[Flac-users] Re: Fingerprint Verification Problem

[Josh Coalson]

--- "David W. Tamkin" <dattier at panix.com> wrote:
> Our Leader asked,
> 
> | In any case, if you run flac -t and it passes, the only extra
> | information you get from comparing the MD5 sum to the text
> | file is to know if the original seeder put the right text file
> | together with the right FLAC file.  But if you don't need the
> | contents of the text file to know if the file was d/l'ed OK,
> | why do you need the text file at all?
> 
> [Anywhere in here I say "fingerprint," I mean the internal one.]
> 
> As it has been explained to me, the original seeder keeps a file of
> fingerprints available by FTP or HTTP, so that anyone down the chain
> can
> compare the fingerprints of his/her FLACs to those created by the
> seeder.  If
> someone along the way has reencoded the same music with different
> FLAC
> options, the fingerprint won't change, so there's nothing to be
> concerned
> about.  However, if the recipient's FLAC files pass flac -t but the
> fingerprints don't match those on the seeder's site, somebody along
> the way
> has changed the underlying WAV data.  That's a two-edged sword: it
> stymies a
> malefactor from altering the WAVs out of mischief, but it also
> prevents a
> music lover from adjusting track marks, declicking, or degapping.

I thought once you change the audio it requires a new seed.

Josh


__________________________________________________
Do you Yahoo!?
New DSL Internet Access from SBC & Yahoo!
http://sbc.yahoo.com