[英]c# hash and php MD5 file/folder hash not the same
I have to MD5 hash files/folders on both a client(C#) and a server(PHP) file structure.我必须在客户端(C#)和服务器(PHP)文件结构上使用 MD5 hash 文件/文件夹。 (Server land is PHP and client land is c#.) The problem is while they work they do not match. (服务器区是 PHP,客户端区是 c#。)问题是它们工作时不匹配。 Any ideas would be greatly appreciated任何想法将不胜感激
Here are my two algorithms这是我的两个算法
C# C#
using System;
using System.IO;
using System.Security.Cryptography;
using System.Text;
namespace nofolder
{
public class classHasher
{
/**********
* recursive folder MD5 hash of a dir
*/
MD5 hashAlgo = null;
StringBuilder sb;
public classHasher()
{
hashAlgo = new MD5CryptoServiceProvider();
}
public string getHash(String path)
{
// get the file attributes for file or directory
if (File.Exists(path)) return getHashOverFile(path);
if (Directory.Exists(path)) return getHashOverFolder(path);
return "";
}
public string getHashOverFolder(String path)
{
sb = new StringBuilder();
getFolderContents(path);
return sb.ToString().GetHashCode().ToString();
}
public string getHashOverFile(String filename)
{
sb = new StringBuilder();
getFileHash(filename);
return sb.ToString().GetHashCode().ToString();
}
private void getFolderContents(string fold)
{
foreach (var d in Directory.GetDirectories(fold))
{
getFolderContents(d);
}
foreach (var f in Directory.GetFiles(fold))
{
getFileHash(f);
}
}
private void getFileHash(String f)
{
using (FileStream file = new FileStream(f, FileMode.Open, FileAccess.Read))
{
byte[] retVal = hashAlgo.ComputeHash(file);
file.Close();
foreach (var y in retVal)
{
sb.Append(y.ToString());
}
}
}
}
}
PHP PHP
function include__md5_dir($dir){
/**********
* recursive folder MD5 hash of a dir
*/
if (!is_dir($dir)){
return md5_file($dir);
}
$filemd5s = array();
$d = dir($dir);
while (false !== ($entry = $d->read())){
if ($entry != '.' && $entry != '..'){
if (is_dir($dir.'/'.$entry)){
$filemd5s[] = include__md5_dir($dir.'/'.$entry);
}
else{
$filemd5s[] = md5_file($dir.'/'.$entry);
}
}
}
$d->close();
return md5(implode('', $filemd5s));
}
EDIT.编辑。
I have decided the c# must change .我已经决定c# 必须改变。 the PHP is fine as it is . PHP 很好。 The first code that works 100% gets the bounty第一个 100% 有效的代码获得赏金
Your PHP code is assembling hexadecimal numbers (as per the md5_file()
documentation) 您的PHP代码正在组装十六进制数字(根据md5_file()
文档)
Your C# code is assembling non-0-padded decimal numbers. 您的C#代码正在组装非0填充的十进制数字。
You need to y.ToString("x2")
to format as hexadecimal. 您需要y.ToString("x2")
格式化为十六进制。
Also, return sb.ToString().GetHashCode().ToString();
另外, return sb.ToString().GetHashCode().ToString();
is extremely wrong. 是非常错误的。 Don't call GetHashCode()
; 不要调用GetHashCode()
; it's not what you want. 这不是你想要的。
I eventually fixed this myself and I include the answer for future posterity - the key to this solution was irradicating the different default dir ORDERING that linux and windows use . 我最终自己解决了这个问题,并为以后的解决提供了答案- 该解决方案的关键是阐明Linux和Windows使用的不同默认目录ORDERING 。 This was only tested on the linux server (Cent OS6.3) and Windows 7 Client. 仅在linux服务器(Cent OS6.3)和Windows 7客户端上对此进行了测试。
