Thread: Amazon and DRM changes
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Old Yesterday, 06:37 AM   #3215
Sats
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Posts: 26
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Join Date: Jun 2023
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Quote:
Originally Posted by xyzzy_foo View Post
Safely Decrypt Kindle eBooks: Why BookFab Kindle Converter Leads the Way [2025 Update]

I found this new blog post by DVDFab. Maybe they're also watching MR and read what we wrote. DVDFab's conversion process recently got an upgrade, so it's possible it can now be handled completely locally.
But what is this "KFX v10+" DRM they wrote about? Could it be the super-strong DRM applied to textbooks and Indian eBooks?
I have read it and now I am very confused... Are there really that many Kindle converters that work from the browser? The only one I was aware of that had something like browser was previous version of Bookfab itself... Epubor, using methods from DeDRM would not need any access to Amazon servers... There are some python scripts on github that do create a "virtual" android device, but they are command-line and hardly "one-click".

In fact, theirs is the only tool that, to my knowledge, actively spoofed various settings, rather than following the verbatim protocol copied from one device or another. I *think* they accessed some API that gave out secrets for a particular device number, but I am not sure, ironically, since they use DRM... well, DRM-adjacent blight to obfuscate their executables.

Also, they mention that books with "hard encryption" (that was supported from 10.0.9, thank you very much) can no longer be downloaded with K4PC, and that is true, but they provide no alternative, since method that relies on downloading with K4PC obviously does not work...

The auto-scan method appears to be, well, something like hardcoded path scan? Or scanning the path that was lifted from kindle settings. That is... hardly groundbreaking tech.

Next, KFX V10... I have little clue. Maybe they refer to voucher version? Somehow? I think there is V11, and everything after is a set of random 4-numbers, like V9201 or something. Once again, they were supported, until Amazon added more, and more still. I think there might be over 50 now. A separate set for each platform. (maybe not, I did not count).

All, in all, article reads... odd to me. A bit like my school essays, all style, lots of words, little substance. Is it AI? Market-speak? Translation? I cannot tell.

All that said, BookFab does seem to provide, at least, convenience, and they are likely to keep updating it, so if somebody thinks that is a good value for money, by all means? I know my new tools are cumbersome, and may not be updated if I lose interest. It is, however, possible to use the source for my tool, dedrm and other plugins to make a single-click script that converts the whole kindle library to epubs Lots of work though.
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