RE: Rivest Patent

It's a little bit more complicated than that. RC-6, which also uses data dependant rotations is patent free. Harv.

-----Original Message----- From: Eric Cordian [mailto:emc@wire.insync.net] Sent: Friday, November 13, 1998 11:25 AM To: cypherpunks@cyberpass.net Subject: Re: Rivest Patent

JYA writes:

...

Ron Rivest received on November 10 "US Patent 5835600: Block encryption algorithm with data-dependent rotations:" http://jya.com/rivest111098.htm (22K)

So we can't use the rotate instruction with a data-dependent shift count in a block encryption algorithm without a license from Ron?

Foo on that.

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