Re: symmetric algorithms

EKR (ekr@rtfm.com)
19 Dec 1998 18:07:02 -0800

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Bruce Schneier <schneier@counterpane.com> writes:
> Be careful; that's misleading. Some of us believe that RC4 is in the
> public domain, but RSADSI still maintains that it is proprietary. RC5 and
> RC6 are patented, and definitely not in the public domain. RC2 is heading
> towards the public domain, but I do not believe it is there yet.
RC2 has been legitimately published:
RFC 2268 A Description of the RC2(r) Encryption Algorithm. R. Rivest.
     January 1998. (Format: TXT=19048 bytes) (Status: INFORMATIONAL)

So it's public domain.

> There is
> no such thing as RC1 and RC3 (at least in public).
I seem to remember hearing somewhere that they've been broken.

-Ekr

-- 
[Eric Rescorla                                   ekr@rtfm.com]

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