SPFormsClaimProvider class
SharePoint 2013
System.Object
Microsoft.SharePoint.Administration.Claims.SPClaimProvider
Microsoft.SharePoint.Administration.Claims.SPFormsClaimProvider
Microsoft.SharePoint.Administration.Claims.SPClaimProvider
Microsoft.SharePoint.Administration.Claims.SPFormsClaimProvider
Assembly: Microsoft.SharePoint (in Microsoft.SharePoint.dll)
Membership based claims use the Name claim type that specifies the membership name as the claim value and the String() claim value type.Roles based claims use the Role() claim type that specifies the group security identifier (SID) as the claim value and the String() claim value type. This keeps the values and value types generated during an NTLM based claims log in synchronized with the claim types,