How to digitally sign a DLL文件.

To digitally sign a DLL file, follow these steps:

1. To obtain a digital certificate, you first need to acquire it from a trusted Certificate Authority (CA) by purchasing one, or by using a self-signed certificate.
2. Prepare signing tool: In the Windows operating system, you can use the tool provided by Microsoft – signtool – to perform digital signatures. Make sure that Windows SDK or Visual Studio is already installed to access the signtool tool.
3. Use signtool to digitally sign the DLL file at the specified path with the certificate file, password, and timestamp server URL.
4. certificate file path
5. Certificate password
6. Timestamp server URL
7. File path of DLL
8. Verify the using signtool with the /pa and /v options.
9. “The file path of the DLL”
10. Deploying signature: Deploy the signed DLL file to the target system to ensure that the signature remains valid.

Please note that digital signatures can not only encrypt DLL files, but also verify the integrity and authenticity of the files, ensuring they are not tampered with or maliciously modified.