Actually, this repo isn't integral. There is a project called VisualAssist-patcher in my computer which can replace official public key stored in VA_X.dll with our own public key, so that the registration key generated by VisualAssist-keygen can really work.
However, I don't want to receive a DMCA takedown notice. Also I don't want to let Whole Tomato, the developer of Visual Assist, figure out an anti-patch solution for Visual Assist.