Introduce vanguards-lite subsystem and some of its entry points

Co-authored-by: Mike Perry <mikeperry-git@torproject.org>
2024-12-06 19:41:15 +01:00 · 2021-07-01 17:42:34 +03:00
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+  o Major features (Proposal 332, onion services, guard selection algorithm):
+    - Clients and onion services now choose four long-lived "layer 2" guard
+      relays for use as the middle hop in all onion circuits.  These relays are
+      kept in place for a randomized duration averaging 1 week each. This
+      mitigates guard discovery attacks against clients and short-lived onion
+      services such as OnionShare. Long-lived onion services that need high
+      security should still use the Vanguards addon
+      (https://github.com/mikeperry-tor/vanguards). Closes ticket 40363;
+      implements proposal 332.