C# 使用 .NET 4.5 解压缩受密码保护的 ZIP 文件
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Decompressing password-protected ZIP files with .NET 4.5
提问by So Many Goblins
Microsoft introduces improvements for ZIP file handling in .NET 4.5 in the System.IO.Compressionnamespace. Namely the classes ZipArchiveand ZipFile. However, I have not yet seen a way to use native .NET ZIP file handling for password protected files. Is there a way to achieve this? (I am aware that there are pretty good 3rd party zip file libraries, that is not the question.)
Microsoft 在System.IO.Compression命名空间中对 .NET 4.5 中的 ZIP 文件处理进行了改进。即类ZipArchive和ZipFile。但是，我还没有看到对受密码保护的文件使用本机 .NET ZIP 文件处理的方法。有没有办法实现这一目标？（我知道有非常好的 3rd 方 zip 文件库，这不是问题。）
采纳答案by Oliver
Unfortunately not. There is no support within the .Net Framework 4.5 for password protected zip files. In this case you have to switch to one of the well known 3rd party libraries.
不幸的是没有。.Net Framework 4.5 不支持受密码保护的 zip 文件。在这种情况下，您必须切换到著名的 3rd 方库之一。
回答by Micah Armantrout
回答by Jonesome Reinstate Monica
The ionic method is awesome. I tried three other approaches, and it is by far the best. Don't waste time, just use it.
离子方法很棒。我尝试了其他三种方法，这是迄今为止最好的。不要浪费时间，只需使用它。
https://dotnetzip.codeplex.com/wikipage?title=PS-Examples
https://dotnetzip.codeplex.com/wikipage?title=PS-Examples
Supports password encrypted, and other zip options.
支持密码加密和其他 zip 选项。
回答by Nicholas Carey
As pointed out, DotNetZipis your friend. Unpacking your zip file is as easy as
正如所指出的，DotNetZip是您的朋友。解压您的 zip 文件就像
using ( ZipFile archive = new ZipFile( @"c:\path\to\your\password\protected\archive.zip",) )
{
archive.Password = "your-pass-word-here" ;
archive.Encryption = EncryptionAlgorithm.PkzipWeak ; // the default: you might need to select the proper value here
archive.StatusMessageTextWriter = Console.Out;
archive.ExtractAll( @"c:\path\to\unzip\directory\", ExtractExistingFileAction.Throw ) ;
}
In my experience, DotNetZip runs about as fast as Info-Zip'sopen source unziputility and uses roughly the same amount of memory.
根据我的经验，DotNetZip 的运行速度与Info-Zip 的开源解压缩实用程序一样快，并且使用的内存量大致相同。
Edited To Note:DotNetZip used to live at Codeplex. Codeplex has been shut down. The old archive is still available at Codeplex. It looks like the code has migrated to Github:
编辑为注意：DotNetZip 曾经住在 Codeplex。Codeplex 已关闭。旧档案仍可在 Codeplex 获得。看起来代码已经迁移到 Github：
- https://github.com/DinoChiesa/DotNetZip. Looks to be the original author's repo.
- https://github.com/haf/DotNetZip.Semverd. This looks to be the currently maintained version. It's also packaged up an available via Nuget at https://www.nuget.org/packages/DotNetZip/
- https://github.com/DinoChiesa/DotNetZip。看起来是原作者的回购。
- https://github.com/haf/DotNetZip.Semverd。这看起来是当前维护的版本。它还打包了一个可通过 Nuget 在https://www.nuget.org/packages/DotNetZip/
回答by user1253917
There does not appear to be any support for password protected zip files in the native .net 4.5 library, similar to how there does not appear to be support in windows explorer, even with Windows 10! Some people have reported that they have zip corruption issues using the 3rd party DotNetLib, so make sure you extensively test if you do go down that path or try SharpZipLibinstead.
本机 .net 4.5 库中似乎不支持受密码保护的 zip 文件，类似于 Windows 资源管理器中似乎不支持的方式，即使在 Windows 10 中也是如此！有些人报告说他们在使用 3rd 方 DotNetLib 时遇到了 zip 损坏问题，因此请确保您进行了广泛的测试，如果您确实沿着这条路走下去，或者尝试使用SharpZipLib。
回答by Alberto Silva
For those targeting .Net Standard 2.0, SharpZipLib does a great work, handling gracefully extraction of in memory password protected zip files to byte[].
对于那些以 .Net Standard 2.0 为目标的人来说，SharpZipLib 做得很好，可以优雅地将内存中受密码保护的 zip 文件提取到 byte[]。
https://github.com/icsharpcode/SharpZipLib
https://github.com/icsharpcode/SharpZipLib
Tried Ionic for the same scenario but was enable to extract files with the ZipInputStream, which generated corrupt extracted byte arrays.
为相同的场景尝试了 Ionic，但可以使用 ZipInputStream 提取文件，这会生成损坏的提取字节数组。
