Decrypt given data previously encoded with aria-256-cfb1 cipher algo. ARIA with a 256-bit key in CFB1 mode. Developed for flexible encryption schemes within ARIA's design. Secure but less common and slower compared to other ARIA modes. Our decryption process assumes the IV string is prepended in the encoded string during the encryption process. You can not decrypt and get the correct results if the IV or passphrase mismatch occurs between encryption and decryption process.