Sign dlls without compiling

We should use Microsoft intermediate language Disassembler (Ildasm) tool to sing the dlls. 

Download .Net Framework 2.0 from Microsoft if you don't already have it. Please 

follow below step to sign the dlls.

Step 1: Deassemble your dlls

Open a Visual Studio Command Prompt and type the following command

C:\>ildasm /all /out= YourAssemblyName.il YourAssemblyName.dll

This will create a file YourAssemblyName.il which will be used next to sign and build.

Step 2: Rebuild and Sign the YourAssemblyName.dll

Rename or backup your original assembly.We need strong name key for sing the dll.

So you can use existing key(.snk) or Create new strong name key.The following 

command will be creates a key pair called sgKey.snk

C:\>sn -k sgKey.snk

Now.It’s read to sign the Assembly using strong name key (sgKey.snk)

C:\>ilasm /dll /key= sgKey.snk YourAssemblyName.il

Step 3: Verify assembly was signed

We should verify whether the assembly singed properly or not. Use below to check the

sing status

sn -vf YourAssemblyName.dll

The output should be like below.

Assembly YourAssemblyName.dll' is valid