Encrypt given data using rc2-64-cbc cipher algo. RC2 with a 64-bit key size in CBC mode, chaining blocks of ciphertext to improve security compared to ECB mode. This mode of RC2 was used for secure encryption in legacy systems but is outdated and insecure by current standards. RC2-64-CBC is not recommended for use due to weaknesses in the RC2 algorithm, even with CBC mode. Our encryption process prepends the IV string used during the encryption process in the encrypted data so that it can be used during decryption.