Learn How Encryption Works

See real AES-256-GCM encryption in action.

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Text to encrypt

Password

Strong, standard encryption: AES-256-GCM with a key derived from your password via PBKDF2 (250,000 iterations, SHA-256). Each message uses a fresh random salt and IV.

The password is never stored or sent anywhere — everything runs in your browser. If you lose the password, the message cannot be recovered. Share the encrypted text and the password through separate channels.

learning tips

🎓

Encrypt the same text twice — the output differs each time because of the random salt and IV.

🔬

A wrong password fails to decrypt rather than producing garbage, thanks to GCM authentication.

🧩

The output is base64 of salt + IV + ciphertext — a common real-world layout.

🔒

Experiment freely — nothing is uploaded.

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Ewch i mewn

Enter your data into the tool above. Everything stays local to your browser.

Proses

The tool processes your data instantly in your browser using JavaScript. No server, no waiting.

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Get your result instantly. Nothing is stored after you leave the page — complete privacy.

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🤝

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Cwestiynau Cyffredin

Back to Text Encryption