How can I codesign an app without being in the mac developer program?

Question

When I try the following:

mba:Utilities ryan$ sudo codesign -fs /Applications/Utilities/Boot\\ Camp\\ Assistant.app/

I get this error:

Answer 1

Although I can't understand why you are trying to resign the Boot Camp Assistant, you can use the codesign tool with a self-signed CA and identity.

Apple has steps to do so in their developer documentation TN2206: OS X Code Signing In Depth.