No. Then I wouldn't know who screwed me. At least I know where Mike C (Casc..us) lives.

...and furthermore I don't believe that is technically possible. A public elliptic key is derived from a private key. Two entities can not (according to my wildest imagination) produce a secret unknown to either of them and derive something else from that which they do not know. It's like Diffie-Hellman with a major step removed from the calculus.