I've written a few Perl routines for public-key cryptography. I'd like to freely disseminate the source code (starting with ElGamal) to as many people as I can, It's my understanding that there are two orthogonal restrictions: 1) ITAResque: I can't give code to non-U.S. citizens. 2) PKPesque: Using public-key crypto is an infringement, although disseminating/possessing the source code is not. While I'm sure these are oversimplifications, it would seem that I can release my source code over the Internet provided I install a simple verification mechanism (cf. MIT's PGP distribution) to ensure that only people claiming to be U.S. citizens have access privileges. Am I correct? If so, why aren't more people doing this? Jon Orwant MIT Media Lab orwant@media.mit.edu