Encrypt given data using rc2-cbc cipher algo. RC2 in CBC (Cipher Block Chaining) mode, improving security by chaining ciphertext blocks together. This was an improvement over the base RC2 algorithm, though still considered weak by today's cryptographic standards. RC2-CBC is considered weak and is unsuitable for use in modern applications. Our encryption process prepends the IV string used during the encryption process in the encrypted data so that it can be used during decryption.