How to secure your e-mail under Mac OS X and iOS 5 with S/MIME
From Keychain Access, you can then also export the certificate as a password-protected .p12 file for installation on your iOS device. The proper way to do that is probably using the iPhone Configuration Utility, but mailing the file to yourself—or storing it in a draft mail message on the mail server—is a lot simpler. Opening the file will make iOS install the certificate. In my case, it said the cert was untrusted at first, for reasons that I couldn’t determine.
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Great name by the way. Also: new website design. ↩