Read form authentication cookie from asp.net code behind

Question

We know that form authentication cookie is encrypted. so how to read the form authentication cookie content from my code behind.

if (Request.Cookies[".ASPXAUTH"] != null) { HttpCookie myCookie = new HttpCookie(".ASPXAUTH"); }

Possible duplicate stackoverflow.com/questions/2921387/…

KnowledgeDude
– KnowledgeDude

2011-08-28 10:16:42 +00:00
Commented Aug 28, 2011 at 10:16 — KnowledgeDude
– KnowledgeDude, Commented Aug 28, 2011 at 10:16

Zach S. · Accepted Answer · 2016-03-21 19:47:17Z

87

You can access the ticket with the Decrypt method provided by FormsAuthentication

HttpCookie authCookie = Request.Cookies[FormsAuthentication.FormsCookieName]; FormsAuthenticationTicket ticket = FormsAuthentication.Decrypt(authCookie.Value); string cookiePath = ticket.CookiePath; DateTime expiration = ticket.Expiration; bool expired = ticket.Expired; bool isPersistent = ticket.IsPersistent; DateTime issueDate = ticket.IssueDate; string name = ticket.Name; string userData = ticket.UserData; int version = ticket.Version;

edited Mar 21, 2016 at 19:47

Zach S.

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answered Aug 28, 2011 at 12:05

RyanW

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5 Comments

Thomas Over a year ago

How to extract data from ticket....suppose i create auth cookie like below one way. FormsAuthenticationTicket ticket = new FormsAuthenticationTicket( 1, username, DateTime.Now, DateTime.Now.AddMinutes(30), isPersistent, userData, FormsAuthentication.FormsCookiePath); so how get the above data from ticket after decrypt ? plzz guide me.......thanks

RyanW Over a year ago

After decrypt, you can access properties directly on the ticket. This shows the list of properties: msdn.microsoft.com/en-us/library/… . I updated the answer with an example of accessing the data in the ticket.

Raghav Over a year ago

just a typo: ticket.IsPersistant should be ticket.IsPersistent

Jason Parker Over a year ago

Thanks for this. Also, I believe on last line, version should be int, not string. But I am using ASP.NET 4.5....

Himalaya Garg Over a year ago

This is brilliant

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