Several emails to the list and private messages suggest that PGP should be used instead of S/MIME. We believe that either PGP or S/MIME could be used.
 
 
ICANN can accommodate either the PGP or the S/MIME solution. However, we believe we should only do one to avoid unnecessary complication.
 
The question is:
  • What is your preference?
 

PGP. 

Rubens