All Symbian applications must be signed before they can be installed. All applications which use capability-protected APIs, where the capability cannot be granted by the end user, have to be certified. Such certification can be obtained through Symbian Signed.
Signing is a means of encoding a digital certificate into the application installation file. The certificate identifies the application’s vendor, and grants access to capabilities defined during the build process.
The signing process is described in detail on the Symbian Signed website.
If your application only needs user capabilities (LocalServices, NetworkServices, ReadUserData, WriteUserData, UserEnvironment, andLocation), you can self-sign the application.
Note: When the end users are installing a self-signed application, they are informed that the application is untrusted and may decide to abort the installation. In Nokia E-series devices the user must change a setting to allow self-signed applications to install.
Sign the sis installation file with any private key. You can use the MakeKeys application
to create the needed private key and, for example, SignSIS to
sign the application. Both applications are delivered with the SDK.
For more information, see How to sign a .Sis file with Self-Sign Certificate in the
Nokia Developer Community Wiki.
For other signing options available with the Symbian Signed program see Symbian Signed.