100tools
SecurityBeta

Symmetric Encryption

Encrypt and decrypt local text with AES-GCM using a shared password.

AES-GCM 256-bit / PBKDF2 / local only

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Frequently Asked Questions

Does my text or password leave the browser?

No. Encryption, decryption, key derivation, and random salt/IV generation all run locally with the browser Web Crypto API.

What algorithm is used?

The tool uses AES-GCM with a 256-bit key derived from your password by PBKDF2-SHA-256. The generated JSON stores the salt, IV, iteration count, and ciphertext needed for decryption.

Can the payload be decrypted without the password?

No. The payload is designed to be portable, but the original password is still required. If the password is lost, the plaintext cannot be recovered by this tool.