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26th April 2004, 09:56 | #1 | Link | |
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Jon Johansen releases DeDRMS
Johansen, who originally released the DeCSS code, and went thru several court battles over it, has released DeDRMS. Here's some Slashdot discussion on it. Johansen also released the code that FairPlay was based on, which Apple has been systematically removing from the internet.
Anyway, back to DeDRM. The readme states Quote:
Last edited by wmansir; 26th April 2004 at 10:16. |
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26th April 2004, 11:33 | #2 | Link |
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considering that the playfair host was just C&D'd (not even Microsoft has sued people for distributing DivX3.11, or the makers of the e-book DRM removal tools - so much for Apple being nice) better download now
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27th April 2004, 12:47 | #3 | Link |
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Has anybody had any luck running it? I've compiled it just fine, however when I run a M4P through DeDRMS I get no output, no status message either.
I have VLC and have generated the proper playback keys. Do I have to have those in each directory with the song I am DeDRMS'ing?
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27th April 2004, 19:16 | #4 | Link |
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I don't have any iTunes songs so I can't try it myself, but I believe somebody who signed up earlier today might be able to help you (once he realizes he doesn't have to wait the 5 days
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27th April 2004, 21:46 | #5 | Link | ||
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Quote:
Quote:
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28th April 2004, 00:56 | #10 | Link | |
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28th April 2004, 18:19 | #12 | Link |
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http://apple.slashdot.org/apple/04/0...id=185&tid=188
Has a small "Update" in the message, which almost hints that perhaps the encryption method has changed (or similar?). Anyone got any more evidence of that? -Nic ps Nice to have you here Jon... |
29th April 2004, 04:05 | #13 | Link |
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I don't use iTunes or have an iPod, so perhaps someone can answer a few questions. How does iTunes handle DRM when it comes to the iPod? Obviously the iPod itself can't authenticate the file online, so is the file locked to the player itself (via some unique hardware ID) by iTunes? Or does iTunes load a 'clean' version onto the player, which cannot be downloaded off the player? I guess my basic question is: how does the iPod authenticate the files?
I started thinking about this because I wondered, if they change the DRM authentication process does that require a firmware upgrade for the iPod? Or does it's authentication process remain unchanged? |
29th April 2004, 11:48 | #14 | Link |
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The key store (SC Info.sidb) is encrypted using a system specific key. When you sync with the iPod the key store is decrypted and then encrypted with your iPod's system key.
The recently released iTunes 4.5 and new iPod firmware changes the way the key store is encrypted. |
29th April 2004, 17:49 | #15 | Link |
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Wow the man himself!
You're a legend JonLech - Anyone that can go through what you did and still stand up for their rights is a true legend in my book. I just wanted to say thankyou and hope only good things come to you in the future! -- Till Say No to DRM - Disgusting Rights Management |
30th April 2004, 06:33 | #16 | Link |
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@Jon:
I hope you don't mind a few questions while you are here I thought that in PlayFair (correct me if I'm wrong) the files were encrypted with AES using what I can only assume is a user-specific key that is generated from some sort of system-specific values. But when I look at the source for DeDRMS, I don't really see any AES decryption taking place (as opposed to VLC?). Can you explain a little more about how the encryption works and how you figured it out? Last edited by int 21h; 30th April 2004 at 07:34. |
5th May 2004, 13:42 | #20 | Link |
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Thanks for the info Jon
http://developers.videolan.org/cgi-b...sroot=VideoLAN For those who are curious, like me, as to what has changed... -Nic |
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