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List:       linux-newbie
Subject:    Re: Amazon E-Books
From:       "James Miller" <7sdm-ocsf () dea ! spamcon ! org>
Date:       2006-02-18 14:42:47
Message-ID: 9a4ff4f30602180642gce984f6oab94c4f10dc943d () mail ! gmail ! com
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On 2/18/06, Conway S. Smith wrote:
> Essentially, the file you'll download from them won't actually be the
> pdf; it'll be an "ebx.etd" file, which is an XML Electronic Book
> eXchange file, and contains info in it on where to download the actual
> pdf, and how to decrypt it.  Yes, the actual pdf is encrypted.  To
> decrypt it you have to have Adobe Reader 6.0 or higher on Mac or
> Windows, because even though Adobe Reader up to & including 7.0 is
> available on Linux, the Linux versions do not have the "Digital
> Editions" feature, which is what does the DRM & decryption.  Don't ask
> me why they don't have it in the Linux version, it doesn't make any
> sense to me.

Yeah, I've run into these before.  Actually a few years ago for the
first time. My guess is that they don't have a Linux version because
it would be too easy to reverse-engineer and thus break the encryption
scheme. But that's just my decidedly unprofessional opinion.

James
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