diff --git a/src/services/_authentication.rs b/src/services/_authentication.rs
index e6993fb..ffabea9 100644
--- a/src/services/_authentication.rs
+++ b/src/services/_authentication.rs
@@ -6,11 +6,11 @@ use cookie::{Cookie, CookieJar, Key};
 use rusqlite::Connection;
 
 #[derive(Clone)]
-pub struct SessionService {
-    key: Key,
+pub struct SessionService<'a> {
+    key: &'a Key,
 }
 
-impl SessionService {
+impl SessionService<'_> {
 
     pub fn get_key(conn: &mut Connection) -> CustomResult<Key> {
         let tx = conn.transaction().map_err(Error::SqlError)?;
@@ -18,16 +18,7 @@ impl SessionService {
         Ok(Key::derive_from(&secret))
     }
 
-    pub fn from_conn(conn: &mut Connection) -> CustomResult<SessionService> {
-        let tx = conn.transaction().map_err(Error::SqlError)?;
-        let secret = LedgerInternal::new().get_cookie_secret(&tx)?;
-        let ret = SessionService {
-            key: Key::derive_from(&secret),
-        };
-        Ok(ret)
-    }
-
-    pub fn from_key(key: Key) -> SessionService{
+    pub fn from_key(key: &Key) -> SessionService {
         SessionService{key}
     }
 
diff --git a/src/webui/services.rs b/src/webui/services.rs
index c41c111..5baefcd 100644
--- a/src/webui/services.rs
+++ b/src/webui/services.rs
@@ -40,7 +40,7 @@ impl ServicesFactory {
     }
 
     pub fn get_authentication_service(&self) -> Result<SessionService> {
-        Ok(SessionService::from_key(self.cache.session_service_key.clone()))
+        Ok(SessionService::from_key(& self.cache.session_service_key))
     }
 
     pub fn get_user_service<'a>(