Comments on: Secure P2P for Pirates http://perimetergrid.com/wp/2007/11/06/secure-p2p-for-pirates/ Building Security in a Networked World Wed, 30 Nov 2011 05:01:08 +0000 hourly 1 http://wordpress.org/?v= By: A. peerhttp://perimetergrid.com/wp/2007/11/06/secure-p2p-for-pirates/comment-page-1/#comment-341 A. peer Mon, 21 Sep 2009 07:45:15 +0000 http://perimetergrid.com/wp/2007/11/06/secure-p2p-for-pirates/#comment-341 The fake files is a non-issue, in fact if someone download a file, and its not what he wanted, he wont seed it and report the fake to avoid others to download it.The torrent of choice must always be the one with the most seeds, not with the most leechers.he might even report bad quality etc, pointing out the waste of time, problem is, people dont really read before downloading, automating the verifcation could help. The fake files is a non-issue, in fact if someone download a file, and its not what he wanted, he wont seed it and report the fake to avoid others to download it.

The torrent of choice must always be the one with the most seeds, not with the most leechers.

he might even report bad quality etc, pointing out the waste of time, problem is, people dont really read before downloading, automating the verifcation could help.

]]> By: Grant Bugherhttp://perimetergrid.com/wp/2007/11/06/secure-p2p-for-pirates/comment-page-1/#comment-11 Grant Bugher Fri, 30 Nov 2007 16:41:44 +0000 http://perimetergrid.com/wp/2007/11/06/secure-p2p-for-pirates/#comment-11 Well, BitTorrent makes use of file hashes as well. The issue is that there's no canonical file to look for. If you want a copy of a new movie, how do you know what the hash code of the movie is? If you find 10 different copies, 3 of which are quite popular, all with different hash codes, how do you know which one to download? Since pirated media is almost always converted from another format, the hash of the "right" copy will still vary, depending on the precise codec settings used. BitTorrent works fine when you know <I>exactly</I> what file you want, but it's a lot harder to pick out fakes when you just want any MP3 or AVI copy of a specific song or video. Well, BitTorrent makes use of file hashes as well. The issue is that there’s no canonical file to look for. If you want a copy of a new movie, how do you know what the hash code of the movie is? If you find 10 different copies, 3 of which are quite popular, all with different hash codes, how do you know which one to download? Since pirated media is almost always converted from another format, the hash of the “right” copy will still vary, depending on the precise codec settings used. BitTorrent works fine when you know exactly what file you want, but it’s a lot harder to pick out fakes when you just want any MP3 or AVI copy of a specific song or video.

]]> By: gunslngerhttp://perimetergrid.com/wp/2007/11/06/secure-p2p-for-pirates/comment-page-1/#comment-10 gunslnger Fri, 30 Nov 2007 07:55:46 +0000 http://perimetergrid.com/wp/2007/11/06/secure-p2p-for-pirates/#comment-10 "With nothing but the filename to go on, users download the fakes, causing the seed count to go up and making the fake appear even more “realistic” on the tracker. Some sort of digital signature/PKI system would be very helpful here."This seems fairly obvious. It's the solution used by DirectConnect. Every file has a hash code and you can search by that rather than the filename, so even if someone changes the filename, you still know the file is the same, or know it's different even if the file size is the same. “With nothing but the filename to go on, users download the fakes, causing the seed count to go up and making the fake appear even more “realistic” on the tracker. Some sort of digital signature/PKI system would be very helpful here.”

This seems fairly obvious. It’s the solution used by DirectConnect. Every file has a hash code and you can search by that rather than the filename, so even if someone changes the filename, you still know the file is the same, or know it’s different even if the file size is the same.

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