Symmetric Encryption
Encrypt and decrypt text with a password using AES-GCM for encryption workflow testing.
FreeBrowserAbout Symmetric Encryption
Encrypt text with a password using AES-GCM and a derived key, or decrypt a payload generated by this tool. The portable JSON holds the encryption parameters needed for a later decryption.
When to use this tool
- Experiment with password-based authenticated encryption.
- Create a portable encrypted text payload for a controlled workflow.
Limits to know before using it
Only this tool payload format is supported. Lost passwords cannot be recovered here; weak passwords remain vulnerable even with a strong encryption algorithm.
Data handling and cost
The main operation runs in your browser; tool input is not uploaded for processing. The site can still use session cookies and collect operational or usage data as described in the privacy policy.
Free to use in your browser, with no sign-in needed.
Frequently Asked Questions
No. Encryption, decryption, key derivation, and random salt/IV generation all run locally with the browser Web Crypto API.
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.
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.