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Re: UUNET Network Encryption Patents

"Carl F. Muckenhirn" <cfm@columbia.sparta.com> Mon, 17 June 1996 22:13 UTC

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Date: Mon, 17 Jun 1996 18:17:21 -0400
To: Jim Thompson <jim@smallworks.com>
From: "Carl F. Muckenhirn" <cfm@columbia.sparta.com>
Subject: Re: UUNET Network Encryption Patents
Cc: "Carl F. Muckenhirn" <cfm@columbia.sparta.com>, "C. Harald Koch" <chk@border.com>, ipsec@TIS.COM
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At 4:31 PM 6/17/96, Jim Thompson wrote:
>I'm not an IP lawyer (though we have one who works here), but this
>
>> Both network ports have the same network address, making the device
>transparent
>> to the local area network in which it is spliced. The device operates by
>> selectively encrypting or decrypting only the data portion of a data packet,
>> leaving the routing information contained in the header and  trailer portions
>> of the data packet unchanged.
>
>Would seem to leave IPsec in the free and clear (so to speak.)
>
>Jim

Pointing this out reminds me of a "non-military" application. The "Bump in
the Stack Encryptor" by Steve Bellovin (et al, I just can't remember who al
is). A few years back provides exactly this functionality.

carl.

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