Encrypt given data using aes-192-cfb cipher algo. AES with 192-bit key in Cipher Feedback (CFB) mode, which converts block cipher into a self-synchronizing stream cipher. Introduced as part of the AES standard, CFB mode allows partial block encryption and is useful for streaming data. Secure if used with a proper initialization vector (IV), but less commonly used than AES-256 variants. Our encryption process prepends the IV string used during the encryption process in the encrypted data so that it can be used during decryption.