Amazon VOD Purchased Content - Possible to Decrypt?

[reydson]

I have some stuff I bought some time ago on Amazon Video On Demand. I am able to download them to my iPad and play them offline within the Amazon VOD app on the iPad, but I can't, for example, download them using UVD. When I check the folder where the Amazon App stores the videos I see several files named .cachedHeaders and .data. If the Amazon app can play offline, it means there is a offline key to decrypt content. I just don't know how. Can somebody help me?
Here's a screen capture of the video files downloaded from Amazon VOD:

http://puu.sh/gYtGz/855999176a.png

Also, here is the content of the first .CachedHeaders:

<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
<plist version="1.0">
<dict>
<key>Cache-Control</key>
<string>no-cache</string>
<key>Connection</key>
<string>keep-alive</string>
<key>Content-Length</key>
<string>33109</string>
<key>Content-Type</key>
<string>video/mp4</string>
<key>Date</key>
<string>Thu, 02 Apr 2015 02:59:46 GMT</string>
<key>Last-Modified</key>
<string>Mon, 24 Mar 2014 07:08:57 GMT</string>
<key>Pragma</key>
<string>no-cache</string>
<key>Server</key>
<string>Microsoft-IIS/7.0</string>
<key>X-ASIHTTPRequest-Response-Status-Code</key>
<integer>200</integer>
</dict>
</plist>

Also, there is a folder in the app called DRM store with several files, including keyfile.dat and playready.hds