MobileRead Forums - View Single Post - Android E-book Decryption

somkk · 05-28-2012, 12:38 PM

Hi,

I've been gifted an android device (v2.2), which also comes with some books/audio/video content.

The e-books have .epb extension, and when I rename them to .zip, they open in winrar with the error "unexpected end of archive".

The list of files within the zip is shown by winrar/7-zip.
But, none of the files extract, as they fail CRC check.

When these books are opened on the android device, it momentarily shows a message "Unlocking FILENAME" etc.

I think some sort of encryption(?) has been applied.

How do I decode these books ?
Plz let me know.

I want to read them on my Kindle/Laptop.
And also, I'm curious so as to how such encryption schemes are implemented.

Tx!

05-28-2012, 12:38 PM	#1
somkk Junior Member Posts: 9 Karma: 10 Join Date: Mar 2012 Device: Kindle 5T	Android E-book Decryption Hi, I've been gifted an android device (v2.2), which also comes with some books/audio/video content. The e-books have .epb extension, and when I rename them to .zip, they open in winrar with the error "unexpected end of archive". The list of files within the zip is shown by winrar/7-zip. But, none of the files extract, as they fail CRC check. When these books are opened on the android device, it momentarily shows a message "Unlocking FILENAME" etc. I think some sort of encryption(?) has been applied. How do I decode these books ? Plz let me know. I want to read them on my Kindle/Laptop. And also, I'm curious so as to how such encryption schemes are implemented. Tx!