PHP md5_file in C#...

[CodeNeos]

I am creating an XML file that is parsed by my C# application, it also contains MD5 hashes from files... I want to check these hashes in C#.

But no C# md5 functions seem to be compatible with the PHP MD5_file function.

I have used the md5 functions bellow:

		/// <summary>
		/// Parse MD5 file
		/// </summary>
		private string MD5_file(string file)
		{
			//create srvice
			MD5CryptoServiceProvider csp = new MD5CryptoServiceProvider();

			// compute hash
			FileStream file_ = File.OpenRead(file);
			byte[] md5 = csp.ComputeHash(file_);
			file_.Close();

			// convert to string
			return BitConverter.ToString(md5).Replace("-", "").ToLower();
					
		}

C# MD5 function i found on the web...

		/// <summary>
		/// MD5 web function
		/// </summary>
		private string getMD5(string file)
		{
			// build xml data string
			StreamReader sr = new StreamReader(file);
			string data = "";
			do
			{
				data += sr.ReadLine();
			}
			while (sr.ReadLine()!=null);
			
			//cretae hash
			MD5 md5 = MD5CryptoServiceProvider.Create ();
			byte[] dataMd5 = md5.ComputeHash (Encoding.UTF8.GetBytes (data));
			StringBuilder sb = new StringBuilder();
			for (int i = 0; i < dataMd5.Length; i++) sb.AppendFormat("{0:x2}", dataMd5[i]);
			return sb.ToString ();
		}

And also tryed a different methode in PHP:

private function md5_sum($file)
{
    $f = file_get_contents($file);
    $md5sum = md5($f);

    return $md5sum;
} 

[MadHatter]

System.Web.Security.FormsAuthentication.HashPasswordForStoringInConfigFile( "test", "MD5" ) works like md5("test")

[CodeNeos]

Thanks, i'll try it

[CodeNeos]

No, it still generates a different hash then the md5_file() function in PHP... I think ot problem is how files get read in PHP and in C#

[Krzemo]

The problem may be connected to the way in which strings are encoded before MD5. Make sure that U don't use different encoding.


Best regards,
Krzemo.