SharpZipLib 解密

cbgn 2009-05-21 03:49:31

有用过SharpZipLib的兄弟吗？
不加密，解密没问题。

加密后，用代码解密失败，提示：Entry compressed size 11 too small for encryption
手工解密也失败。

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langeyang 2009-07-06

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我用了解密老提示密码错误，无法解密啊？谁能告诉我为什么

cbgn 2009-05-21

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有用加密解密成功的吗

ericzhangbo1982111 2009-05-21

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SharpZipLib 不是有例子吗
我上面就是他们给的列子

cbgn 2009-05-21

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兄弟们，别一贴一大堆，说说怎么回事呀

cbgn 2009-05-21

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这是压缩。



   /// <summary> 

        /// 压缩多层目录 

        /// </summary> 

        /// <param name="strFile">压缩目录</param> 

        /// <param name="s">压缩文件流</param> 

        /// <param name="staticFile"></param> 

        public static void ZipFileDirectory(string strDirectory, string zipedFile)

        {

            using (System.IO.FileStream ZipFile = System.IO.File.Create(zipedFile))

            {

                using (ZipOutputStream s = new ZipOutputStream(ZipFile))

                {

                    s.Password = "aaaaa";

                    ZipSetp(strDirectory, s, "");

                }

            }

        }



        /// <summary> 

        /// 递归遍历目录 

        /// </summary> 

        /// <param name="strFile"></param> 

        /// <param name="s"></param> 

        /// <param name="parentPath"></param> 

        private static void ZipSetp(string strDirectory, ZipOutputStream s, string parentPath)

        {

            if (strDirectory[strDirectory.Length - 1] != Path.DirectorySeparatorChar)

            {

                strDirectory += Path.DirectorySeparatorChar;

            }



            Crc32 crc = new Crc32();



            string[] filenames = Directory.GetFileSystemEntries(strDirectory);



            foreach (string file in filenames)// 遍历所有的文件和目录 

            {



                if (Directory.Exists(file))// 先当作目录处理如果存在这个目录就递归Copy该目录下面的文件 

                {

                    ZipSetp(file, s, file.Substring(file.LastIndexOf("\\") + 1) + "\\");

                }



                else // 否则直接压缩文件 

                {

                    //打开压缩文件 

                    using (FileStream fs = File.OpenRead(file))

                    {



                        byte[] buffer = new byte[fs.Length];

                        fs.Read(buffer, 0, buffer.Length);



                        string fileName = parentPath + file.Substring(file.LastIndexOf("\\") + 1);

                        ZipEntry entry = new ZipEntry(fileName);



                        entry.DateTime = DateTime.Now;

                        entry.Size = fs.Length;



                        fs.Close();



                        crc.Reset();

                        crc.Update(buffer);



                        entry.Crc = crc.Value;

                        s.PutNextEntry(entry);



                        s.Write(buffer, 0, buffer.Length);

                    }

                }

            }

        }

ericzhangbo1982111 2009-05-21

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// SharpZipLibrary samples
// Copyright (c) 2007, AlphaSierraPapa
// All rights reserved.
//
// Redistribution and use in source and binary forms, with or without modification, are
// permitted provided that the following conditions are met:
//
// - Redistributions of source code must retain the above copyright notice, this list
// of conditions and the following disclaimer.
//
// - Redistributions in binary form must reproduce the above copyright notice, this list
// of conditions and the following disclaimer in the documentation and/or other materials
// provided with the distribution.
//
// - Neither the name of the SharpDevelop team nor the names of its contributors may be used to
// endorse or promote products derived from this software without specific prior written
// permission.
//
// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS &AS IS& AND ANY EXPRESS
// OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY
// AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
// CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
// DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER
// IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
// OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

using System;
using System.Text;
using System.Collections;
using System.IO;

using ICSharpCode.SharpZipLib.Zip;
using ICSharpCode.SharpZipLib.Zip.Compression.Streams;

class MainClass
{
public static void Main(string[] args)
{
// Perform simple parameter checking.
if ( args.Length < 1 ) {
Console.WriteLine("Usage UnzipFile NameOfFile");
return;
}

if ( !File.Exists(args[0]) ) {
Console.WriteLine("Cannot find file '{0}'", args[0]);
return;
}

using (ZipInputStream s = new ZipInputStream(File.OpenRead(args[0]))) {

ZipEntry theEntry;
while ((theEntry = s.GetNextEntry()) != null) {

Console.WriteLine(theEntry.Name);

string directoryName = Path.GetDirectoryName(theEntry.Name);
string fileName = Path.GetFileName(theEntry.Name);

// create directory
if ( directoryName.Length > 0 ) {
Directory.CreateDirectory(directoryName);
}

if (fileName != String.Empty) {
using (FileStream streamWriter = File.Create(theEntry.Name)) {

int size = 2048;
byte[] data = new byte[2048];
while (true) {
size = s.Read(data, 0, data.Length);
if (size > 0) {
streamWriter.Write(data, 0, size);
} else {
break;
}
}
streamWriter.Close();
}
}
}
}
}
}

颜氓 2009-05-21

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        /// <summary> 

        /// 解压缩文件(压缩文件中含有子目录) 

        /// </summary> 

        /// <param name="zipfilepath">待解压缩的文件路径 </param> 

        /// <param name="unzippath">解压缩到指定目录 </param> 

        /// <returns>解压后的文件列表 </returns> 

        public List <string> UnZip(string zipfilepath, string unzippath) 

        { 

            //解压出来的文件列表 

            List <string> unzipFiles = new List <string>(); 



