diff --git a/src/or/main.c b/src/or/main.c
index 9f3306dc4f..d7cd701a0f 100644
--- a/src/or/main.c
+++ b/src/or/main.c
@@ -57,6 +57,7 @@
 #include "routerlist.h"
 #include "routerparse.h"
 #include "scheduler.h"
+#include "shared_random.h"
 #include "statefile.h"
 #include "status.h"
 #include "util_process.h"
@@ -2441,6 +2442,13 @@ do_main_loop(void)
     cpu_init();
   }
 
+  /* Setup shared random protocol subsystem. */
+  if (authdir_mode_publishes_statuses(get_options())) {
+    if (sr_init(1) < 0) {
+      return -1;
+    }
+  }
+
   /* set up once-a-second callback. */
   if (! second_timer) {
     struct timeval one_second;
@@ -3204,6 +3212,9 @@ tor_cleanup(void)
       accounting_record_bandwidth_usage(now, get_or_state());
     or_state_mark_dirty(get_or_state(), 0); /* force an immediate save. */
     or_state_save(now);
+    if (authdir_mode(options)) {
+      sr_save_and_cleanup();
+    }
     if (authdir_mode_tests_reachability(options))
       rep_hist_record_mtbf_data(now, 0);
     keypin_close_journal();
@@ -3362,6 +3373,7 @@ sandbox_init_filter(void)
   OPEN_DATADIR_SUFFIX("cached-extrainfo.new", ".tmp");
   OPEN_DATADIR("cached-extrainfo.tmp.tmp");
   OPEN_DATADIR_SUFFIX("state", ".tmp");
+  OPEN_DATADIR_SUFFIX("sr-state", ".tmp");
   OPEN_DATADIR_SUFFIX("unparseable-desc", ".tmp");
   OPEN_DATADIR_SUFFIX("v3-status-votes", ".tmp");
   OPEN_DATADIR("key-pinning-journal");
@@ -3414,6 +3426,7 @@ sandbox_init_filter(void)
   RENAME_SUFFIX("cached-extrainfo", ".new");
   RENAME_SUFFIX("cached-extrainfo.new", ".tmp");
   RENAME_SUFFIX("state", ".tmp");
+  RENAME_SUFFIX("sr-state", ".tmp");
   RENAME_SUFFIX("unparseable-desc", ".tmp");
   RENAME_SUFFIX("v3-status-votes", ".tmp");