有没有一种方法来解压另一个库DynaZip最大文件？ FE DotNetZip(Is there

我在我们存储与DynaZip最大压缩加密PDF文件，使用下面的代码数据库：

MemoryStream msIN = new System.IO.MemoryStream();   //Input MemoryStream
MemoryStream msZip = new System.IO.MemoryStream();  //Compressed MemoryStream
BinaryReader objBinaryReader;
BinaryWriter objBinaryWriter;


public MemoryStream CompressStream(byte[] vbuf)
{
    System.IO.BinaryWriter bw = new System.IO.BinaryWriter(msIN);
    bw.Write(vbuf);
    CDZipSNET dz1 = new CDZipSNET();
    dz1.ZipMemToMemCallback += new CDZipSNET.OnZipMemToMemCallback(this.ZipMemToMemCallback_event);
    dz1.ActionDZ = CDZipSNET.DZACTION.ZIP_MEMTOMEM;
    return msZip;
}

这是ZipMemToMemCallback_event代码：

public void ZipMemToMemCallback_event(CDZipSNET.MEMTOMEMACTION lAction,ref byte[] lpMemBuf,ref uint pdwSize,uint dwTotalReadL,uint dwTotalReadH,uint dwTotalWrittenL,uint dwTotalWrittenH,ref CDZipSNET.MEMTOMEMRESPONSE plRet)
{
    int bytesToRead;

    switch(lAction)
    {
        case CDZipSNET.MEMTOMEMACTION.MEM_READ_DATA:
            if((dwTotalReadL == 0) && (dwTotalReadH == 0))
            {
                msIN.Seek(0, System.IO.SeekOrigin.Begin);
                objBinaryReader = new System.IO.BinaryReader(msIN);
            }
            try
            {
                bytesToRead = (int)(objBinaryReader.BaseStream.Length - dwTotalReadL);
                if(bytesToRead > pdwSize)
                {
                    bytesToRead = (int)pdwSize;
                    plRet = CDZipSNET.MEMTOMEMRESPONSE.MEM_CONTINUE;
                }
                else
                { 
                    plRet = CDZipSNET.MEMTOMEMRESPONSE.MEM_DONE; 
                }
                pdwSize = (uint)bytesToRead;
                if(bytesToRead > 0)
                { 
                    objBinaryReader.Read(lpMemBuf, 0, bytesToRead); 
                }
            }
            catch 
            { 
                plRet = CDZipSNET.MEMTOMEMRESPONSE.MEM_ERROR; 
            }
            break;

        case CDZipSNET.MEMTOMEMACTION.MEM_WRITE_DATA:
            if((dwTotalWrittenL == 0) && (dwTotalWrittenH == 0))
            { 
                objBinaryWriter = new System.IO.BinaryWriter(msZip); 
            }
            try
            {
                objBinaryWriter.Write(lpMemBuf, 0, (int)pdwSize);
                plRet = CDZipSNET.MEMTOMEMRESPONSE.MEM_CONTINUE;
            }
            catch (System.Exception)
            { 
                plRet = CDZipSNET.MEMTOMEMRESPONSE.MEM_ERROR; 
            }
            break;

        default: plRet = CDZipSNET.MEMTOMEMRESPONSE.MEM_ERROR;
            break;
    }
}

我公司将提供必要的其他任何东西anwser这个谜团，我已经尝试过正规邮编解压缩，Zlib压缩，Gzip已无济于事。我感谢所有帮助。谢谢。

编辑：问题是，DinaZip是propietary，停产库，没有帮助或故障由发布它，我commisioned解压缩一堆使用这个库（与代码avobe）先前压缩的文件和公司我不再有可用于解压缩库，我不知道是否有人知道任何方式这个文件可能使用第三方库或方法来解压缩。

此代码是从https://zlibnet.codeplex.com ，它可以解压缩加密DynaZip流：

public static class DynazipCompressor
{
    const int DZ_DEFLATE_POS = 46;

    public static bool IsDynazip(byte[] source)
    {
        return source.Length >= 4 && BitConverter.ToInt32(source, 0) == 0x02014b50;
    }

    public static byte[] DeCompress(byte[] source)
    {
        if (!IsDynazip(source))
            throw new InvalidDataException("not dynazip header");
        using (MemoryStream srcStream = new MemoryStream(source, DZ_DEFLATE_POS, source.Length - DZ_DEFLATE_POS))
        using (MemoryStream dstStream = DeCompress(srcStream))
            return dstStream.ToArray();
    }

    private static MemoryStream DeCompress(Stream source)
    {
        MemoryStream dest = new MemoryStream();
        DeCompress(source, dest);
        dest.Position = 0;
        return dest;
    }

    private static void DeCompress(Stream source, Stream dest)
    {
        using (DeflateStream zsSource = new DeflateStream(source, CompressionMode.Decompress, true))
        {
            zsSource.CopyTo(dest);
        }
    }
}

甲DynaZip流是简单地用一个PKZIP报头中的DeflateStream，所以这个代码只跳过标题。