C# C#
public class classHasher
{
/**********
* recursive folder MD5 hash of a dir
*/
MD5 hashAlgo = null;
StringBuilder sb;
public classHasher()
{
hashAlgo = new MD5CryptoServiceProvider();
}
public string UltraHasher(String path)
{
/**********
* recursive folder MD5 hash of a dir
*/
if (!Directory.Exists(path))
{
return getHashOverFile(path);
}
List<string> filemd5s = new List<string>();
List<string> dir = new List<string>();
if (Directory.GetDirectories(path) != null) foreach (var d in Directory.GetDirectories(path))
{
dir.Add(d);
}
if (Directory.GetFiles(path) != null) foreach (var f in Directory.GetFiles(path))
{
dir.Add(f);
}
dir.Sort();
foreach (string entry in dir)
{
if (Directory.Exists(entry))
{
string rtn = UltraHasher(entry.ToString());
//Debug.WriteLine(" ULTRRAAHASHER:! " + entry.ToString() + ":" + rtn);
filemd5s.Add(rtn);
}
if (File.Exists(entry))
{
string rtn = getHashOverFile(entry.ToString());
//Debug.WriteLine(" FILEEEEHASHER:! " + entry.ToString() + ":" + rtn);
filemd5s.Add(rtn);
}
}
//Debug.WriteLine(" ULTRRAASUMMMM:! " + String.Join("", filemd5s.ToArray()));
string tosend = CalculateMD5Hash(String.Join("", filemd5s.ToArray()));
//Debug.WriteLine(" YEAHHAHHAHHAH:! " + tosend);
return tosend;
}
public string getHashOverFile(String filename)
{
sb = new StringBuilder();
getFileHash(filename);
return sb.ToString();
}
private void getFileHash(String f)
{
using (FileStream file = new FileStream(f, FileMode.Open, FileAccess.Read))
{
byte[] retVal = hashAlgo.ComputeHash(file);
file.Close();
foreach (var y in retVal)
{
sb.Append(y.ToString("x2"));
}
}
}
public string CalculateMD5Hash(string input)
{
byte[] inputBytes = System.Text.Encoding.ASCII.GetBytes(input);
byte[] hash = hashAlgo.ComputeHash(inputBytes);
StringBuilder sz = new StringBuilder();
for (int i = 0; i < hash.Length; i++)
{
sz.Append(hash[i].ToString("x2"));
}
return sz.ToString();
}
}
PHP 的PHP
function md5_dir($dir){
/**********
* recursive folder MD5 hash of a dir
*/
if (!is_dir($dir)){
return md5_file($dir);
}
$filemd5s = array();
$bit = array();
$d = scandir($dir);
foreach($d as $entry){
if ($entry != '.' && $entry != '..'){
$bit[] = $entry;
}
}
asort($bit);
foreach($bit as $entry){
if (is_dir($dir.'/'.$entry)){
$sz = md5_dir($dir.'/'.$entry);
//echo "\n ULTRRAAHASHER:! ".$dir.'/'.$entry.":$sz";
$filemd5s[] = $sz;
}
else{
$sz = md5_file($dir.'/'.$entry);
$filemd5s[] = $sz;
//echo "\n FILEEEEHASHER:! ".$dir.'/'.$entry.":$sz";
}
}
//echo "\n ULTRRAASUMMMM:! ".implode('', $filemd5s)."";
//echo "\n YEAHHAHHAHHAH:! ".md5(implode('', $filemd5s))."";
return md5(implode('', $filemd5s));
}
these two will traverse either a C# Windows and or a PHP linux folder and return the SAME hashes for all dirs (recursive, so it includes sub dirs) inside Linuxland and all inside Windowsland. 这两个将遍历C#Windows和PHP linux文件夹,并为Linuxland和Windowsland内部的所有目录返回递归的SAME散列(递归,因此它包括子目录)。
For sort like C# asort() is case sensitive so you will need per example natcasesort()对于像 C# 这样的排序, asort() 区分大小写,因此您需要每个示例 natcasesort()
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