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KevinH · 09-18-2019, 03:24 PM

It is telling you that according to the epub's encryption.xml file the font OEBPS/Fonts/font00229.otf has been obfuscated using Adobe's font obfuscation algorithm for some reason. When loading an epub, Sigil should automatically de-obfuscate any fonts so that Sigil can use them internally in Preview and reobfuscate them when saving.

I would exit out of Sigil NOT saving it and pass that original epub through epubcheck.

Next I would use an unzip tool to unzip the original epub and look closely at the encryption.xml file to see if it is correct and parseable. I would also look closely at the font file to make sure it was properly obfuscated and that it can be deobfuscated by the adobe font algorithm using the info from the opf main uuid.

Most fonts that use obfuscation use the IDPF method of font obfuscation but Sigil should properly handle either.

If you privately post a copy of the epub and pm me (KevinH) with a link to it, I should be able to tell you exactly what is going on inside Sigil with this font/epub.

09-18-2019, 03:24 PM	#2
KevinH Sigil Developer Posts: 8,774 Karma: 6000000 Join Date: Nov 2009 Device: many	It is telling you that according to the epub's encryption.xml file the font OEBPS/Fonts/font00229.otf has been obfuscated using Adobe's font obfuscation algorithm for some reason. When loading an epub, Sigil should automatically de-obfuscate any fonts so that Sigil can use them internally in Preview and reobfuscate them when saving. I would exit out of Sigil NOT saving it and pass that original epub through epubcheck. Next I would use an unzip tool to unzip the original epub and look closely at the encryption.xml file to see if it is correct and parseable. I would also look closely at the font file to make sure it was properly obfuscated and that it can be deobfuscated by the adobe font algorithm using the info from the opf main uuid. Most fonts that use obfuscation use the IDPF method of font obfuscation but Sigil should properly handle either. If you privately post a copy of the epub and pm me (KevinH) with a link to it, I should be able to tell you exactly what is going on inside Sigil with this font/epub. Last edited by KevinH; 09-18-2019 at 03:32 PM.