Compare both approaches
text = Hello
Result: Side-by-side comparison of key management and speed.
Symmetric vs Asymmetric Demo
EDUCATIONAL DEMONSTRATION ONLY — This demo shows both encryption approaches: symmetric (one shared key) and asymmetric (public/private key pair). Real systems combine both: asymmetric key exchange establishes a symmetric session key.
Privacy: this tool processes your data entirely in your browser. Nothing you paste or type is sent to the server.
Enter your values and press Calculate — the result appears here.
Worked examples
Frequently asked questions
Which is faster?
Symmetric encryption (AES) is 100-1000x faster than asymmetric (RSA). That is why real systems use hybrid encryption: asymmetric to exchange a symmetric key, then symmetric for the actual data.
How does TLS use both?
TLS handshakes use asymmetric encryption (RSA/ECDH) to establish a shared session key. The actual data transfer uses symmetric encryption (AES-GCM) for speed.
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