diff --git a/src/auth.rs b/src/auth.rs
index db70723..8a50259 100644
--- a/src/auth.rs
+++ b/src/auth.rs
@@ -3,7 +3,7 @@ use futures::future::BoxFuture;
 
 use base64::decode as base64_decode;
 use tide::{
-    http::{response::Builder as ResponseBuilder, StatusCode},
+    http::{response::Builder as ResponseBuilder, StatusCode, HeaderValue},
     middleware::{Middleware, Next},
     Context, Response,
 };
@@ -49,27 +49,29 @@ impl SimplisticHTTPBasicAuth {
 
 impl<State: Send + Sync + 'static> Middleware<State> for SimplisticHTTPBasicAuth {
     fn handle<'a>(&'a self, cx: Context<State>, next: Next<'a, State>) -> BoxFuture<'a, Response> {
+        let credentials = cx.headers().get("Authorization").and_then(|value| {
+            let (_type, credentials) = parse_authorization(value)?;
+            if _type.eq_ignore_ascii_case("Basic") {
+                Some(String::from_utf8(base64_decode(credentials).ok()?).ok()?)
+            } else {
+                None
+            }
+        });
         Box::pin(async move {
-            let t = cx.headers().get("Authorization").and_then(|value| {
-                let authorization = value.to_str().ok()?;
-                let (_type, credentials) = {
-                    // A trailing space is expected to be in `t`.
-                    let (t, c) = authorization.split_at(authorization.find(' ')?);
-                    (t.trim(), c.trim())
-                };
-                if _type.eq_ignore_ascii_case("Basic") {
-                    Some(String::from_utf8(base64_decode(credentials).ok()?).ok()?)
-                } else {
-                    None
-                }
-            });
-            match t {
-                Some(ref credentials) if self.authenticate(credentials) => {
-                    trace!("An request is authenticated with {} .", credentials);
-                    next.run(cx).await
-                }
-                _ => self.unauthorized(),
+        match credentials {
+            Some(ref credentials) if self.authenticate(credentials) => {
+                trace!("An request is authenticated with {} .", credentials);
+                next.run(cx).await
             }
+            _ => self.unauthorized(),
+        }
         })
     }
 }
+
+fn parse_authorization(header_value: &HeaderValue) -> Option<(&str, &str)> {
+    let value = header_value.to_str().ok()?;
+    // A trailing space is expected to be in `t`.
+    let (_type, credentials) = value.split_at(value.find(' ')?);
+    Some((_type.trim(), credentials.trim()))
+}
\ No newline at end of file
diff --git a/src/main.rs b/src/main.rs
index e016b1e..72fa488 100644
--- a/src/main.rs
+++ b/src/main.rs
@@ -52,7 +52,9 @@ fn main() {
     let expiration_task = app_state.expire();
     let mut app = App::with_state(app_state);
     app.middleware(RequestLogger::new());
-    app.middleware(HTTPBasicAuth::new());
+    if OPT.is_auth_enabled() {
+        app.middleware(HTTPBasicAuth::new());
+    }
     app.at("/").get(handle_index);
     app.at("/assets/*path").get(handle_assets);
     app.at("/upload/start").post(handle_upload_start);
diff --git a/src/opt.rs b/src/opt.rs
index fdfb0b7..f398f1a 100644
--- a/src/opt.rs
+++ b/src/opt.rs
@@ -44,6 +44,10 @@ impl Opt {
         SocketAddr::new(self.ip_addr, self.port)
     }
 
+    pub fn is_auth_enabled(&self) -> bool {
+        return !self.auth_credentials.is_empty()
+    }
+
     pub fn credentials_match(&self, credentials: impl AsRef<str>) -> bool {
         let credentials = credentials.as_ref();
         self.auth_credentials.iter().any(|c| c == credentials)