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-From eay@mincom.com Thu Jun 27 00:25:45 1996
-Received: by orb.mincom.oz.au id AA15821
-  (5.65c/IDA-1.4.4 for eay); Wed, 26 Jun 1996 14:25:45 +1000
-Date: Wed, 26 Jun 1996 14:25:45 +1000 (EST)
-From: Eric Young <eay@mincom.oz.au>
-X-Sender: eay@orb
-To: Ken Toll <ktoll@ren.digitalage.com>
-Cc: Eric Young <eay@mincom.oz.au>, ssl-talk@netscape.com
-Subject: Re: Unidentified subject!
-In-Reply-To: <9606261950.ZM28943@ren.digitalage.com>
-Message-Id: <Pine.SOL.3.91.960626131156.28573K-100000@orb>
-Mime-Version: 1.0
-Content-Type: TEXT/PLAIN; charset=US-ASCII
-Status: O
-X-Status: 
-
-
-This is a little off topic but since SSLeay is a free implementation of
-the SSLv2 protocol, I feel it is worth responding on the topic of if it 
-is actually legal for Americans to use free cryptographic software.
-
-On Wed, 26 Jun 1996, Ken Toll wrote:
-> Is the U.S the only country that SSLeay cannot be used commercially 
-> (because of RSAref) or is that going to be an issue with every country 
-> that a client/server application (non-web browser/server) is deployed 
-> and sold?
-
->From what I understand, the software patents that apply to algorithms 
-like RSA and DH only apply in the USA.  The IDEA algorithm I believe is 
-patened in europe (USA?), but considing how little it is used by other SSL 
-implementations, it quite easily be left out of the SSLeay build
-(this can be done with a compile flag).
-
-Actually if the RSA patent did apply outside the USA, it could be rather
-interesting since RSA is not alowed to let RSA toolkits outside of the USA
-[1], and since these are the only forms that they will alow the algorithm
-to be used in, it would mean that non-one outside of the USA could produce
-public key software which would be a very strong statment for
-international patent law to make :-).  This logic is a little flawed but
-it still points out some of the more interesting permutations of USA
-patent law and ITAR restrictions. 
-
-Inside the USA there is also the unresolved issue of RC4/RC2 which were
-made public on sci.crypt in Sep 1994 (RC4) and Feb 1996 (RC2).  I have
-copies of the origional postings if people are interested.  RSA I believe 
-claim that they were 'trade-secrets' and that some-one broke an NDA in 
-revealing them.  Other claim they reverse engineered the algorithms from 
-compiled binaries.  If the algorithms were reverse engineered, I belive 
-RSA had no legal leg to stand on.  If an NDA was broken, I don't know.
-Regardless, RSA, I belive, is willing to go to court over the issue so 
-licencing is probably the best idea, or at least talk to them.
-If there are people who actually know more about this, pease let me know, I 
-don't want to vilify or spread miss-information if I can help it.
-
-If you are not producing a web browser, it is easy to build SSLeay with
-RC2/RC4 removed. Since RC4 is the defacto standard cipher in 
-all web software (and it is damn fast) it is more or less required for 
-www use. For non www use of SSL, especially for an application where 
-interoperability with other vendors is not critical just leave it out.
-
-Removing IDEA, RC2 and RC4 would only leave DES and Triple DES but 
-they should be ok.  Considing that Triple DES can encrypt at rates of
-410k/sec on a pentium 100, and 940k/sec on a P6/200, this is quite 
-reasonable performance.  Single DES clocks in at 1160k/s and 2467k/s
-respectivly is actually quite fast for those not so paranoid (56 bit key).[1]
-
-> Is it possible to get a certificate for commercial use outside of the U.S.?
-yes.
-
-Thawte Consulting issues certificates (they are the people who sell the
-	Sioux httpd server and are based in South Africa)
-Verisign will issue certificates for Sioux (sold from South Africa), so this
-	proves that they will issue certificate for OS use if they are
-	happy with the quality of the software.
-
-(The above mentioned companies just the ones that I know for sure are issuing
- certificates outside the USA).
-
-There is always the point that if you are using SSL for an intra net, 
-SSLeay provides programs that can be used so you can issue your own 
-certificates.  They need polishing but at least it is a good starting point.
-
-I am not doing anything outside Australian law by implementing these
-algorithms (to the best of my knowedge).  It is another example of how 
-the world legal system does not cope with the internet very well.
-
-I may start making shared libraries available (I have now got DLL's for 
-Windows).  This will mean that distributions into the usa could be 
-shipped with a version with a reduced cipher set and the versions outside 
-could use the DLL/shared library with all the ciphers (and without RSAref).
-
-This could be completly hidden from the application, so this would not 
-even require a re-linking.
-
-This is the reverse of what people were talking about doing to get around 
-USA export regulations :-)
-
-eric
-
-[1]:	The RSAref2.0 tookit is available on at least 3 ftp sites in Europe
-	and one in South Africa.
-
-[2]:	Since I always get questions when I post benchmark numbers :-),
-	DES performace figures are in 1000's of bytes per second in cbc 
-	mode using an 8192 byte buffer.  The pentium 100 was running Windows NT 
-	3.51 DLLs and the 686/200 was running NextStep.
-	I quote pentium 100 benchmarks because it is basically the
-	'entry level' computer that most people buy for personal use.
-	Windows 95 is the OS shipping on those boxes, so I'll give
-	NT numbers (the same Win32 runtime environment).  The 686
-	numbers are present as an indication of where we will be in a
-	few years.
---
-Eric Young                  | BOOL is tri-state according to Bill Gates.
-AARNet: eay@mincom.oz.au    | RTFM Win32 GetMessage().
-
-