Simon Spero <ses@tipper.oit.unc.edu> writes:

Well, if you're using RC4, you're probably using some sort of public-key based key exchange, which you're probably going to need to licence, and BSAFE is the easiest way to do that, so RC4 is pretty much a freebie

If the Diffie-Hellmann patent covers all kind of public key crypto, you need a license from Cylink, i.e. BSAFE is not enough, and if it doesn't you can use El Gamal without a license.