diff --git a/inc/integretychecker.h b/inc/integretychecker.h
index 04f9334..080cd74 100644
--- a/inc/integretychecker.h
+++ b/inc/integretychecker.h
@@ -13,7 +13,9 @@ public:
   bool saveKeyFile(const std::string &app);
   bool generateKeyPair();
 
-  std::string loadHashList(const std::string &hashList);
+  std::string loadHashList(const std::string &app);
+  void saveHashList(const std::string &app, const std::string &hashList);
+
   std::string generateHashList(const std::string &app);
   std::string generateFileHash(const std::string &filepath);
 
diff --git a/src/integretychecker.cpp b/src/integretychecker.cpp
index efb19a3..f95e2ac 100644
--- a/src/integretychecker.cpp
+++ b/src/integretychecker.cpp
@@ -156,3 +156,22 @@ bool IntegretyCheck::verifyHashList(const std::string &signedHashList) {
 
   return result;
 }
+
+std::string IntegretyCheck::loadHashList(const std::string &app) {
+  std::stringstream content;
+  fs::path appPath(app);
+  std::ifstream in(appPath / HASH_FILE, std::ios::in | std::ios::binary);
+  if (in) {
+    content << in.rdbuf();
+    in.close();
+  }
+  return content.str();
+}
+
+void IntegretyCheck::saveHashList(const std::string &app,
+                                  const std::string &hashList) {
+  fs::path appPath(app);
+  std::ofstream out(appPath / HASH_FILE);
+  out << hashList;
+  out.close();
+}