โ Frequently Asked Questions โ Text Encryptor
What encryption algorithm does this tool use?
This tool uses AES-256-GCM (Advanced Encryption Standard with a 256-bit key in Galois/Counter Mode). GCM provides both encryption and authenticated integrity checking โ it detects if the encrypted data was tampered with. The encryption key is derived from your password using PBKDF2 with 100,000 SHA-256 iterations and a random salt, making brute-force attacks computationally infeasible.
Can I decrypt the text on a different device?
Yes. The encrypted output is self-contained โ it includes the salt and IV needed for decryption. As long as you have the encrypted text and the correct password, you can decrypt it using this tool on any device. The decryption runs entirely in the browser using the Web Crypto API, so it works on any modern browser without installing anything.
What happens if I use the wrong password?
AES-256-GCM includes authentication. If you enter the wrong password, decryption will fail and you will see an error message โ the tool will not produce garbled text. This authentication also means you can detect if the encrypted text was tampered with. If decryption fails, double-check your password โ remember it is case-sensitive.
Is my text sent to any server?
No. Everything runs in your browser using the built-in Web Crypto API. No data, text, or passwords ever leave your device. The page does not make any network requests during encryption or decryption. You can even disconnect from the internet after loading the page and it will continue to work perfectly.