[LAU] Looking for Audio Watermarking Advice & Tools

[Kevin Cosgrove]

On 23 October 2011 at 16:50, "Gabriel M. Beddingfield" <gabrbedd at gmail.com> wrote:

> On 10/23/2011 02:53 PM, Kevin Cosgrove wrote:
> >
> > On 23 October 2011 at 21:44, Nick Copeland<nickycopeland at hotmail.com>  wrote:
> >
> >>>   I'm looking for a Linux solution to watermarking audio
> >>
> >> Are you looking at an open operating system to help you close your=20
> >> mind? Forget the technical issues involved=2C I personally think you are=20
> >> talking to the wrong community: watermarking is a means of restricting=20
> >> distribution of visual material.=20
> >>
> >> Linux is not about restricting distribution of anything.
> >>
> >> Perhaps you should raise these questions on one of the Apple mailing=20
> >> lists where you will meet equally paranoid minds. Bringing these issues
> >> up on this list is out of line.
> >
> > Have you ever signed a file with GNUPG?  That's a watermark.  Have
> > you ever used an SHA or MD5 signature of a file, and verified those
> > signatures with GNUPG?
> 
> It's my understanding that "watermarks" are more than this.  That you 
> can add a watermark to a CD and that if it is played on a computer it 
> has a phone-home feature so that Big Brother will know that an 
> (un)authorised person has been given control of the CD.
> 
> I never did research to see if these black helicopters are real or not, 
> However, my brother-in-law in Nashville used to get to listen to 
> pre-released albums... but since he wasn't the official reviewer, he 
> needed to play the CD's only in audio CD players -- since playing it on 
> a PC would get him and his source in Big Trouble.

I don't need any black helicopters or any associated
capabilities.  If others create software to do that, either
closed or open source, then I don't think I'd turn on that part
of the feature set.

All I really want is a way that someone can tell that I created
a specific audio file.  Later I added the requirement to tell
that the audio file is intact.  Maybe I can do this now with a
detached checksum and gpg signature.  But, having the checksum
and signature inside the audio file is preferred.  That's sort of
like how RPM and DEB (presumed on the latter) validate author and
intactness of software packages.

Thanks....

--
Kevin