Re: [freenet-support] Remove all identifying content from posted files (especially audio)
I'd love to know about this too! 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? Thanks, -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 ___ 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
Re: [freenet-support] Remove all identifying content from posted files (especially audio)
... especially in pdf and doc files ... 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? Thanks, -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 ___ 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
Re: [freenet-support] Remove all identifying content from posted files (especially audio)
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
Re: [freenet-support] Remove all identifying content from posted files (especially audio)
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
