Patching strong name .NET assembly

[jjhsd]

Thank you for your reply.

I have checked this article. However I don't think it's gonna to be helpful, as the program has used some obfuscator. I wish i could patching the binary file without recompiling it from MSIL.

I just found a solution to problem a). So b) will be the only remaining problem. after I patched the file and tried to resign them with my own key pair, the application doesn't run any more. U_U
Actually i think this problem is quite generally. There will be more and more applications written in .NET in the future, and strong name assemblies will be one of the most common things to be implemented as part of software's secutires.