using System;
    using System.Text;

    public static class BasicAuthenticationUtil
    {
        /// <summary>
        /// Parse content of Authorization header.
        /// </summary>
        /// <returns>
        /// true if parsed successfully, false if not.
        /// </returns>
        public static bool ParseAuthorizationHeader(string auth,
            out string username, out string password)
        {
            username = password = string.Empty;

            if (auth == null || auth.Substring(0, 5).ToLower() != "basic")
            { return false; }

            string base64Cred = auth.Substring(6);

            byte[] certBytes = Convert.FromBase64String(base64Cred);
            string[] cert = new UTF8Encoding().GetString(certBytes).Split(':');
            username = cert[0];
            password = cert[1];

            // Vista sends DOMAIN\username
            int d = username.IndexOf('\\');
            if (d != -1)
            { username = username.Remove(0, d + 1); }

            return true;
        }
    }