In this blog post I will cover the steps to create a key file to sign a MP for SCSM. You will need an install of Visual Studio. If you don’t have a license for the full version of visual studio you can down an express version http://www.microsoft.com/visualstudio/eng/products/visual-studio-express-products. Once you have Visual Studio installed you need to open the Developer Command Prompt.
Type “sn –k <Filename.snk>”
Save this key file for future use with the SCSM Authoring tool.