我试图弄清楚如何为用户生成基于时间的令牌，以访问存储在Azure存储帐户Blob容器中的数据。用户上载了各种数据（PDF，图像），但我不想公开此数据的链接。推荐的策略是使用SAS令牌，我可以使用大约一年前在MS网站上发现的以下功能使它在.Net下工作：

        //Function for getting a temporary Azure SAS 
        public static string GetazureSASToken(string userhashid,int minutes)
        {

            //Get Azure SAS Token so we can allow them to temporarily view the photos 
            UploadedFileInfo uploadedfileinfo = new UploadedFileInfo();

            //Azure User containter must be all lowercase!!
            uploadedfileinfo.usercontainer = "user-" + userhashid;
            uploadedfileinfo.azureurl = Configurationmanager.AppSettings["AzureURL"].ToString() + uploadedfileinfo.usercontainer + "/";


            // Retrieve storage account from connection string.
            string azureconnection = CloudConfigurationmanager.GetSetting("StorageConnectionString");

            CloudStorageaccount storageaccount = CloudStorageaccount.Parse(azureconnection);

            CloudBlobClient client = storageaccount.CreatecloudBlobClient();
            CloudBlobContainer blobContainer = client.getcontainerReference(uploadedfileinfo.usercontainer);

            //Set the expiry time and permissions for the container.
            //In this case no start time is specified,so the shared access signature becomes valid immediately.
            SharedaccessBlobPolicy sasConstraints = new SharedaccessBlobPolicy();
            sasConstraints.SharedaccessExpiryTime = DateTimeOffset.UtcNow.AddMinutes(minutes);
            sasConstraints.Permissions = SharedaccessBlobPermissions.Read;

            //Generate the shared access signature on the container,setting the constraints directly on the signature.
            string sasContainerToken = blobContainer.GetSharedaccessSignature(sasConstraints);

            return sasContainerToken;

        }

问题是我现在需要从 Asp.Net Core 2.2 应用访问这些文件，而且我似乎无法弄清楚如何复制代码以获取令牌（Core库不同）

关于如何在.Net Core 2.2中实现此目标的任何建议？

谢谢！