Decrypt given data previously encoded with aes256-wrap cipher algo. AES-256 in key wrapping mode, designed for encrypting cryptographic keys. Provides confidentiality and integrity for key management. Secure for key management. 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.