The old AlfCrypto DLL, SO and DYLIB files are ancient,
I don't have the systems to recompile them all, they
cause issues on ARM Macs, and I doubt with all the Python
improvements over the last years that they have a significant
performance advantage. And even if that's the case, nobody is
importing hundreds of DRM books at the same time so it shouldn't
hurt if some decryptions might take a bit longer.
This allows us to clean up the code a lot.
On Windows, it isn't installed by default and
most of the time not be found at all.
On M1 Macs, the kernel will kill the process instead.
Closes#33.
Now the plugin ZIP file (DeDRM_plugin.zip) can be run with a normal
Python interpreter as if it were a Python file (try
`python3 DeDRM_plugin.zip --help`). This way I can begin building a
standalone version (that can run without Calibre) without having to
duplicate a ton of code.
- Support "Standard" and "Adobe.APS" encryptions
- Support decrypting with owner password instead of user password
- New function to return encryption filter name
- Support for V=5, R=5 and R=6 PDF files
- Support for AES256-encrypted PDF files
- Disable broken cross-reference streams in output
There were a couple specific DRM removal plugins before the DeDRM plugin
was created. These are obsolete since a long time, there's no need to
still have the code to import their config.
If people are still using these ancient plugins, they'll have to update
to an older version of DeDRM first, and then update to the current one.
NoDRM