Re: Streams, Voice, and Sensitive Dependence

http://www.starium.com 14.4 modem, awsome sound quality, 2048 bit DH, 3DES.
The web site is pretty sparse. No wonder I couldn't find them before - I was looking for "Starion" a while back. I'll call them next week - they're practically local. What's the approximate price? I have another question for you: I thought I was a real whiz kid a few years back when I figured out that by using an agreed upon startup key then using a "random" public/private key pair generated by the SW, two voice stations could exchange a "random" session key. With thumbscrews and the rack you could not get the session key. Even the dreaded rubber hose would fail. The startup key protected the PK. The ultimate security was as good as the PK portion. The conversation was practically pre-shredded. I was bummed when I discovered this had already been patented and was called EKE. Does the Starium phone accomplish this effect? Mike

On Fri, 4 Dec 1998, Michael Motyka wrote:
http://www.starium.com 14.4 modem, awsome sound quality, 2048 bit DH, 3DES.
The web site is pretty sparse. No wonder I couldn't find them before - I was looking for "Starion" a while back. I'll call them next week - they're practically local. What's the approximate price?
The company used to be called Comsec. http://www.comsec.com/ They've expanded and are working on the next revision of the product. The old version was $750 each. The new version will be a lot less expensive. When you call, ask for Eric Blossom. (831) 333-9393 x12
I have another question for you:
I thought I was a real whiz kid a few years back when I figured out that by using an agreed upon startup key then using a "random" public/private key pair generated by the SW, two voice stations could exchange a "random" session key. With thumbscrews and the rack you could not get the session key. Even the dreaded rubber hose would fail. The startup key protected the PK. The ultimate security was as good as the PK portion. The conversation was practically pre-shredded.
I was bummed when I discovered this had already been patented and was called EKE.
Does the Starium phone accomplish this effect?
Starium's current generation phone encryption device, the GSP8191, performs a 2048 bit DH key exchange to establish a 3DES session key. Each party then reads out half of the hash. If the hashes match, you know that you are not subject to an MIM attack. The system has perfect forward secrecy. Thumb screws will have no effect. :-) -- Lucky Green <shamrock@cypherpunks.to> PGP v5 encrypted email preferred.

On Fri, 4 Dec 1998, Michael Motyka wrote:
http://www.starium.com 14.4 modem, awsome sound quality, 2048 bit DH, 3DES.
The web site is pretty sparse. No wonder I couldn't find them before - I was looking for "Starion" a while back. I'll call them next week - they're practically local. What's the approximate price?
The company used to be called Comsec. http://www.comsec.com/ They've expanded and are working on the next revision of the product. The old version was $750 each. The new version will be a lot less expensive. When you call, ask for Eric Blossom. (831) 333-9393 x12
While I was explaining the GSP8191's features to an engineer a few weeks back he ask whether anyone had thought of how to do secure conferencing via analog technology. I've never seen such a device. I wonder if such a thing is practical given the limitations of modem protocols. Certainly one could use a specialized digital device to join the clear analog channels, but then you have to all trust this device and that's not been compromised (anothre MITM). --Steve
participants (3)
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Lucky Green
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Michael Motyka
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Steve Schear