Hello! The NSS FAQ is wrong in one point: http://www.mozilla.org/projects/security/pki/nss/faq.html#q1.2a It says that an advantage of NSS over OpenSSL is that NSS supports S/MIME. However, OpenSSL _does_ support S/MIME, though at the moment only S/MIMEv2. I do not know if it supports PKCS#11.
