RE: RC4 license

Bob,

The SFL_README.TXT file that accompanies the v1.7 SFL source code states:

4) smR17CTI.zip:  Source code for the following CTILs: Test (no 
crypto), Crypto++, BSAFE, Fortezza, SPEX/ and PKCS #11.  The 
Win95/98/NT/2000 projects are also included.  (NOTE: The Free (a.k.a. 
Crypto++) CTIL includes WGSI-developed source code to use the RSA 
public key algorithm implemented within the external Crypto++ library.  
As with all of the external crypto token libraries, the Crypto++ 
library is not distributed as part of the SFL source code.  To use the 
Crypto++ library with the SFL, the application developer must 
independently obtain the Crypto++ library from the Crypto++ Web Page 
<http://www.eskimo.com/~weidai/cryptlib.html> and then compile it with 
the WGSI-developed Crypto++ CTIL source code.  The RSA public key 
algorithm is covered by U.S. Patent 4,405,829 "Cryptographic 
Communication System and Method".  Within the U.S., users of the RSA 
public key algorithm provided by the external Crypto++ library must 
obtain a license from RSA granting them permission to use the RSA 
algorithm.)

I have been told by reliable sources that Patent 4,405,829 expires on 20
September 2000.

============================================
John Pawling, [email protected]
Wang Government Services, Inc.,
A Getronics Company
============================================ 


-----Original Message-----
From: Bob Smith [mailto:[email protected]]
Sent: Thursday, August 24, 2000 2:42 PM
To: [email protected]
Subject: RC4 license



I am planning to commercially release a program that uses SFL. Do I have to 
buy a license from RSA to use the RC2 and RC4 algorithms found in the 
crypto32 library?

Bob
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