There are various ways to use Single Sign-On (SSO) in asp.net web application. We can use cookies, session (state server), SAML and web services etc. Now we would like to give a brief overview of how to use
Assume that we have two web application hosted on the different virtual directory but under
http://test.com
Other two virtual directory hosted under this domain are:
http://test.com/cookiesite1
http://test.com/cookiesite2
If we login to cookiesite1 then it writes the login information in the cookie and now opens another tab or a new window in the same browser. When you open the other link, it checks the login information from the cookie. If desired value found in
Here are the changes to be done:
WEB CONFIG
We need to configure out web config file first. Both the web config files should contain same machine validation key, decryption key and validation. Something like this:
<machineKeyvalidationKey=”282487E295028E59B8F411ACB689CCD6F39DDD21E6055A3EE480424315994760A
DF21B580D8587DB675FA02F79167413044E25309CCCDB647174D5B3D0DD9141″
decryptionKey=”8B6697227CBCA902B1A0925D40FAA00B353F2DF4359D2099″
validation=”SHA1″ />
IIS
In IIS->Directory security tab add the “ASPNET Machine Account” user and set the full rights.
CODE
After successful login in both projects:
if (login_Successful)
{
//Create a new cookie, passing the name into the constructor
HttpCookie cookie = new HttpCookie(“strCookieName”);
//Set the cookies value
cookie.Value =”set_cookie_value”;
//Set the cookie to expire in 5 minute
DateTime dtNow = DateTime.Now;
TimeSpan tsMinute = new TimeSpan(0, 0, 5, 0);
cookie.Expires = dtNow + tsMinute;
//Add the cookie
Response.Cookies.Add(cookie);
Response.Write(“Cookie written. “);
}
on page load before
protected void Page_Load(object sender, EventArgs e)
{
//Grab the cookie
HttpCookie cookie = Request.Cookies[“strCookieName”];
//Check to make sure the cookie exists
if (cookie != null)
{
ReadCookie();
}
else
{
lblCookie.Text = “Cookie not found. “;
}
}
protected void ReadCookie()
{
//Get the cookie name the user entered
//Grab the cookie
HttpCookie cookie = Request.Cookies[“strCookieName”];
//Check to make sure the cookie exists
if (cookie == null)
{
lblCookie.Text = “Cookie not found. “;
}
else
{
//Write the cookie value
String strCookieValue = cookie.Value.ToString();
lblCookie.Text = “The cookie contains: ” + strCookieValue + “”;
}
}
Now test the application either on local web server or any domain, SSO should work using Cookie.
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