diff --git a/.gitignore b/.gitignore
new file mode 100644
index 0000000..3c45826
--- /dev/null
+++ b/.gitignore
@@ -0,0 +1,19 @@
+# Виртуальное окружение
+venv/
+__pycache__/
+*.pyc
+*.pyo
+
+# IDE
+.vscode/
+.idea/
+
+# Результаты работы
+images/*_with_secret.png
+images/*_result.png
+secret.txt
+output.txt
+
+# OS
+.DS_Store
+Thumbs.db
\ No newline at end of file
diff --git a/core/__init__.py b/core/__init__.py
new file mode 100644
index 0000000..e69de29
diff --git a/core/dct.py b/core/dct.py
new file mode 100644
index 0000000..e69de29
diff --git a/core/lsb.py b/core/lsb.py
new file mode 100644
index 0000000..e69de29
diff --git a/core/utils.py b/core/utils.py
new file mode 100644
index 0000000..e69de29
diff --git a/gui/__init__.py b/gui/__init__.py
new file mode 100644
index 0000000..e69de29
diff --git a/gui/main_window.py b/gui/main_window.py
new file mode 100644
index 0000000..e69de29
diff --git a/main.py b/main.py
new file mode 100644
index 0000000..e69de29
diff --git a/requirements.txt b/requirements.txt
new file mode 100644
index 0000000..e69de29
diff --git a/tests/__init__.py b/tests/__init__.py
new file mode 100644
index 0000000..e69de29