Decrypt given data previously encoded with aria-256-cfb8 cipher algo. ARIA with a 256-bit key in CFB8 mode, a variant of CFB that processes one byte at a time. Part of the ARIA family of encryption algorithms. Secure but not as widely adopted as other ciphers. 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.