How to aes-256-gcm encrypt files in your browser
- Step 1Drop your file and enter a passphrase — Upload any file and choose a passphrase of 8+ characters.
- Step 2Encrypt — PBKDF2 derives the key locally; AES-GCM encrypts the file with a random IV.
- Step 3Download the .aes blob — Save the encrypted file. Decrypting requires the same tool with your passphrase.
Frequently asked questions
What if I forget my passphrase?+
There is no recovery. JAD has no access to your keys or files. Choose a memorable passphrase or store it in a password manager.
Is AES-256-GCM safe from quantum?+
Symmetric AES-256 retains ~128-bit effective security against Grover's algorithm — currently considered safe through 2030+.
Can I share encrypted files?+
Yes. Send the .aes file and the passphrase via separate channels (e.g., file via email, passphrase via Signal).
Privacy first
Every JAD Security operation runs entirely in your browser. Files, passwords, and PGP private keys never leave your device — verified by zero outbound network requests during processing.