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- Newsgroups: sci.crypt
- Path: sparky!uunet!utcsri!torn!nott!cunews!csi.uottawa.ca!news
- From: cbbrowne@csi.uottawa.ca (Christopher Browne)
- Subject: Re: A Copper Balloon
- Message-ID: <1992Nov9.213013.20970@csi.uottawa.ca>
- Sender: news@csi.uottawa.ca
- Nntp-Posting-Host: prgg
- Organization: Dept. of Computer Science, University of Ottawa
- References: <1992Nov7.142220.1683@guvax.acc.georgetown.edu> <1dm50cINNcse@transfer.stratus.com>
- Date: Mon, 9 Nov 92 21:30:13 GMT
- Lines: 53
-
- In article <1dm50cINNcse@transfer.stratus.com> cme@ellisun.sw.stratus.com (Carl Ellison) writes:
- >In article <1992Nov7.142220.1683@guvax.acc.georgetown.edu> denning@guvax.acc.georgetown.edu writes:
- >>I'd like to suggest another possibility, which for want of a
- >>better name I'll call the "copper balloon". It's quite clear that key
- >>registration goes over like a "lead balloon". My question is: is this
- >>any better? worse? I would also like to suggest that we keep this
- >>thread focused on this proposal and not on the merits/demerits of
- >>wiretapping in general.
- >
- >One way to separate this conversation from privacy in general is to view
- >the copper balloon as a proposal for a nationwide, encrypted voice and data
- >service. In this plan, the phone companies would provide encrypting wired
- >phones, cellular phones and modems using the 3-way DH key exchange which
- >Dorothy proposes. These phones (due to volume production) would be cheap
- >enough that all business and many personal phones would use encryption.
- >The encryption, meanwhile, would be high quality: 1000+ bit DH, 3-fold
- >DES-CBC (with a full 360 bits of key).
- >
- >This has the advantage of cutting down on industrial espionage.
- >
- >This undercuts companies like Cylink or Racal-Guardata -- doesn't put them
- >out of business because you would need their current products to provide
- >privacy even from the Gov't -- but you would presumably take away from them
- >the business of people who just want to avoid non-gov't espionage.
- >
- >
- >So: what if the entire national communications infrastructure were
- >well encrypted? People could add their own encryption, of course,
- ^^^^^^^^^^ (+)
- >but most wouldn't. Most are lazy or don't see the need.
-
- Having a system of this sort would probably be acceptable to people,
- with the IMPORTANT caveat that people ARE permitted to add their own
- encryption.
-
- That "of course" that you put in there (+) is a VERY important one;
- those that want private communications legislated out of private hands
- rephrase it "of course NOT."
-
- There are a couple of little problems with the system:
-
- - While it may eliminate problems of industrial espionage and the
- likes, it doesn't eliminate governmental espionage. This is pretty
- much a given, and IF extra encryption may be added, the "problem"
- probably CAN get eliminated.
-
- - People may trust it too much. It DOES have a big weakness in that
- government CAN break it.
- --
- Christopher Browne | PGP 2.0 key available
- cbbrowne@csi.uottawa.ca |===================================
- University of Ottawa | The Personal Computer: Colt 45
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