Encrypt given data using aes-192-ofb cipher algo. AES with 192-bit key in Output Feedback (OFB) mode, turning a block cipher into a synchronous stream cipher. Developed as an alternative to CFB, OFB ensures error propagation is minimized. Secure if used correctly, but susceptible to bit-flipping attacks if the IV is reused. Our encryption process prepends the IV string used during the encryption process in the encrypted data so that it can be used during decryption.