This project is a C++ application developed using the Qt framework. It allows users to encode files using an 8-byte (64-bit) key. The application supports selecting the type of file to encode, changing the saving format, and modifying the encoding key.

• File Type Selection: Choose the type of file you want to encode.
• Saving Format Options: Change the format in which the encoded file is saved.
• Key Management: Update and manage the 8-byte key used for encoding.

• Qt 5.x or higher
• C++17 or higher
• QMake for build configuration