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- Newsgroups: sci.crypt
- Path: sparky!uunet!walter!qualcom.qualcomm.com!servo.qualcomm.com!karn
- From: karn@servo.qualcomm.com (Phil Karn)
- Subject: Re: Opinions on RSA's RC2 and RC4?
- Message-ID: <1992Dec22.213023.6850@qualcomm.com>
- Sender: news@qualcomm.com
- Nntp-Posting-Host: servo.qualcomm.com
- Organization: Qualcomm, Inc
- References: <1992Dec22.202631.25004@gallant.apple.com>
- Date: Tue, 22 Dec 1992 21:30:23 GMT
- Lines: 13
-
- In article <1992Dec22.202631.25004@gallant.apple.com> consensus@aol.com (Christopher Allen) writes:
- >Does anyone have an opinion on the technical merits of RC2 and RC4?
-
- Yeah. If NSA will let them out of the country, then they can't be very
- good at all. It's as simple as that.
-
- I understand that for export NSA limits the key sizes for RC2 and RC4
- to about 40 bits (although NSA doesn't want this fact generally
- known). It should be apparent that keys this small can be easily
- cracked by brute force on modern workstations, no matter how good the
- algorithms themselves might be with adequately large keys.
-
- Phil
-