From e11d43d1f8e3c4ce9702c0ba9917ce9828d37b6e Mon Sep 17 00:00:00 2001
From: Matthew Chen <matthew@signal.org>
Date: Tue, 30 Oct 2018 13:29:42 -0400
Subject: [PATCH] Respond to CR.

---
 SignalServiceKit/src/Messages/UD/OWSUDManager.swift | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/SignalServiceKit/src/Messages/UD/OWSUDManager.swift b/SignalServiceKit/src/Messages/UD/OWSUDManager.swift
index 65a4eb7a7..23b3dcf2b 100644
--- a/SignalServiceKit/src/Messages/UD/OWSUDManager.swift
+++ b/SignalServiceKit/src/Messages/UD/OWSUDManager.swift
@@ -274,6 +274,8 @@ public class OWSUDManagerImpl: NSObject, OWSUDManager {
 
         let accessMode = unidentifiedAccessMode(forRecipientId: recipientId)
         if accessMode == .unrestricted {
+            // Unrestricted users should use a derived key if possible,
+            // and fall back to a random key otherwise.
             if let udAccessKey = udAccessKey(forRecipientId: recipientId) {
                 if isUDVerboseLoggingEnabled() {
                     Logger.info("UD Send enabled for \(recipientId) with unverified key.")