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- Newsgroups: sci.crypt
- Path: sparky!uunet!cs.utexas.edu!sun-barr!ames!network.ucsd.edu!qualcom.qualcomm.com!servo.qualcomm.com!karn
- From: karn@servo.qualcomm.com (Phil Karn)
- Subject: Re: Encryption/Decryption of Voice signals via normal phone line
- Message-ID: <1992Dec29.021257.11996@qualcomm.com>
- Sender: news@qualcomm.com
- Nntp-Posting-Host: servo.qualcomm.com
- Organization: Qualcomm, Inc
- References: <1hnth3INNjd3@usenet.INS.CWRU.Edu>
- Date: Tue, 29 Dec 1992 02:12:57 GMT
- Lines: 27
-
- In article <1hnth3INNjd3@usenet.INS.CWRU.Edu> bz223@cleveland.Freenet.Edu (Danny Guy Frezza) writes:
- > I read about a week or so ago from USA Electronic edition of
- >"Telecomunication", that phones in Europe (Cellular) were going to have
- >encrypt/decrypt device in them. I was wondering what the state of affairs
- >in US are concerning this possibility for us
-
- Unfortunately, thanks to NSA meddling, the cause of meaningful voice
- privacy over cellular telephones is lost in the US. The "encryption
- standard" that won out for IS-54B digital cellular is essentially the
- same laughable XOR-with-a-fixed-key scheme that is frequently
- mentioned here with regard to toy encryption packages for the PC.
-
- That was the most the NSA would allow for export. Considering where
- most cellular phones are made these days, a non-exportable algorithm
- was not acceptable even for a US-only standard.
-
- Now the IS-54B *authentication* scheme is much better, though not
- perfect. But then again the NSA doesn't really care about
- authentication, and the carriers and vendors who are writing the spec
- care a lot more about protecting their revenue stream than their
- customers' privacy.
-
- Phil
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