AES: 16/24/32 bytes recommended; auto-padded to 16 bytes if shorter
Initialization Vector (IV)Required for CBC mode; leave empty for fixed IV
Output Format
Encrypted Result
Key Length Notes:AES: 16/24/32 bytes (128/192/256 bits); DES: 8 bytes; 3DES: 24 bytes.
Auto-padded with0when shorter, truncated when longer. CBC mode requires IV and is more secure than ECB. Note:Key, algorithm, mode, and format must match exactly, or decryption will fail.