Quote:
Originally Posted by pdurrant
I've been in contact with Bill Davis of fontmarketplace.com, who was kind enough to check the output from his copy of Indesign CS4, which it turns out does encrypt the fonts it embeds, although not using the IDPF encryption.
|
Yes, InDesign is using Adobe algorithm which predates IDPF. It is described here:
http://www.adobe.com/devnet/digitalp...protection.pdf
Quote:
|
I haven't found any tools that I can easily use to just encrypt the fonts in an ePub, so I'm writing my own python script to do it. Goodness - python's fun! I'm currently to the stage where I have my encryption key and a list of fonts in the ePub, and now 'all' I have to do is write out the ePub with the amended fonts and an added encryption.xml file....
|
EPubGen (
http://code.google.com/p/epub-tools/wiki/EPUBGen, written in Java) can subset and encrypt/obfuscate most OpenType and TrueType fonts using both IDPF and Adobe algorithms. Only Adobe algorithm is supported in the field as far as I know, IDPF algorithm will be implemented as well.
I think doing both subsetting and obfuscation puts it quite firmly on the embedding side of the fence.