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Old 07-26-2012, 01:04 AM   #39
DaleDe
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Join Date: Aug 2007
Location: Grass Valley, CA
Device: EB 1150, EZ Reader, Literati, iPad 2 & Air 2, iPhone 7
Quote:
Originally Posted by cybmole View Post
does obfuscating the font = encrypting it ?

google for once was not that helpful - so is there a difference between encryption and obfuscation ?

I've read the dictionary definitons, but...

when DRM is applied to a book - thats encryption, not obfuscation ?
but to protect fonts they are obusacted, not encrypted ??

the whole topic seems obfuscated to me
obfuscating does not mean DRM is applied. It is an XOR method of hiding the contents of the file so that it cannot be used by just copying it out and installing it in a fonts folder on a pc. DRM can be separately applied to the font file depending the the degree of protection that is wanted. By the way ADE method of obfuscating is slightly different from the idpf method described in their specification. However, I believe all eBook readers that support obfuscating use the Adobe method.

I personally do not embed fonts in eBooks I create but I have seen eBooks using obfuscating and I have seen licenses that allow this to be used to protect the font from being copied and used as it is. I have also seen DRM used on a font even when the rest of the book did not have DRM applied.

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