Dailydave mailing list archives
Re: Question of the day: iTunes + Watermarking?
From: "Dave Korn" <dave.korn () artimi com>
Date: Tue, 11 Jul 2006 10:19:32 +0100
On 11 July 2006 02:12, Anton Chuvakin wrote:
I followed the exact same procedure, on my PowerBook and a co- worker's Mac Mini, and received identical results. I don't know why the resulting hash is different from yours. Each computer downloadedSo, what does this prove: watermarking or decompressing of the lossy compression? I am not entirely sure why decompressing something which was produced with lossy compression would decompress differently thought... I would assume that if Ryan repeats his steps again he would get the samew md5....
It would be an interesting experiment to break both the files up into a few hundred medium-sized chunks and compare the md5s of the chunks. All we know so far is that we have two identically-sized binaries with different md5s. It could be as simple as a timestamp in a file header that's the only difference between them. Otherwise, I suspect it's time to start comparing FFTs. cheers, DaveK -- Can't think of a witty .sigline today.... _______________________________________________ Dailydave mailing list Dailydave () lists immunitysec com http://lists.immunitysec.com/mailman/listinfo/dailydave
Current thread:
- Question of the day: iTunes + Watermarking? Dave Aitel (Jul 10)
- Re: Question of the day: iTunes + Watermarking? Blue Boar (Jul 10)
- Re: Question of the day: iTunes + Watermarking? Steve Tornio (Jul 10)
- Re: Question of the day: iTunes + Watermarking? Anton Chuvakin (Jul 10)
- Re: Question of the day: iTunes + Watermarking? Dave Korn (Jul 11)
- Re: Question of the day: iTunes + Watermarking? Steve Tornio (Jul 11)
- Re: Question of the day: iTunes + Watermarking? Dave Aitel (Jul 11)
- Re: Question of the day: iTunes + Watermarking? Steve Tornio (Jul 11)
- Re: Question of the day: iTunes + Watermarking? Saad Kadhi (Jul 11)
- Re: Question of the day: iTunes + Watermarking? Danny Quist (Jul 11)
- Re: Question of the day: iTunes + Watermarking? Steve Tornio (Jul 11)
- Re: Question of the day: iTunes + Watermarking? Steve Tornio (Jul 10)
- Re: Question of the day: iTunes + Watermarking? Blue Boar (Jul 10)
- Re: Question of the day: iTunes + Watermarking? Michael Spath (Jul 11)
- Re: Question of the day: iTunes + Watermarking? Dave Korn (Jul 12)
- Re: Question of the day: iTunes + Watermarking? Michael Spath (Jul 13)