Contact person: Business Client

Phone:Show

Email:Show

Location: Al Mansurah, Egypt

Budget: Recommended by industry experts

Time to start: As soon as possible

Project description:
"I need a small desktop application that can safely encrypt and decrypt plain .txt files using the AES standard—ideally AES-256 in CBC or GCM mode. A straightforward graphical interface is essential: just a field to choose the file, an optional field to set or paste the key / passphrase, and buttons for Encrypt and Decrypt.

The current scope is limited to .txt files, yet structuring the code so it could later be extended to CSV or JSON would be a plus. Good user-experience touches such as drag-and-drop support, progress feedback, and basic error handling (e.g., “incorrect key” messages) will be appreciated.

Deliverables:
• Executable GUI application
• Well-commented source code
• Brief read-me explaining build steps, key length used, and any external libraries

Acceptance criteria:
• A .txt file encrypted by the program must decrypt back to an identical original.
• No plaintext should ever be written to disk after encryption.
• Source and executable pass an antivirus / malware scan and run without admin rights on a standard Windows 10 machine (cross-platform compatibility is welcome but not required).

Please keep the tech stack at your discretion—Python (Tkinter/PyQt), C# (WPF), or Java (Swing/JavaFX) are all fine as long as it remains lightweight and easy to build." (client-provided description)