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Old 12-24-2017, 03:37 AM   #16
bookreader123
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Originally Posted by wzhsunn View Post
Thank you for your reply .
Because I want to create a drmed epub book that opened by ibooks reports "drmed epub".
I have upload the epub file .
Now if I have the epub file, I can rename test.peub to test.zip and then extract it and delete the META-INF/encryption.xml and again zip it and rename to sth.epub.
Now I can read that epub without DRM trouble. That means DRM is useless. Isn't it? How can I secure it more?
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Old 12-24-2017, 03:39 AM   #17
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Now if I have the epub file, I can rename test.peub to test.zip and then extract it and delete the META-INF/encryption.xml and again zip it and rename to sth.epub.
Now I can read that epub without DRM trouble. That means DRM is useless. Isn't it? How can I secure it more?
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Old 12-24-2017, 06:53 AM   #18
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All that means is that none of the content was actually encrypted.

Sent from my Nexus 7 using Tapatalk
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Old 12-26-2017, 12:28 PM   #19
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Note that there are two different things that can have DRM applied. The book and the font and these are independent. Not that that changes anything but I thought it was worth mentioning.
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Old 12-27-2017, 10:46 AM   #20
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Quote:
Originally Posted by DaleDe View Post
Note that there are two different things that can have DRM applied. The book and the font and these are independent. Not that that changes anything but I thought it was worth mentioning.
An obfuscated fonts in ePub can be made normal again using Sigil.
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