diff --git a/src/auth.rs b/src/auth.rs
index 7d38afd..1a1eb51 100644
--- a/src/auth.rs
+++ b/src/auth.rs
@@ -82,8 +82,8 @@ pub struct ServerPadlockGenerator {
 }
 
 impl ServerPadlockGenerator {
-    pub fn new(/* secret */) -> Self {
-        todo!()
+    pub fn new(secret: PadlockGenerationSecret) -> Self {
+        Self { secret }
     }
 
     #[instrument]
@@ -99,8 +99,14 @@ pub struct UserServerKeyGenerator {
 }
 
 impl UserServerKeyGenerator {
-    pub fn new(/* UserAuthenticator, ServerPadlockGenerator? */) -> Self {
-        todo!()
+    pub fn new(
+        user_authenticator: Arc<UserAuthenticator>,
+        padlock_generator: Arc<ServerPadlockGenerator>,
+    ) -> Self {
+        Self {
+            user_authenticator,
+            padlock_generator,
+        }
     }
 
     #[instrument]