Login not working about whatsapi HOT 10 OPEN

        string NC = "00000001";
        string CNonce = "e129f27c-5103-5c5c-844b-cdf0a15e160d";

        MemoryStream memoryStream = new MemoryStream();
        memoryStream.Write(this.Md5Digest(Encoding.UTF8.GetBytes(string.Concat(new string[]
            {
                Program.User,
                ":",
                Program.Realm,
                ":",
                Program.Password
            }))), 0, this.Md5Digest(Encoding.UTF8.GetBytes(string.Concat(new string[]
            {
                Program.User,
                ":",
                Program.Realm,
                ":",
                Program.Password
            }))).Length);
        byte[] bytes = Encoding.UTF8.GetBytes(":" + Nonce + ":" + CNonce);
        memoryStream.Write(bytes, 0, bytes.Length);
        string Digest_Uri = "xmpp/" + Program.Realm;
        byte[] array = new byte[memoryStream.Length];
        Array.Copy(memoryStream.GetBuffer(), array, (int)memoryStream.Length);
        string A2 = "AUTHENTICATE:" + Digest_Uri;
        string text5 = string.Concat(new string[]
            {
                this.BytesToHex(this.Md5Digest(array)),
                ":",
                Nonce,
                ":",
                NC,
                ":",
                CNonce,
                ":auth:",
                this.BytesToHex(this.Md5Digest(Encoding.UTF8.GetBytes(A2)))
            });
        string password = this.BytesToHex(this.Md5Digest(Encoding.UTF8.GetBytes(text5)));
        StringBuilder stringBuilder = new StringBuilder();
        stringBuilder.Append("response=");
        stringBuilder.Append(password);
        stringBuilder.Append(",cnonce=\"");
        stringBuilder.Append(CNonce);
        stringBuilder.Append("\",username=\"");
        stringBuilder.Append(Program.User);
        stringBuilder.Append("\"");
        Console.WriteLine(stringBuilder.ToString());
        return stringBuilder.ToString();
    }

JID = "49172xxxxxxx"
wa_pass = wa_functions.encryptPassword("xxxxxxxxxxxxxxx")
start(JID, wa_pass)
sendMessage("1", "49xxxxxxxxxx", "Test!!")