diff --git a/accounting/views.py b/accounting/views.py
index 321ac29..14cdb3e 100644
--- a/accounting/views.py
+++ b/accounting/views.py
@@ -23,6 +23,7 @@ from django.http import HttpResponseRedirect, HttpResponse
 
 from django.urls import reverse
 from django.utils import dateformat, timezone
+from django.utils.decorators import method_decorator
 from django.views import generic
 from django.views.decorators.http import require_GET
 
@@ -30,10 +31,12 @@ from accounting.models import Record
 from accounting.utils import PeriodParser, Pagination, \
     PageNoOutOfRangeError
 from mia import settings
+from mia_core.digest_auth import digest_login_required
 from mia_core.utils import UrlBuilder
 
 
 @require_GET
+@digest_login_required
 def home(request):
     """The accounting home page.
 
@@ -45,6 +48,7 @@ def home(request):
 
 
 @require_GET
+@digest_login_required
 def cash_home(request):
     """The accounting cash report home page.
 
@@ -58,6 +62,7 @@ def cash_home(request):
         reverse("accounting:cash", args=(subject_code, period_spec)))
 
 
+@method_decorator(digest_login_required, name='dispatch')
 class BaseReportView(generic.ListView):
     """A base account report.
 
@@ -115,7 +120,6 @@ class BaseReportView(generic.ListView):
         return r
 
 
-
 class CashReportView(BaseReportView):
     """The accounting cash report."""
     http_method_names = ["get"]
diff --git a/mia_core/digest_auth.py b/mia_core/digest_auth.py
index 6eeaae1..12c8c52 100644
--- a/mia_core/digest_auth.py
+++ b/mia_core/digest_auth.py
@@ -18,6 +18,10 @@
 """The utilities for the HTTP digest authentication.
 
 """
+from functools import wraps
+
+from django.http import HttpResponse
+
 from mia_core.models import User
 
 
@@ -52,3 +56,19 @@ class AccountBackend:
         print("mia_core.digest_auth.AccountBackend.get_user(): " + str(User.objects.filter(
             login_id=username).first()))
         return User.objects.filter(login_id=username).first()
+
+
+def digest_login_required(function=None):
+    """The decorator to check if the user has logged in, and send
+    HTTP 401 if the user has not logged in.
+    """
+    def decorator(view_func):
+        @wraps(view_func)
+        def _wrapped_view(request, *args, **kwargs):
+            if request.user.is_anonymous:
+                return HttpResponse(status=401)
+            return view_func(request, *args, **kwargs)
+        return _wrapped_view
+    if function:
+        return decorator(function)
+    return decorator