RSAREF version 1.1 (and higher) has Diffie Helman key exchange in
it. I suggest you ftp this from rsa.com and try it.
-derek
Derek Atkins, SB '93 MIT EE, G MIT Media Laboratory
Secretary, MIT Student Information Processing Board (SIPB)
PGP key available from [email protected]
[email protected] PP-ASEL N1NWH