--- cups-1.1.21rc1/pdftops/XRef.cxx.can-2005-0064	2005-01-21 16:46:18.796931418 -0700
+++ cups-1.1.21rc1/pdftops/XRef.cxx	2005-01-21 16:48:23.591086803 -0700
@@ -527,6 +527,12 @@
 	} else {
 	  keyLength = 5;
 	}
+	if (keyLength < 1) {
+	  keyLength = 1;
+	}
+	if (keyLength > 16) {
+	  keyLength = 16;
+	}
 	permFlags = permissions.getInt();
 	if (encVersion >= 1 && encVersion <= 2 &&
 	    encRevision >= 2 && encRevision <= 3) {