1997-05-12 - Re: Unexportable crypto

Header Data

From: “Graham C. Hughes” <graham.hughes@resnet.ucsb.edu>
To: “ET” <emergent@eval-apply.com>
Message Hash: f07b97c925f5123f7bde6ffb1db3df51c069076f12af93ed6b3c634737ac885e
Message ID: <87g1vsbokk.fsf@A-abe.resnet.ucsb.edu>
Reply To: <199705121618.MAA09197@jazz.cape.com>
UTC Datetime: 1997-05-12 17:36:00 UTC
Raw Date: Tue, 13 May 1997 01:36:00 +0800

Raw message

From: "Graham C. Hughes" <graham.hughes@resnet.ucsb.edu>
Date: Tue, 13 May 1997 01:36:00 +0800
To: "ET" <emergent@eval-apply.com>
Subject: Re: Unexportable crypto
In-Reply-To: <199705121618.MAA09197@jazz.cape.com>
Message-ID: <87g1vsbokk.fsf@A-abe.resnet.ucsb.edu>
MIME-Version: 1.0
Content-Type: text/plain


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"ET" <emergent@eval-apply.com> writes:

> A simple substitution cypher has a keyspace of
> 26! ~ 2**88
> Isn't this too strong to export?

No.  ITAR restricts key *size*, not keyspace.  A substitution cypher
has a key size of 2**4 <= 26 <= 2**5, you're not going to get the
Feds pissed off at you about it.
- -- 
Graham Hughes  http://A-abe.resnet.ucsb.edu/~graham/  MIME & PGP mail OK.
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