            //检查输出目录是否以“\\”结尾 

            if (unzippath.EndsWith("\\")==false||unzippath.EndsWith(":\\")==false) 

            { 

                unzippath += "\\"; 

            } 



            ZipInputStream s = new ZipInputStream(File.OpenRead(zipfilepath)); 

            ZipEntry theEntry; 

            while ((theEntry = s.GetNextEntry()) != null) 

            { 

                string directoryName = Path.GetDirectoryName(unzippath); 

                string fileName = Path.GetFileName(theEntry.Name); 



                //生成解压目录【用户解压到硬盘根目录时，不需要创建】 

                if (!string.IsNullOrEmpty(directoryName)) 

                { 

                    Directory.CreateDirectory(directoryName); 

                } 



                if (fileName != String.Empty) 

                { 

                    //如果文件的压缩后大小为0那么说明这个文件是空的,因此不需要进行读出写入 

                    if (theEntry.CompressedSize == 0) 

                        break; 

                    //解压文件到指定的目录 

                    directoryName = Path.GetDirectoryName(unzippath + theEntry.Name); 

                    //建立下面的目录和子目录 

                    Directory.CreateDirectory(directoryName); 

                    

                    //记录导出的文件 

                    unzipFiles.Add(unzippath + theEntry.Name); 



                    FileStream streamWriter = File.Create(unzippath + theEntry.Name); 



                    int size = 2048; 

                    byte[] data = new byte[2048]; 

                    while (true) 

                    { 

                        size = s.Read(data, 0, data.Length); 

                        if (size > 0) 

                        { 

                            streamWriter.Write(data, 0, size); 

                        } 

                        else 

                        { 

                            break; 

                        } 

                    } 

                    streamWriter.Close(); 

                } 

            } 

            s.Close(); 



            return unzipFiles; 

        } 

    } 



}

ericzhangbo1982111 2009-05-21

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// SharpZipLibrary samples
// Copyright (c) 2007, AlphaSierraPapa
// All rights reserved.
//
// Redistribution and use in source and binary forms, with or without modification, are
// permitted provided that the following conditions are met:
//
// - Redistributions of source code must retain the above copyright notice, this list
// of conditions and the following disclaimer.
//
// - Redistributions in binary form must reproduce the above copyright notice, this list
// of conditions and the following disclaimer in the documentation and/or other materials
// provided with the distribution.
//
// - Neither the name of the SharpDevelop team nor the names of its contributors may be used to
// endorse or promote products derived from this software without specific prior written
// permission.
//
// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS &AS IS& AND ANY EXPRESS
// OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY
// AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
// CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
// DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER
// IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
// OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

using System;
using System.Text;
using System.Collections;
using System.IO;

using ICSharpCode.SharpZipLib.Zip;

class MainClass
{
static public void Main(string[] args)
{
if ( args.Length < 1 ) {
Console.WriteLine("Usage: ZipList file");
return;
}

if ( !File.Exists(args[0]) ) {
Console.WriteLine("Cannot find file");
return;
}

using (ZipFile zFile = new ZipFile(args[0])) {
Console.WriteLine("Listing of : " + zFile.Name);
Console.WriteLine("");
Console.WriteLine("Raw Size Size Date Time Name");
Console.WriteLine("-------- -------- -------- ------ ---------");
foreach (ZipEntry e in zFile) {
DateTime d = e.DateTime;
Console.WriteLine("{0, -10}{1, -10}{2} {3} {4}", e.Size, e.CompressedSize,
d.ToString("dd-MM-yy"), d.ToString("HH:mm"),
e.Name);
}
}
}
}

cbgn 2009-05-21

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压缩时加密。

cbgn 2009-05-21

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        /// <summary> 

        /// 解压缩一个 zip 文件。 

        /// </summary> 

        /// <param name="zipFileName">要解压的 zip 文件。</param> 

        /// <param name="extractLocation">zip 文件的解压目录。</param> 

        /// <param name="password">zip 文件的密码。</param> 

        /// <param name="overWrite">是否覆盖已存在的文件。</param> 

        public static void UnZip(string zipedFile, string strDirectory, string password, bool overWrite)

        {



            if (strDirectory == "")

                strDirectory = Directory.GetCurrentDirectory();

            if (!strDirectory.EndsWith("\\"))

                strDirectory = strDirectory + "\\";



            using (ZipInputStream s = new ZipInputStream(File.OpenRead(zipedFile)))

            {

                s.Password = password;

                ZipEntry theEntry;                



                while ((theEntry = s.GetNextEntry()) != null)

                {

                    string directoryName = "";

                    string pathToZip = "";

                    pathToZip = theEntry.Name;



                    if (pathToZip != "")

                        directoryName = Path.GetDirectoryName(pathToZip) + "\\";



                    string fileName = Path.GetFileName(pathToZip);



                    Directory.CreateDirectory(strDirectory + directoryName);



                    if (fileName != "")

                    {

                        if ((File.Exists(strDirectory + directoryName + fileName) && overWrite) || (!File.Exists(strDirectory + directoryName + fileName)))

                        {

                            using (FileStream streamWriter = File.Create(strDirectory + directoryName + fileName))

                            {

                                int size = 2048;

                                byte[] data = new byte[2048];

                                while (true)

                                {

                                    size = s.Read(data, 0, data.Length);



                                    if (size > 0)

                                        streamWriter.Write(data, 0, size);

                                    else

                                        break;

                                }

                                streamWriter.Close();

                            }

                        }

                    }

                }



                s.Close();

            }

        }