Decrypt given data previously encoded with aria256 cipher algo. ARIA with a 256-bit key. Part of ARIA's full suite, designed to offer strong encryption for sensitive data. Highly secure, considered one of the best options among ARIA variants. 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.