diff --git a/CMakeLists.txt b/CMakeLists.txt
index f0ed330..660e793 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -45,6 +45,9 @@ add_executable(App ./src/main.cpp
                    ./src/endpoints_handlers/IExecutor.h
                    ./src/endpoints_handlers/AuthRegistrationExecutor.h
                    ./src/endpoints_handlers/RootExecutor.h
+        src/DAO/IAuthDAO.h
+        src/DAO/MemoryAuthDAO.cpp
+        src/DAO/MemoryAuthDAO.h
 )
 
 target_link_libraries(App PRIVATE Boost::boost Boost::json Threads::Threads mysql::concpp)
diff --git a/src/DAO/IAuthDAO.h b/src/DAO/IAuthDAO.h
new file mode 100644
index 0000000..eccea50
--- /dev/null
+++ b/src/DAO/IAuthDAO.h
@@ -0,0 +1,21 @@
+#pragma once
+
+#include <cstdint>
+
+
+#include "../entities/User.h"
+
+namespace uad
+{
+class IAuthDAO
+{
+public:
+  virtual std::string Login(const std::string& registrated_user_uuid) = 0;
+
+  virtual bool HasAuthorizedUser(const std::string& auth_token) = 0;
+
+  virtual bool Logout(const std::string& user_token) = 0;
+
+  virtual ~IAuthDAO() = default;
+};
+}
diff --git a/src/DAO/IUserDAO.h b/src/DAO/IUserDAO.h
index 51b576c..991ff8c 100644
--- a/src/DAO/IUserDAO.h
+++ b/src/DAO/IUserDAO.h
@@ -1,7 +1,8 @@
+#pragma once
+
 #include <cstdint>
 #include <vector>
 #include <optional>
-#pragma once
 
 #include "../entities/User.h"
 
diff --git a/src/DAO/MemoryAuthDAO.cpp b/src/DAO/MemoryAuthDAO.cpp
new file mode 100644
index 0000000..b6aaa44
--- /dev/null
+++ b/src/DAO/MemoryAuthDAO.cpp
@@ -0,0 +1,41 @@
+#include <boost/uuid.hpp>
+
+#include "MemoryAuthDAO.h"
+
+using namespace std;
+
+namespace  uad
+{
+MemoryAuthDAO::MemoryAuthDAO(mysqlx::Session& session): session_(session)
+{
+}
+
+std::string MemoryAuthDAO::Login(const std::string& registrated_user_uuid)
+{
+  boost::uuids::random_generator generator;
+  boost::uuids::uuid uuid = generator();
+  std::string auth_token = boost::uuids::to_string(uuid);
+
+  users_uuids_to_auth_tokens_[registrated_user_uuid] = auth_token;
+  auth_tokens_to_users_uuids_[auth_token] = registrated_user_uuid;
+
+  return auth_token;
+}
+
+bool MemoryAuthDAO::HasAuthorizedUser(const std::string& auth_token)
+{
+  return auth_tokens_to_users_uuids_.count(auth_token) > 0;
+}
+
+bool MemoryAuthDAO::Logout(const std::string& auth_token)
+{
+  string user_uuid = auth_tokens_to_users_uuids_[auth_token];
+
+  if (!HasAuthorizedUser()) return false;
+
+  users_uuids_to_auth_tokens_.erase(user_uuid);
+  auth_tokens_to_users_uuids_.erase(auth_token);
+
+  return true;
+}
+}
diff --git a/src/DAO/MemoryAuthDAO.h b/src/DAO/MemoryAuthDAO.h
new file mode 100644
index 0000000..919350d
--- /dev/null
+++ b/src/DAO/MemoryAuthDAO.h
@@ -0,0 +1,28 @@
+#pragma once
+
+#include <vector>
+#include <string>
+#include <unordered_map>
+
+#include <mysqlx/xdevapi.h>
+
+#include "IAuthDAO.h"
+
+namespace uad
+{
+class MemoryAuthDAO : public uad::IAuthDAO
+{
+  std::unordered_map<std::string, std::string> users_uuids_to_auth_tokens_;
+  std::unordered_map<std::string, std::string> auth_tokens_to_users_uuids_;
+
+  mysqlx::Session& session_;
+public:
+  explicit MemoryAuthDAO(mysqlx::Session& session);
+
+  std::string Login(const std::string& registrated_user_uuid) override;
+
+  bool HasAuthorizedUser(const std::string& auth_token) override;
+
+  bool Logout(const std::string& auth_token) override;
+};
+}