CryptSecure Demo

Back to CryptSecure CryptSecure v2.6.0 · Interactive Demo
Interactive Demo

See Quantum-Safe Encryption in Action

Drop a message and a file below, then watch CryptSecure build a quantum-safe envelope — layer by layer. This is exactly what happens inside the real app on your Windows device.

No data leaves your browser · No tracking · Pure visualization

Your Message
Attach a File (Max 1 MB)

Click or drop a file here

Any file type · Up to 1 MB

Encryption Stage

● Idle

Enter a message and (optionally) attach a file, then click Build Secure Envelope to see the encryption flow.

01Bundle
02AES-256
03RSA Wrap
04ML-KEM
05Envelope

This is a visual demonstration. Real CryptSecure encryption runs entirely offline on your Windows device with the same NIST-standardized algorithms.

What just happened?

The Five Steps to a Quantum-Safe Envelope

Each layer adds a distinct kind of protection. Together they produce a single encrypted file that’s safe to send through any channel.

1

Bundle

Your message and attached files are packaged together as one plaintext bundle.

2

AES-256-GCM

The bundle is encrypted with a fresh random AES-256 key — authenticated, tamper-evident.

3

RSA-4096

The AES key is wrapped with classical RSA-OAEP — the proven workhorse of today’s encryption.

4

ML-KEM-1024

A post-quantum layer is added — NIST FIPS 203 algorithm resistant to future quantum attacks.

5

Envelope

Everything is sealed into one secure envelope file. Only the recipient’s private key can open it.

Ready to Try the Real Thing?

CryptSecure runs entirely offline on Windows 10/11. Free forever.

Windows 10/11 · No account needed · 100% Offline

Or download the previous version (v2.4.3) →