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1994-08-03 - Re: Steganography (Was Re: What kind of encryption to incorporate?)

Header Data

From: Andrew Brown <a.brown@nexor.co.uk>
To: cypherpunks@toad.com
Message Hash: 914378961c61b88e322c72f26a6837914c0dacbddbdd061ca0cb60d404d625c0
Message ID: <Pine.3.89.9408031616.A7515-0100000@vulcan.nexor.co.uk>
Reply To: <Pine.3.89.9408031013.A15429-0100000@squeaky.free.org>
UTC Datetime: 1994-08-03 15:12:57 UTC
Raw Date: Wed, 3 Aug 94 08:12:57 PDT

Raw message

From: Andrew Brown <a.brown@nexor.co.uk>
Date: Wed, 3 Aug 94 08:12:57 PDT
To: cypherpunks@toad.com
Subject: Re: Steganography (Was Re: What kind of encryption to incorporate?)
In-Reply-To: <Pine.3.89.9408031013.A15429-0100000@squeaky.free.org>
Message-ID: <Pine.3.89.9408031616.A7515-0100000@vulcan.nexor.co.uk>
MIME-Version: 1.0
Content-Type: text/plain



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

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