diff --git a/sea_transport.pro b/sea_transport.pro
index 5a2f590..4ec32c5 100644
--- a/sea_transport.pro
+++ b/sea_transport.pro
@@ -20,6 +20,7 @@ SOURCES += \
     main.cpp \
     storageeditdialog.cpp \
     system/apparatus.cpp \
+    system/auth_system.cpp \
     usereditdialog.cpp \
     vesseleditdialog.cpp
 
@@ -36,6 +37,7 @@ HEADERS += \
     entities/vessel_entity.h \
     storageeditdialog.h \
     system/apparatus.h \
+    system/auth_system.h \
     usereditdialog.h \
     vesseleditdialog.h
 
diff --git a/system/auth_system.cpp b/system/auth_system.cpp
new file mode 100644
index 0000000..e7432c1
--- /dev/null
+++ b/system/auth_system.cpp
@@ -0,0 +1,56 @@
+#include "auth_system.h"
+
+
+const user_entity& auth_system::get_user(const QString &login, bool &success) {
+    user_entity *out;
+
+    success = false;
+    for (user_entity &item : this->_users) {
+        if (item.login() == login) {
+            success = true;
+            out = &item;
+            break;
+        }
+    }
+
+    return *out;
+}
+
+bool auth_system::remove_user(const QString &login) {
+    auto vit = this->_users.begin();
+    for (; vit != this->_users.end(); vit++) {
+        if ((*vit).login() == login) {
+            this->_users.erase(vit);
+            return true;
+        }
+    }
+
+    return false;
+}
+
+bool auth_system::register_user(const QString &login, const QString &password, UserRole role) {
+    bool exists = false;
+    this->get_user(login, exists);
+    if (!exists) {
+        this->_users.push_back(user_entity(login, password, role));
+        return true;
+    }
+
+    return false;
+}
+
+void auth_system::init(QDataStream &stream) {
+    int icnt;
+    stream >> icnt;
+    this->_users.resize(icnt);
+    for (int i = 0; i < icnt; i++) {
+        this->_users[i].deserialize(stream);
+    }
+}
+
+void auth_system::shutdown(QDataStream &stream) {
+    stream << this->_users.size();
+    for (auto &item : this->_users) {
+        item.serialize(stream);
+    }
+}
diff --git a/system/auth_system.h b/system/auth_system.h
new file mode 100644
index 0000000..9e442d5
--- /dev/null
+++ b/system/auth_system.h
@@ -0,0 +1,24 @@
+#ifndef AUTH_SYSTEM_H
+#define AUTH_SYSTEM_H
+
+#include<QVector>
+
+#include <entities/user_entity.h>
+
+
+class auth_system
+{
+private:
+    QVector<user_entity> _users;
+public:
+    auth_system() = default;
+
+    const user_entity& get_user(const QString &login, bool &success);
+    bool remove_user(const QString &login);
+    bool register_user(const QString &login, const QString &password, UserRole role);
+
+    void init(QDataStream &stream);
+    void shutdown(QDataStream &stream);
+};
+
+#endif // AUTH_SYSTEM_H