Cipher

AES-256-GCM · PBKDF2-SHA256 (600k iterations) · Web Crypto API · no dependencies · runs entirely in your browser

Passphrase (custom key)

Input (plaintext to cipher, or ciphered text to decipher)

Open file: loads a local .txt file into the input (max 5 MB).

Output

Format: ENC1.<base64 of salt + nonce + ciphertext + tag>. Keep the same passphrase to decipher.