[ogg-dev] Encrypting Ogg

[Shawn "AutoDMC" Boles]

Howdy.

I have a application I'm developing where I need to encrypt the data 
inside an OGG stream.  I will be using a regular block cypher (AES, or 
others... configurable); and I would like to encrypt the pages in an OGG 
stream.

I'm thinking that if I sit my decrypter in between the reading 
application and the encrypted file, you should be able to use all the 
normal seeking operations, etc, on the "encrypted" file as the cleartext 
stream.

But my brain gets a bit stuck on implementation... I'm not quite sure 
how to "interpose" my library/application that way.

I'm using Python for development (I can always backtrack to C++/etc); 
my application should take an encrypted OGG stream and a key, and you 
should be able to seek through the file as if it wasn't encrypted.

Any pointers?  Similar projects?  Any help would be appreciated.
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