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Index > Heap > Good way to obfuscate MP3?

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TmX



Joined: 02 Mar 2006
Posts: 821
Location: Jakarta, Indonesia
TmX
A friend of mine asked me this question: is there a good way to obfuscate MP3s, so it can be decoded on mobile phone in short time?

His plan to sell digital audios on SD card, and in order to play the audio, you have to use a certain player. Otherwise it won't work.

Now I'm thinking to use TEA or Blowfish, for example, but I'm not sure if the decoding time will be short.
Post 18 Sep 2012, 08:50
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revolution
When all else fails, read the source


Joined: 24 Aug 2004
Posts: 17271
Location: In your JS exploiting you and your system
revolution
What is your threat model? In many cases a simple xor will do.

But, DRM? Really? Sad
Post 18 Sep 2012, 09:28
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TmX



Joined: 02 Mar 2006
Posts: 821
Location: Jakarta, Indonesia
TmX
revolution wrote:
What is your threat model? In many cases a simple xor will do.


Hmm, I forgot about that. I'll try that

revolution wrote:

But, DRM? Really? Sad


Actually, using DRM in BlackBerry smartphones is easy:
http://devblog.blackberry.com/2009/12/explaining-digital-rights-management/
http://www.blackberry.com/developers/docs/5.0.0api/net/rim/device/api/io/file/ExtendedFileConnection.html
I have no plan to use it yet.
Post 18 Sep 2012, 09:50
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