35 PM   #9
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France.
What's the point ?
I think this was a 'lost-in-translation' joke.






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