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1997-09-09 - Re: Gao’s Chaos Cryptosystem Algorithm

Header Data

From: stewarts@ix.netcom.com
To: ichudov@Algebra.COM (Igor Chudov @ home)
Message Hash: 8be72dce6978b24ea7f674272f6eb9db92718d973d47f457358033300021e3db
Message ID: <3.0.3.32.19970909084118.0069266c@popd.ix.netcom.com>
Reply To: <v03102807b03a832ba2fb@[207.167.93.63]>
UTC Datetime: 1997-09-09 19:45:07 UTC
Raw Date: Wed, 10 Sep 1997 03:45:07 +0800

Raw message

From: stewarts@ix.netcom.com
Date: Wed, 10 Sep 1997 03:45:07 +0800
To: ichudov@Algebra.COM (Igor Chudov @ home)
Subject: Re: Gao's Chaos Cryptosystem Algorithm
In-Reply-To: <v03102807b03a832ba2fb@[207.167.93.63]>
Message-ID: <3.0.3.32.19970909084118.0069266c@popd.ix.netcom.com>
MIME-Version: 1.0
Content-Type: text/plain




At 11:50 PM 9/8/97 -0500, Igor Chudov @ home wrote:
>I think that what Nobuku described is not a private key system (because
>keys cannot be reused), but rather an approach to generating one time pads.

Arrrgh!  No!  If you read the early references, it's clearly a stream cypher, 
and used as such.  The same bitstream is generated at both ends.
Pretending it's a True Random One-Time Pad would be snake oil, 
but that's your mistake, not Nobuku's or Gao's.
It's true that keys cannot be reused, but that's the same for RC4.

>> Do you think means of generating one time pads have been lacking?
>I think that one more good way of doing it would not hurt.
And one more non-truly-random way of doing it just puts more snake oil on
the shelf.
If there are any bytes that are correlated and not independent, it's Bad Pad.

Tim May wrote:
>> Why do you think a private key system, even one based on trendy buzzwords
>> (e,g, "chaos") is interesting?
Crypto mathematics is always interesting, if written well,
and if it's the first time you've seen something rather than Yet Another
LCM PRNG.

Thread