SecurePasteBox is a lightweight and secure application for one-time sharing of encrypted messages. Secrets are encrypted entirely in the browser and never transmitted to the server in plain text.
- Client-side encryption using AES-GCM
- The server stores only a one-time key, which is deleted after the first read
- The encrypted message is embedded in the URL fragment and never reaches the server
- Minimal interface with dark theme and orange accent
- Docker-ready for easy deployment
docker build -t securepastebox .
docker run -p 8080:80 securepasteboxThen open: http://localhost:8080
Pages/– static frontend (HTML, JS, Pico CSS)Program.cs– minimal .NET backend with key APIIKeysManager– interface for key storage (e.g., in-memory, Redis)
MIT