Quote:
Originally Posted by barryem
I'm pretty sure that cryptography isn't one of the skills needed to deal with DRM removal realistically. I think the DRM is handled by the provided viewer, Kindle for PC, and that removal software just has to intercept the output from that.
I'm doing a lot of guessing here, I admit. This isn't something I've dealt with as a programmer. But I do know that DRM is mighty hard to crack and that removal programs for various media require a player provided by the vendor.
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Most of the time, DRM isn't cracked. It's removed, by capturing the decryption key. Currently the encryption keys are captured from logged-in programs: ADE 1.x and 2.x, K4PC, and Kobo Desktop.
If you have the key, you can open the file, and then write it back again without the encryption.