Decrypt given data previously encoded with aes-256-ctr cipher algo. AES with 256-bit key in Counter (CTR) mode, which turns a block cipher into a highly parallelizable stream cipher. Became popular for its performance benefits and resistance to padding oracle attacks. Highly secure when a unique nonce is used for each encryption, making it a preferred choice for modern cryptographic applications. 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.