diff -ur --unidirectional-new-file skipsrc-1.0.orig/certs/hashcert/dh_keygen.C skipsrc-1.0/certs/hashcert/dh_keygen.C
--- skipsrc-1.0.orig/certs/hashcert/dh_keygen.C	Fri Oct 25 13:11:37 1996
+++ skipsrc-1.0/certs/hashcert/dh_keygen.C	Mon Dec 15 16:57:05 1997
@@ -54,6 +54,8 @@
 
 #include <stdio.h>
 #include <stdlib.h>
+#include <unistd.h>
+#include <time.h>
 #include <sys/types.h>
 #include "Time.h"
 #include "Bigint.h"