On Thu, Sep 10, 2009 at 6:54 AM, SmallSister development <smallsis...@xs4all.nl> wrote: > Brian Mearns wrote: >> I understand the basic architecture of Freenet and how it protects >> contributors, but I'm concerned that the files themselves might >> contain identifying information about the source of the file. In >> particular, for audio files such as MP3, Ogg Vorbis, and Flac. Does >> anyone have any information on making sure there are no >> "fingerprints" left on these files when posting? > > There is no way to be certain. There could be a future algorithm piecing > together just enough bits from a file to identify you. Word frequency > analysis has been used to discern likely writers of a plain text file. > Yes, you can avoid stupid mistakes by checking for "known signatures" > and removing them, but that is something that would be different for > different file types (ogg would be somewhat different from mp3; but doc > and pdf require totally different approaches.) It would be useful to > have tools that can identify and remove watermarks and Freenet would be > a great place to publish them (with source code please!) > > Peter. > _______________________________________________ > Support mailing list > Support@freenetproject.org > http://news.gmane.org/gmane.network.freenet.support > Unsubscribe at http://emu.freenetproject.org/cgi-bin/mailman/listinfo/support > Or mailto:support-requ...@freenetproject.org?subject=unsubscribe >
Bugger, I didn't even think of steganographic watermarks (shame on me), I was thinking more in terms of meta data known to be stored with various file formats (like ID3 tags), but this seems to be more complicated than I expected. Thanks for the insight. -Brian -- Feel free to contact me using PGP Encryption: Key Id: 0x3AA70848 Available from: http://keys.gnupg.net _______________________________________________ Support mailing list Support@freenetproject.org http://news.gmane.org/gmane.network.freenet.support Unsubscribe at http://emu.freenetproject.org/cgi-bin/mailman/listinfo/support Or mailto:support-requ...@freenetproject.org?subject=unsubscribe
