加密发布到 FTP 站点的文件

本文关键字：站点 文件 FTP 加密 | 更新日期: 2023-09-27 18:31:47

我正在使用VS 2010（C#）。我正在尝试加密（解密）从FTP站点上传（下载）的文件。 我认为这比使用本地临时文件在上传前加密并在下载后解密更快。 我在下面的代码上收到错误。 我似乎无法对齐各种流类型（即文件流、加密流和流）。 任何帮助都非常感谢。

public void Upload(byte[] desKey, byte[] desIV)
    {
        FtpWebRequest request = (FtpWebRequest)WebRequest.Create(Destination);
        request.Method = WebRequestMethods.Ftp.UploadFile;
        request.Credentials = new NetworkCredential(UserName, Password);
        FileStream fStream = File.Open(SourceFile, FileMode.OpenOrCreate);
        CryptoStream responseStream = new CryptoStream(fStream, new DESCryptoServiceProvider().CreateDecryptor(desKey, desIV), CryptoStreamMode.Read);
        byte[] fileContents = Encoding.UTF8.GetBytes(responseStream.ToString());
        responseStream.Close();  ///ERROR here
        request.ContentLength = fileContents.Length;
        Stream requestStream = request.GetRequestStream();
        requestStream.Write(fileContents, 0, fileContents.Length);
        requestStream.Close();
        FtpWebResponse response = (FtpWebResponse)request.GetResponse();
        response.Close();
    }

单元测试：

public void CleanEncryptUploadTest()
    {           
        FT.ftp uploadTest = new FT.ftp();
        uploadTest.UserName = "ausername";
        uploadTest.Password = "apassword";
        uploadTest.SourceFile = "D:''Temp''Test''file.txt";
        uploadTest.Destination = "ftp://ftp.mysite.com/test2.txt";
        byte[] key = ASCIIEncoding.ASCII.GetBytes("TestZone");
        byte[] initVector = ASCIIEncoding.ASCII.GetBytes("TestZone");
        uploadTest.Upload(key, initVector);
    }

加密发布到 FTP 站点的文件

这对我有用，我使用了内存流并将加密的字节写入其中。 还将加密流模式更改为写入。 

    public void Upload(byte[] key, byte[] iv)
    {
        byte[] fileContents;
        using (FileStream inputeFile = new FileStream(this.SourceFile, FileMode.Open, FileAccess.Read))
        {
            using (MemoryStream encryptedStream = new MemoryStream())
            {
                using (CryptoStream cryptostream = new CryptoStream(encryptedStream, new DESCryptoServiceProvider().CreateEncryptor(key, iv), CryptoStreamMode.Write))
                {
                    byte[] bytearrayinput = new byte[inputeFile.Length];
                    inputeFile.Read(bytearrayinput, 0, bytearrayinput.Length);
                    cryptostream.Write(bytearrayinput, 0, bytearrayinput.Length);
                    fileContents = encryptedStream.ToArray();
                }
            }
        }
        FtpWebRequest request = (FtpWebRequest)WebRequest.Create(this.Destination);
        request.Method = WebRequestMethods.Ftp.UploadFile;
        request.Credentials = new NetworkCredential(this.UserName, this.Password);
        request.ContentLength = fileContents.Length;
        Stream requestStream = request.GetRequestStream();
        requestStream.Write(fileContents, 0, fileContents.Length);
        requestStream.Close();
        FtpWebResponse response = (FtpWebResponse)request.GetResponse();
        response.Close();
    }
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