The AdminFormDigest property of the SPGlobalAdmin class gets the security validation that is used for a request in a SharePoint Central Administration page.
A string that contains the security validation.
Unlike the security validation used in a page for working with site or list data, the security validation for a global administrative page has a built-in time-out of 30 minutes and is not configurable. Security validation cannot be disabled for global administrative pages.
Platforms: Microsoft Windows Server 2003
Security: Code Access Security