Rivest on the Design of RC4

[Wei Dai]

>         Professor Ron Rivest will be presenting a talk titled
> "The Design of RC4" at the RSA Data Security Conference in San Francisco
> (January 17 to 19).  It should be interesting.

What will the legal status of RC4 be after this talk?  Will RSADSI stop 
claiming that RC4 is still protected as a trade secret, or will everyone 
attending the talk be required to sign NDAs?

Wei Dai