具有AES 256支持的HttpWebRequest [英] HttpWebRequest with AES 256 support

问题描述

我们有一个.net win表格应用程序，并从服务器下载配置文件.

我们要求仅支持TLS_RSA_WITH_AES_256_CBC_SHA256密码套件.

我们的应用程序使用客户端PC中可用的默认加密算法来启动与服务器的连接.

我可以限制我们的客户端组件仅支持TLS_RSA_WITH_AES_256_CBC_SHA256密码套件吗，因此，如果客户端不支持TLS_RSA_WITH_AES_256_CBC_SHA256密码套件，那么它将无法连接.

应用框架:.net 3.5

Windows支持的版本:Windows 7/8/10

We have a .net win forms application and downloading configuration files from server. 

We have a requirement to support only TLS_RSA_WITH_AES_256_CBC_SHA256 cipher suite.

Our application is using default encryption algorithms available in client PC to initiate connection with server.

Can i restrict our client component to support only TLS_RSA_WITH_AES_256_CBC_SHA256 cipher suite, So that if TLS_RSA_WITH_AES_256_CBC_SHA256 cipher suite is not supported by client then it should fail to connect.

Application framework : .net 3.5

Windows Versions to support : Windows 7/8/10

代码块

                    HttpWebRequest request = (HttpWebRequest)WebRequest.Create(_configFileUri);
                    request.Credentials = CredentialCache.DefaultCredentials;
                    request.UserAgent = "Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.2; .NET CLR 1.0.3705;)";
                    HttpWebResponse response = (HttpWebResponse)request.GetResponse();
                    Stream receiveStream = response.GetResponseStream();
                    StreamReader readStream = new StreamReader(receiveStream, Encoding.UTF8);
                    using (StreamWriter sw = new StreamWriter(fileName, false, Encoding.UTF8))
                    {
                        sw.Write(readStream.ReadToEnd());
                        sw.Flush();
                        sw.Close();
                    }

客户端和服务器密码套件:

Client and Server Cipher Suites :

推荐答案

只需禁用/删除服务器"的不需要的密码即可.按照知识库文章的指示 此处.本文底部包含有关更高版本Windows系统的信息.

Just disable/remove the unwanted ciphers for "server" as instructed by KB article here. The bottom of the article contains information for later Windows systems.

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