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An MD5 Function Compatible with PHP

, 14 Jul 2005
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Describes an implementation of a MD5 function compatible with the PHP function.

Introduction

Recently I needed to integrate an ASP.NET application with SugarCRM, an Open Source CRM implementation (a very good one).

SugarCRM publishes a SOAP API, but I needed to send the password in MD5 format compatible with the MD5 function of PHP (SugarCRM is built on PHP). So I wrote a function that emulates the MD5 function of PHP.

MD5 Function

In PHP the MD5 function receives a string and returns a hexadecimal number of length 32.

So the implementation of this function in C# is like this:

using System.Security.Cryptography;
using System.Text;

public sealed class PhpCompatible
{
   public static string Md5Hash (string pass)
   {
     MD5 md5 = MD5CryptoServiceProvider.Create ();
     byte[] dataMd5 = md5.ComputeHash (Encoding.Default.GetBytes (pass));
     StringBuilder sb = new StringBuilder();
     for (int i = 0; i < dataMd5.Length; i++)
       sb.AppendFormat("{0:x2}", dataMd5[i]);
     return sb.ToString ();
}

One difficulty I found is with the AppendFormat, because I needed to pad the hexadecimal digit with 0. The solution was to put a 2 after the x of the format string. In general the documentation of the Format functions is hard to understand.

There are a lot of PHP applications out there, and we need to have a mechanism to interact with them. I hope this function helps you if you are in a situation like the one I described.

License

This article has no explicit license attached to it but may contain usage terms in the article text or the download files themselves. If in doubt please contact the author via the discussion board below.

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About the Author

ediazc
Web Developer
Chile Chile
Eduardo Diaz
personal blog

Comments and Discussions

 
QuestionHad any luck with set_entry ? Pinmemberjpevans22-Feb-06 4:00 

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