diff --git a/auth-server/.idea/auth-server.iml b/auth-server/.idea/auth-server.iml
new file mode 100644
index 0000000..5e764c4
--- /dev/null
+++ b/auth-server/.idea/auth-server.iml
@@ -0,0 +1,9 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<module type="WEB_MODULE" version="4">
+  <component name="Go" enabled="true" />
+  <component name="NewModuleRootManager">
+    <content url="file://$MODULE_DIR$" />
+    <orderEntry type="inheritedJdk" />
+    <orderEntry type="sourceFolder" forTests="false" />
+  </component>
+</module>
\ No newline at end of file
diff --git a/auth-server/.idea/modules.xml b/auth-server/.idea/modules.xml
new file mode 100644
index 0000000..0d210f3
--- /dev/null
+++ b/auth-server/.idea/modules.xml
@@ -0,0 +1,8 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<project version="4">
+  <component name="ProjectModuleManager">
+    <modules>
+      <module fileurl="file://$PROJECT_DIR$/.idea/auth-server.iml" filepath="$PROJECT_DIR$/.idea/auth-server.iml" />
+    </modules>
+  </component>
+</project>
\ No newline at end of file
diff --git a/auth-server/.idea/vcs.xml b/auth-server/.idea/vcs.xml
new file mode 100644
index 0000000..6c0b863
--- /dev/null
+++ b/auth-server/.idea/vcs.xml
@@ -0,0 +1,6 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<project version="4">
+  <component name="VcsDirectoryMappings">
+    <mapping directory="$PROJECT_DIR$/.." vcs="Git" />
+  </component>
+</project>
\ No newline at end of file
diff --git a/auth-server/.idea/workspace.xml b/auth-server/.idea/workspace.xml
new file mode 100644
index 0000000..9134ce5
--- /dev/null
+++ b/auth-server/.idea/workspace.xml
@@ -0,0 +1,72 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<project version="4">
+  <component name="AutoImportSettings">
+    <option name="autoReloadType" value="ALL" />
+  </component>
+  <component name="ChangeListManager">
+    <list default="true" id="e3f0a465-a988-41b5-9bcb-ad398db442cd" name="Changes" comment="" />
+    <option name="SHOW_DIALOG" value="false" />
+    <option name="HIGHLIGHT_CONFLICTS" value="true" />
+    <option name="HIGHLIGHT_NON_ACTIVE_CHANGELIST" value="false" />
+    <option name="LAST_RESOLUTION" value="IGNORE" />
+  </component>
+  <component name="FileTemplateManagerImpl">
+    <option name="RECENT_TEMPLATES">
+      <list>
+        <option value="Go File" />
+      </list>
+    </option>
+  </component>
+  <component name="GOROOT" url="file://C:/Program Files/Go" />
+  <component name="Git.Settings">
+    <option name="RECENT_GIT_ROOT_PATH" value="$PROJECT_DIR$/.." />
+  </component>
+  <component name="ProjectColorInfo"><![CDATA[{
+  "associatedIndex": 2
+}]]></component>
+  <component name="ProjectId" id="2alecWwpf6uMZpd5axUuAAT9sJP" />
+  <component name="ProjectLevelVcsManager">
+    <ConfirmationsSetting value="1" id="Add" />
+  </component>
+  <component name="ProjectViewState">
+    <option name="hideEmptyMiddlePackages" value="true" />
+    <option name="showLibraryContents" value="true" />
+  </component>
+  <component name="PropertiesComponent"><![CDATA[{
+  "keyToString": {
+    "DefaultGoTemplateProperty": "Go File",
+    "RunOnceActivity.ShowReadmeOnStart": "true",
+    "RunOnceActivity.go.formatter.settings.were.checked": "true",
+    "RunOnceActivity.go.migrated.go.modules.settings": "true",
+    "RunOnceActivity.go.modules.automatic.dependencies.download": "true",
+    "RunOnceActivity.go.modules.go.list.on.any.changes.was.set": "true",
+    "WebServerToolWindowFactoryState": "false",
+    "git-widget-placeholder": "auth-server",
+    "go.import.settings.migrated": "true",
+    "last_opened_file_path": "D:/frostfs/neowolves"
+  }
+}]]></component>
+  <component name="RunManager">
+    <configuration name="go build server.go" type="GoApplicationRunConfiguration" factoryName="Go Application" temporary="true" nameIsGenerated="true">
+      <module name="auth-server" />
+      <working_directory value="$PROJECT_DIR$" />
+      <kind value="FILE" />
+      <package value="auth-server" />
+      <directory value="$PROJECT_DIR$" />
+      <filePath value="$PROJECT_DIR$/server.go" />
+      <method v="2" />
+    </configuration>
+    <recent_temporary>
+      <list>
+        <item itemvalue="Go Build.go build server.go" />
+      </list>
+    </recent_temporary>
+  </component>
+  <component name="SpellCheckerSettings" RuntimeDictionaries="0" Folders="0" CustomDictionaries="0" DefaultDictionary="application-level" UseSingleDictionary="true" transferred="true" />
+  <component name="TypeScriptGeneratedFilesManager">
+    <option name="version" value="3" />
+  </component>
+  <component name="VgoProject">
+    <settings-migrated>true</settings-migrated>
+  </component>
+</project>
\ No newline at end of file
diff --git a/auth-server/server.go b/auth-server/server.go
index 8ddd9b8..976fd40 100644
--- a/auth-server/server.go
+++ b/auth-server/server.go
@@ -17,6 +17,7 @@ type BlockchainStorage interface {
 	GetByID(ctx context.Context, id string) (oauth2.ClientInfo, error) // read
 	Set(id string, cli oauth2.ClientInfo) (err error)                  // create and update
 	Delete(id string) (err error)                                      // delete
+	CheckPassword(id, password string) (bool, error)                   // CheckUser
 }
 
 func main() {