How to update INI file signatures

If you want to make changes that involve editing the INI files and you're not an NI-approved developer for the Project Provider Framework, you probably won't know how to re-sign the INI files. Thankfully the "signature" here is really more of a checksum, consisting of an MD5 hash with a couple modifications applied, and can therefore be replaced without needing access to any kind of carefully-guarded NI private key.

The method by which the signature is calculated is described in this forum post. Said post also contains a C# program, including source and binaries, to automatically sign or re-sign a PPF INI file.