Mail encryption on OSX and iphone/ipad

I'v been playing a bit with OpenPGP, and lots of plugins for different applications. PGP is very good product, but it has one big drawback, its not supported out of the box. Looks like S/MIME is the standard. Now also supported with ios5 :-)

I discovered a very simple and easy guide to configure S/MIME on osx and iphone/ipad. 

I choose to create a free certificate  at http://www.instantssl.com/ssl-certificate-products/free-email-certificate.html. Others are available, like versign etc. 

My only problem was importing the key on my ios devices. This worked for me: 

1. Follow this guide http://arstechnica.com/apple/guides/2011/10/secure-your-e-mail-under-mac-os-x-and-ios-5-with-smime.ars?comments=1&start=40#comments-bar to add the certificate to osx

2. Open Keychain Access
3. Click "My Certificates" at bottom left
4. Expand your new certificate, and choose both entries
5. Rigth click, and export 2 items as .p12
6. Send the file as email, or transfer the file securly to you ios device
7. Open the file on ios
8. Enable S/MIME for email
9. Enable S/MIME
      - Open settings mail - account - account - advanced - S/MIME
      - Enable signing ; choose the new cert 
      - Enable crypt ; choose the new cert

You are now able to send and receive encrypted email from osx and ios.