Encrypt given data using des-ede3-ofb cipher algo. Triple DES (DES-EDE3) in OFB (Output Feedback) mode, converting the block cipher into a stream cipher by using a feedback loop. OFB mode with Triple DES was introduced to handle streams of data efficiently, providing a secure method for encrypting smaller chunks. Triple DES (EDE3) in OFB mode is more secure than ECB but still suffers from performance issues and is considered outdated compared to newer algorithms. Our encryption process prepends the IV string used during the encryption process in the encrypted data so that it can be used during decryption.