C# Equivalent of PHP's raw output MD5?

Question

I am attempting to implement a 'simpler' version of a (remote) WordPress login.

I have gotten so far, but I am a bit stuck when it comes to the WordPress algorithm to encrypt a password. This code snippet from 'class-phpass.php' (which WP uses to hash a password)...

$hash = md5($salt . $password, TRUE);
do {
    $hash = md5($hash . $password, TRUE);
} while (--$count);

According to PHP 5 manual -

string md5 ( string $str [, bool $raw_output = false ] )

"If the optional raw_output is set to TRUE, then the md5 digest is instead returned in raw binary format with a length of 16."

To implement this in C#, thus far, I am using the code below, can be found here :

public string Md5Sum(string strToEncrypt)
{
    System.Text.UTF8Encoding ue = new System.Text.UTF8Encoding();
    byte[] bytes = ue.GetBytes(strToEncrypt);

    // encrypt bytes
    MD5CryptoServiceProvider md5 = new MD5CryptoServiceProvider();
    byte[] hashBytes = md5.ComputeHash(bytes);

    // Convert the encrypted bytes back to a string (base 16)
    string hashString = "";

    for (int i = 0; i < hashBytes.Length; i++)
    {
        hashString += System.Convert.ToString(hashBytes[i], 16).PadLeft(2, '0');
    }

    return hashString.PadLeft(32, '0');
}

As you can see, this C# version is the equivalent of the PHP version, but passing in FALSE as the second parameter. I have checked this by comparing the output of both versions.

In addition, the WordPress version passes TRUE. I am struggling to apply this change to the C# version.

What is the C# equivalent of the following PHP code?

$hash = md5($salt . $password, TRUE);

Answer 1

raw output means actual bytes, you don't need to convert them into base16 string:

public static byte[] Md5Sum_Raw(string strToEncrypt)
{
    System.Text.UTF8Encoding ue = new System.Text.UTF8Encoding();
    byte[] bytes = ue.GetBytes(strToEncrypt);

    // encrypt bytes
    MD5CryptoServiceProvider md5 = new MD5CryptoServiceProvider();
    return md5.ComputeHash(bytes);
}

PHP:

$s = md5('1234567890', true);
for ($i=0; $i < strlen($s); $i++)
    echo ord($s[$i]) . ' ';

232 7 241 252 248 45 19 47 155 176 24 202 103 56 161 159

C#:

byte[] hash = Md5Sum_Raw("1234567890");
for (int i = 0; i < hash.Length; i++)
    System.Console.Out.Write(hash[i] + " ");
System.Console.Out.WriteLine();

232 7 241 252 248 45 19 47 155 176 24 202 103 56 161 159

Answer 2

Please see this image public static string MD5Hash(string input)...