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Miễn phí Text Encryption

Encrypt and decrypt text with a password using strong AES-256-GCM. The password never leaves your browser. Share secrets safely.

Runs in your browserNo sign-up, no pop-upsKhông cần đăng nhậpMiễn phí mãi mãiAES-256-GCM

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.

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Cách hoạt động

Send a secret over an insecure channel (email, chat) by encrypting it with a password only you and the recipient know. This uses the same strong, standard cryptography as password managers — running entirely in your browser.

1
You enter text and a password
Nothing is uploaded; the password is never stored or transmitted.
2
A key is derived from your password
PBKDF2 stretches your password with 250,000 SHA-256 iterations and a fresh random salt, making brute-force attacks slow.
3
The text is encrypted with AES-256-GCM
A random IV is used each time, and GCM adds an authentication tag so tampering (or a wrong password) is detected on decryption.
4
You share the encrypted text
Send the base64 result over any channel, and the password separately. The recipient pastes both here to decrypt.

All cryptography runs locally with the browser's native Web Crypto. The plaintext and password never leave your device. If the password is lost, the message is unrecoverable — that's the point.