I have a web service running at network solutions. I have created a method which returns a asymmetric public key. Durring that process when I call the method I receive the following message

"Server was unable to process request. ---> Request for the permission of type 'System.Security.Permissions.KeyContainerPermission, mscorlib, Version=2.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089' failed."

I'm not too conversed in security, can someone help

Regards