Decrypt given data previously encoded with id-aes256-GCM cipher algo. AES with 256-bit key size in GCM (Galois/Counter Mode), offering authenticated encryption with excellent performance and parallelization capabilities. AES-256-GCM is widely adopted in modern cryptographic protocols like TLS, offering strong security and efficient performance. AES-256-GCM is highly secure and regarded as one of the most efficient and reliable modes of encryption available. 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.