Add pepper to password hashing

Signed-off-by: Kent Shikama <kent@kentshikama.com>

1 files changed, 3 insertions, 2 deletions

diff --git a/synapse/handlers/auth.py b/synapse/handlers/auth.py
index 968095c141..fd5fadf73d 100644
--- a/synapse/handlers/auth.py
+++ b/synapse/handlers/auth.py
@@ -750,7 +750,7 @@ class AuthHandler(BaseHandler):
         Returns:
             Hashed password (str).
         """
-        return bcrypt.hashpw(password, bcrypt.gensalt(self.bcrypt_rounds))
+        return bcrypt.hashpw(password + self.hs.config.password_config.pepper, bcrypt.gensalt(self.bcrypt_rounds))
 
     def validate_hash(self, password, stored_hash):
         """Validates that self.hash(password) == stored_hash.
@@ -763,6 +763,7 @@ class AuthHandler(BaseHandler):
             Whether self.hash(password) == stored_hash (bool).
         """
         if stored_hash:
-            return bcrypt.hashpw(password, stored_hash.encode('utf-8')) == stored_hash
+            return bcrypt.hashpw(password + self.hs.config.password_config.pepper,
+                                 stored_hash.encode('utf-8')) == stored_hash
         else:
             return False