6 expanded posts ยท every known parent and child
Responding to msg by a.brown@nexor.co.uk (Andrew Brown) on Tue, 2 Aug 9:55 AM >Has anyone got any more ideas? Andy: Some features of CAD programs such as AutoCad may be useful for concealment. Want to discuss here or by e-mail? Caution: I'm crypto impaired, but quite devious advantaged. John
On Tue, 2 Aug 1994, John Young wrote: > Some features of CAD programs such as AutoCad may be useful for > concealment. Hmmm, hadn't thought about that possibility. > Want to discuss here or by e-mail? Here should be fine, there seems enough interest. - Andy
On Wed, 3 Aug 1994, Andrew Brown wrote:
> On Tue, 2 Aug 1994, John Young wrote:
>
> > Some features of CAD programs such as AutoCad may be useful for
> > concealment.
>
> Hmmm, hadn't thought about that possibility.
>
> > Want to discuss here or by e-mail?
>
> Here should be fine, there seems enough interest.
>
Please keep discussing it here! There's only so much of this other
stuff that I can take - my brain needs refreshment.
How about hiding data in digitized audio? With enough audio the data
wouldn't degrade the signal noticably.
Brian
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----------------------------------------------------------------------------On Wed, 3 Aug 1994, Brian Lane wrote: > How about hiding data in digitized audio? With enough audio the data > wouldn't degrade the signal noticably. I've already done that, it's included in the s-tools v2 package as a module to conceal information in .WAV files. The effect on quality when using the LSB of an 8 bit 11Khz mono sample is not noticeable unless the original sound is highly pure (e.g. downloaded from a synth). Even then it only shows up as _very_ faint interference that needs a good hi-fi to hear and the original sample for comparison. Regards, - Andy
On Wed, 3 Aug 1994, Andrew Brown wrote:
>
> On Wed, 3 Aug 1994, Brian Lane wrote:
>
> > How about hiding data in digitized audio? With enough audio the data
> > wouldn't degrade the signal noticably.
>
> I've already done that, it's included in the s-tools v2 package as a
> module to conceal information in .WAV files.
is this a DOS only program, or are you distributing source?
Where can I FTP it from?
Brian
----------------------------------------------------------------------------
Linux : The choice of a GNU generation | finger blane@free.org
witty comments pending | for PGP key and subLit
----------------------------------------------------------------------------On Wed, 3 Aug 1994, Brian Lane wrote: > is this a DOS only program, or are you distributing source? > Where can I FTP it from? Windows 3.1 shareware, you get source if you register. If you want to take a look then try: ftp.dsi.unimi.it /pub/security/code/s-tools2.zip (I think!) The gzip steganography patches that I made are freely available from: ftp.netcom.com /pub/qwerty/Steganography I was particularly pleased with myself when these worked, since it demonstrates that you don't need sampled data in order to hide information. Regards, - Andy