in reply to
Re: checksum of subroutine
in thread checksum of subroutine
A hacker can replace needed bits in a file, then add other bits so that the overall file checksum stays valid. Doing that gets quantum if you have to hack the subroutines and file checksums.
As for RecDescent, if I could get at the text of a sub I could parse the sub and checksum it myself. The trick is to get at the text of the subroutine. That is where the question lies. Parse::RecDescent needs something like "$text", where $text is the text of the subroutine. You cannot hand it just a coderef. :-)