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Re: RC4 Security (formerly: Re: The unmentionable algorithm)

daemon@ATHENA.MIT.EDU (Donald E. Eastlake 3rd)
Tue Apr 22 11:35:50 1997

Date: Tue, 22 Apr 1997 11:20:27 -0400 (EDT)
From: "Donald E. Eastlake 3rd" <dee@cybercash.com>
To: Bill Stewart <stewarts@ix.netcom.com>
Cc: coderpunks@toad.com, cryptography@c2.net
In-Reply-To: <3.0.1.32.19970421232226.00653f40@popd.ix.netcom.com>

Also, while RC4 is a "trade secret", RSA plans to patent RC5.

Donald

On Mon, 21 Apr 1997, Bill Stewart wrote:

> Date: Mon, 21 Apr 1997 23:22:26 -0700
> From: Bill Stewart <stewarts@ix.netcom.com>
> To: perry@piermont.com
> Cc: coderpunks@toad.com, cryptography@c2.net
> Subject: Re: RC4 Security (formerly: Re: The unmentionable algorithm) 
> 
> >> Well, that makes RC4 sound rather unappealing.  However, is there any
> >> other stream or block cipher that's even remotely as efficient as RC4?
> >
> >SEAL ... b) is far faster than anything else I've ever seen. 
> 
> RC5 is pretty fast.  It's a block cypher, so it doesn't have the
> typical stream-cypher weaknesses, but it's also newer than RC4,
> so there's even more risk of something undiscovered being wrong.
> 
> #			Thanks;  Bill
> # Bill Stewart, +1-415-442-2215 stewarts@ix.netcom.com
> # You can get PGP outside the US at ftp.ox.ac.uk/pub/crypto/pgp
> #     (If this is a mailing list, please Cc: me on replies.  Thanks.)
> 
> 

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