Decrypt given data previously encoded with aria-256-cfb cipher algo. ARIA with a 256-bit key in CFB (Cipher Feedback) mode. ARIA's suite of modes was developed by KISA. Secure but less efficient compared to other block cipher modes like CTR. 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.