Great Circle Associates Firewalls
(April 1994)
 

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Subject: Re[2]: What??
From: "Ronald A Martin" <0066169 @ CCMAIL . EMIS . hac . com>
Date: 08 Apr 1994 11:13:11 GMT
To: firewalls @ GreatCircle . COM
Comment: MEMO 1994/04/08 11:19

>Would someone fill me in on the Digital Pathways DES keys thing?
>I'm in the dark. What are they, and why are they so popular?

)        It's a handheld cryptographic authentication calculator. They cost
)~$55 in quantity. They contain a replaceable (hot swap) battery that keeps a
)DES key in memory all the time. The admin programs the key into it -- so you
)don't rely on someone else to key your authentication device.
)        It's fairly solid, not especially attractive, but it uses an algorithm
)someone published a few years back, that's easy to implement in software, so
)you can avoid host-software licensing, portability, and availability issues.
)        It's one of the authentication devices the TIS firewall toolkit
)supports -- we have a server-side implementation that requires no additional
)software, so you can just buy 'em and key 'em and issue 'em to users.

)mjr.

   Digital Pathways also offers a client SSNK (Software Secure Net Key)
   for DOS and Mac OSs (I believe they're working on a UNIX client).  It's
   a more convenient implmentation of the cryptographic authentication
   calculator (SNK) if you tend to loose or forget the calculator hardware.

   Ron Martin
   Hughes Aircraft




Follow-Ups:
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From: Brent Chapman <brent @ mycroft . GreatCircle . COM>
Next: Minimalist 'telnet' wanted (was: Mixing Authentification Strategies)
From: plarkin @ iphase . com (Patrick Larkin Jr)
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From: Marcus J Ranum <mjr @ tis . com>
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From: fahnoe @ loki . ncent . mccaw . com (Larry Fahnoe)

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