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[REBOL] Re: Shamless request for improving function speed.

From: holger:rebol at: 26-Mar-2002 17:22

On Tue, Mar 26, 2002 at 04:57:41PM -0800, Holger Kruse wrote:
> On Tue, Mar 26, 2002 at 03:05:09PM -0500, alan parman wrote: > > This group is really good at tweaking functions to make them faster. > > This is a shameless request for help making the following functions _faster_. > > {not necessarily shorter, just faster :)} > > > > Any help would be deeply appreciated. > > > > The second set (object) is a REBOL version of Ron Rivest's (formerly of RSA) RC4 encryption algorithm, used in some secure internet transactions. > > Please do not post source code for cryptographic functions to the mailing > list. This list is hosted in the US and some subscribers are outside of > the US, so posting source code constitutes a violation of US export laws > on cryptography.
Btw, there is another problem, specifically with RC4: AFAIR RSADSI still considers that algorithm to be their trade secret, and the name "RC4" is trademarked. Because of that this particular algorithm should not be discussed publically. You can, however discuss publically (just discuss, not post source code) a different algorithm, called ARCFOUR, which is assumed to be compatible with RC4. ARCFOUR is implemented by a lot of software packages (OpenSSL etc.) as a compatible replacement for RC4 (e.g. for SSL). ARCFOUR is also supported by REBOL/Command 2.0. -- Holger Kruse [kruse--nordicglobal--com]