The following is details:
The version of the OS is symbian7.0.
The application is the example of symbian's HelloWorld(I don't know that whether it has been signed or not).Its path is \Symbian\UIQ_21\examples\ToolsAndUtilities\Install.
In this folder,I can find HelloWorldSecure.pkg file.
Then ExamplesReadMe.txt said that this .pkg(HelloWorldSecure.pkg) file demonstrates the use of a package signature for secure installation. A key and certificate must be generated before creation of the .sis file using the Certification Generator.
Of course,I can find helloworld.cer and HelloWorld.key in this folder.So in MS-Dos window,type the following command:
A few seconds later,HelloWorldSecure.sis has been generated .Install the HelloWorldSecure.sis,the Symbian OS Installation System
gives the message:Component failed security check.Cannot install.
could you please tell me,why is it and how I can do?