Certificate files with the .crt extension are commonly distributed by certificate authorities for certain types of digital certificates. However, Microsoft Windows, Nokia Symbian and some other operating systems require DER X.509 encoded .cer certificate files. This tutorial demonstrates the conversion of these certificates on a Windows 7/Vista device for compatibility with these platforms.
This tutorial is designed to allow James Cook University students to connect to Walkabout wireless from a Symbian S60 3rd Edition device. Large parts of this tutorial may also apply to other Symbian versions. However, this has only been tested on an S60 3rd Edition Device. It requires some intermediate level computer experience, though even some users with only basic experience with computers should be able to accomplish this with no issues provided they follow the tutorial step-by-step.