Add `HomeServer.signing_key` property (#7805)

... instead of duplicating `config.signing_key[0]` everywhere

1 files changed, 1 insertions, 1 deletions

diff --git a/synapse/events/builder.py b/synapse/events/builder.py

index a0c4a40c27..92aadfe7ef 100644
--- a/synapse/events/builder.py
+++ b/synapse/events/builder.py
@@ -162,7 +162,7 @@ class EventBuilderFactory(object):
     def __init__(self, hs):
         self.clock = hs.get_clock()
         self.hostname = hs.hostname
-        self.signing_key = hs.config.signing_key[0]
+        self.signing_key = hs.signing_key
 
         self.store = hs.get_datastore()
         self.state = hs.get_state_handler()