Decrypt given data previously encoded with aes-256-cfb cipher algo. AES with 256-bit key in Cipher Feedback (CFB) mode, enabling stream encryption with self-synchronizing properties. Designed for efficient streaming encryption while retaining block cipher security properties. Secure with proper IV use, but not as commonly used as GCM or CTR in modern implementations. Our decryption process assumes the IV string is prepended in the encoded string during the encryption process. You can not decrypt and get the correct results if the IV or passphrase mismatch occurs between encryption and decryption process.