From http://www.jwz.org/xscreensaver/xscreensaver-5.23.tar.gz

-rw-r--r-- 1 zblaxell zblaxell 8040800 Nov 10 20:11 xscreensaver-5.23.tar.gz
7ed2bf03f84a1e379ce1eca6cd9b587fb98e66cc  xscreensaver-5.23.tar.gz