CryptoFileExchange

A C#/.NET desktop application (WinForms) for exchanging files using cryptographic operations.

Repo: dusanvelickovic/CryptoFileExchange

What's in this repository

At a high level, the repo contains:

• WinForms UI entry points:
  • Program.cs
  • Form1.cs (+ Form1.Designer.cs, Form1.resx)
• Project/solution files:
  • CryptoFileExchange.csproj
  • CryptoFileExchange.slnx
• Code organized into folders:
  • Algorithms/ – cryptographic algorithm implementations/helpers
  • Models/ – DTOs / domain models
  • Services/ – application services (crypto, file operations, etc.)
  • UI/ – additional UI components/forms
  • Tests/ – tests

Requirements

• Windows (WinForms)
• .NET SDK (recommended: latest LTS)

Build & Run

From the repository root:

dotnet restore
dotnet build
dotnet run

Or open the solution/project in Visual Studio and run the WinForms app.

Testing

If the Tests/ project is configured:

dotnet test

Usage (high-level)

1. Launch the application.
2. Select/prepare a file to exchange.
3. Choose the cryptographic option/algorithm (if exposed in the UI).
4. Perform the operation (encrypt/sign/etc.) and share the resulting file as needed.

Note: The exact workflow depends on what options are exposed in Form1 and under UI/.

Security notes

• Treat this as a learning/demo project unless you have reviewed the cryptography carefully.
• Prefer modern primitives and authenticated encryption modes.
• Avoid reusing keys/IVs and ensure secure random generation.

Contributing

PRs and issues are welcome. If you plan to contribute:

• Keep changes small and focused
• Add/adjust tests when changing crypto logic
• Update this README when behavior changes

License

No license file is currently included in the repository.
If you want this to be open-source, add a LICENSE file (MIT/Apache-2.0/GPL/etc.).