Quote:
Originally Posted by delphidb96
The DRM in an AZW file is, I believe, different. The Amazon Kindle can read a Mobi-DRM'd ebook, and a non-DRM'd Kindle file can be, by renaming the extension to .mobi or .prc, be read in any Mobi app, but the DRM'd version of Kindle files are unaccessible without breaking the encryption.
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The DRM scheme is identical to MOBI, all that is different is the PID. So what you say is correct, but only in the same sense that it is impossible to read an existing DRM-laden MOBI file on a new device. To read the MOBI file on a new device (without breaking the DRM) you need a new file with the PID of the device embedded in it. In the case of most MOBI e-book vendors, they will add the new PID for you and send you an updated file. Amazon won't add the PID of a non-Kindle to AZW files - but if they did then the files would work. The "essentially" part is one bit that is different in AZW files than in MOBI files, but I don't think MOBI reader software checks this bit.