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Convert PHP function into C#

I need help converting a, for me, complex php function into C# code.

PHP Function:

function ssha($password){
            mt_srand((double)microtime()*1000000);
            $salt = pack("CCCC", mt_rand(), mt_rand(), mt_rand(), mt_rand());
            $hash = base64_encode(pack("H*", sha1($password . $salt)) . $salt);
            $hash = str_replace('+', '@', $hash);
            $hash = str_replace('/', '.', $hash);
            return $hash;
}

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My own C# code (that doesn't work):

public static string GetLegatoHash(string Password)
        {
            // mt_srand((double)microtime()*1000000);
            int seconds = DateTime.Now.Second;
            Random rnd = new Random(seconds);

            // $salt = pack("CCCC", mt_rand(), mt_rand(), mt_rand(), mt_rand());
            byte[] data = new byte[] { (byte)rnd.Next(), (byte)rnd.Next(), (byte)rnd.Next(), (byte)rnd.Next() };
            string salt = data[0].ToString() + data[1].ToString() + data[2].ToString() + data[3].ToString();
            
            // sha1($password . $salt)
            ASCIIEncoding UE = new ASCIIEncoding();
            byte[] HashValue, MessageBytes = UE.GetBytes((Password + salt));
            HashAlgorithm SHhash = new SHA1Managed();

            HashValue = SHhash.ComputeHash(data);

            // pack("H*", sha1($password . $salt))
            List<byte> hashdata = new List<byte>();
            foreach (byte b in HashValue)
            {
                byte nibbleLow = (byte)(b & 0x0F);
                byte nibbleHigh = (byte)((b & 0xF0) >> 4);

                hashdata.Add(nibbleHigh);
                hashdata.Add(nibbleLow);
            }

            foreach (byte b in data)
            {
                byte nibbleLow = (byte)(b & 0x0F);
                byte nibbleHigh = (byte)((b & 0xF0) >> 4);

                hashdata.Add(nibbleHigh);
                hashdata.Add(nibbleLow);
            }

            // base64_encode(pack("H*", sha1($password . $salt)) . $salt);
            byte[] toEncodeAsBytes = System.Text.ASCIIEncoding.ASCII.GetBytes(string.Join("", hashdata.ToArray()) + salt);
            string hash = System.Convert.ToBase64String(toEncodeAsBytes);

            //$hash = str_replace('+', '@', $hash);
            //$hash = str_replace('/', '.', $hash);
            hash.Replace("+", "@").Replace("/", ".");

            return hash;
        }

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BuggyCoder

i am sure there is no tool to convert php to c#, however i have modified the code in c# as:-

public static string GetLegatoHash(string Password)
        {
            // mt_srand((double)microtime()*1000000);
            int seconds = DateTime.Now.Second;
            Random rnd = new Random(seconds);

            // $salt = pack("CCCC", mt_rand(), mt_rand(), mt_rand(), mt_rand());
            byte[] data = new byte[] { (byte)rnd.Next(), (byte)rnd.Next(), (byte)rnd.Next(), (byte)rnd.Next() };
            string salt = data[0].ToString() + data[1].ToString() + data[2].ToString() + data[3].ToString();

            // sha1($password . $salt)
            ASCIIEncoding UE = new ASCIIEncoding();
            byte[] HashValue, MessageBytes = UE.GetBytes((Password + salt));
            HashAlgorithm SHhash = new SHA1Managed();

            HashValue = SHhash.ComputeHash(data);

            // pack("H*", sha1($password . $salt))
            List<byte> hashdata = new List<byte>();
            foreach (byte b in HashValue)
            {
                byte nibbleLow = (byte)(b & 0x0F);
                byte nibbleHigh = (byte)((b & 0xF0) >> 4);

                hashdata.Add(nibbleHigh);
                hashdata.Add(nibbleLow);
            }

            foreach (byte b in data)
            {
                byte nibbleLow = (byte)(b & 0x0F);
                byte nibbleHigh = (byte)((b & 0xF0) >> 4);

                hashdata.Add(nibbleHigh);
                hashdata.Add(nibbleLow);
            }

            // base64_encode(pack("H*", sha1($password . $salt)) . $salt);
            
            byte[] toEncodeAsBytes = Encoding.ASCII.GetBytes(salt);
            hashdata.AddRange(toEncodeAsBytes);

            string hash = System.Convert.ToBase64String(hashdata.ToArray());

            //$hash = str_replace('+', '@', $hash);
            //$hash = str_replace('/', '.', $hash);
            hash.Replace("+", "@").Replace("/", ".");

            return hash;
        }

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see if it works....

McLyd

ASKER

Sorry, no go on that one. But probably a good modification though.

Any other ideas?

BuggyCoder

any reasons for not using the code...
what challenge you see in it...

McLyd

ASKER

Well, the problem is that it still isn't working. The C# code doesn't produce the same output as the php code does.

The challenge.... is that I don't know enough php to make the conversion on my own.

ASKER CERTIFIED SOLUTION

McLyd

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McLyd

ASKER

It's the only solution that works.