微信支付成功后，回调给的ciphertext，associated_data，nonce，然后拿着三个参数进行解密，

function decryptData(ciphertext, nonce, associatedData) {

const key = Buffer.from(merchantApiKey, 'utf-8');

if (key.length !== 32) {

throw new Error('密钥长度必须为 32 字节');

}

const decipher = crypto.createDecipheriv('aes-256-gcm', key, Buffer.from(nonce, 'utf-8'));

decipher.setAAD(Buffer.from(associatedData, 'utf-8'));

let decrypted = '';

try {

decrypted += decipher.update(Buffer.from(ciphertext, 'base64'), undefined, 'utf-8');

decrypted += decipher.final('utf-8');

} catch (err) {

console.error('解密失败:', err.message);

return null; // 或处理错误

}

return decrypted; // 返回解密后的字符串

}

一直报错，所有参数都是 微信返回的，apiv3也确认是正确的，目前不知道问题出现在哪，报错内容为Unsupported state or unable to authenticate data