[opensuse-security] Global check sum archive?

There are still many applications or projects on the net that do not offer any digital signature or any other kind of verification. I think this is true for both Open Source and MS Windows. E.g. some Linux video drivers from video vendors. No signature, no checksum. I wonder, is there somewhere a kind of "global check sum archive" where people upload file names and corresponding hash sums? IMHO this would greatly hinder fraud. Is there such a project? Haven´t found one so far... Thanks