How to set up encrypted e-mail on OS X

O’Reilly’s MacDevCenter has published a detailed tutorial on how to set up secure e-mail signing and reading under Mac OS X. “The latest version of Apple’s Mail app, included with the Panther upgrade, supports S/MIME security and encryption. But how do you go about getting a certificate and taking advantage of this feature? François Joseph de Kermadec shows you how, step-by-step.”