About this Tool
AES (Advanced Encryption Standard) is a symmetric encryption algorithm adopted by the U.S. government and used worldwide for securing sensitive data. AES-256 uses a 256-bit key, providing extremely strong encryption. This tool implements AES in CBC (Cipher Block Chaining) mode with PBKDF2 key derivation, converting your passphrase into a secure encryption key. The output is Base64-encoded for easy storage and transmission.