使用密码在 .net 中创建 zip 文件

Question

我正在做一个项目，我需要用 c# 中的文件内容保护密码创建 zip。

在我使用 System.IO.Compression.GZipStream 创建 gzip 内容之前。 .net 是否具有创建 zip 或 rar 密码保护文件的功能？

Answer 1

很遗憾，框架中没有这样的功能。有一种制作 ZIP 文件的方法，但没有密码。如果您想在 C# 中创建受密码保护的 ZIP 文件，我推荐 SevenZipSharp。它基本上是 7-Zip 的托管包装器。

SevenZipBase.SetLibraryPath(Path.Combine(
        Path.GetDirectoryName(Assembly.GetExecutingAssembly().Location) ?? Environment.CurrentDirectory,
        "7za.dll"));

SevenZipCompressor compressor = new SevenZipCompressor();

compressor.Compressing += Compressor_Compressing;
compressor.FileCompressionStarted += Compressor_FileCompressionStarted;
compressor.CompressionFinished += Compressor_CompressionFinished;

string password = @"whatever";
string destinationFile = @"C:\Temp\whatever.zip";
string[] sourceFiles = Directory.GetFiles(@"C:\Temp\YourFiles\");

if (String.IsNullOrWhiteSpace(password))
{
    compressor.CompressFiles(destinationFile, sourceFiles);
}
else
{
    //optional
    compressor.EncryptHeaders = true;
    compressor.CompressFilesEncrypted(destinationFile, password, sourceFiles);
}

Answer 2

看看 DotNetZip（@AFract 在评论中为 GitHub 提供了一个新的 link）

它有非常好的文档，它还允许您在运行时将 dll 作为嵌入文件加载。

Answer 3

我想添加更多选项。

对于 .NET，可以使用 SharpZipLib, for Xamarin use SharpZipLib.Portable.

.NET 示例：

using ICSharpCode.SharpZipLib.Zip;

// Compresses the supplied memory stream, naming it as zipEntryName, into a zip,
// which is returned as a memory stream or a byte array.
//
public MemoryStream CreateToMemoryStream(MemoryStream memStreamIn, string zipEntryName) {

    MemoryStream outputMemStream = new MemoryStream();
    ZipOutputStream zipStream = new ZipOutputStream(outputMemStream);

    zipStream.SetLevel(3); //0-9, 9 being the highest level of compression
    zipStream.Password = "Your password";

    ZipEntry newEntry = new ZipEntry(zipEntryName);
    newEntry.DateTime = DateTime.Now;

    zipStream.PutNextEntry(newEntry);

    StreamUtils.Copy(memStreamIn, zipStream, new byte[4096]);
    zipStream.CloseEntry();

    zipStream.IsStreamOwner = false;    // False stops the Close also Closing the underlying stream.
    zipStream.Close();          // Must finish the ZipOutputStream before using outputMemStream.

    outputMemStream.Position = 0;
    return outputMemStream;

    // Alternative outputs:
    // ToArray is the cleaner and easiest to use correctly with the penalty of duplicating allocated memory.
    byte[] byteArrayOut = outputMemStream.ToArray();

    // GetBuffer returns a raw buffer raw and so you need to account for the true length yourself.
    byte[] byteArrayOut = outputMemStream.GetBuffer();
    long len = outputMemStream.Length;
}

可以找到更多示例 here。

如果你可以在没有密码功能的情况下生活，可以提到 ZipStorer or the built in .NET function in System.IO.Compression。

Answer 4

DotNetZip 以干净的方式工作得很好。

DotNetZip is a FAST, FREE class library and toolset for manipulating zip files.

代码

static void Main(string[] args)
{
        using (ZipFile zip = new ZipFile())
        {

            zip.Password = "mypassword";

            zip.AddDirectory(@"C:\Test\Report_CCLF5\");
            zip.Save(@"C:\Test\Report_CCLF5_PartB.zip");
        }
 }

使用密码在 .net 中创建 zip 文件

create zip file in .net with password

.net

c#

passwords

zip

dotnetzip