When a Federal Agency adds one or several optional feature listed in the Revision History to their PIV cards, it is necessary for client applications to upgrade the PIV Middleware accordingly. This will enable the PIV Middleware to recognize and process the new data objects and/or feature.
Where maximum interoperability is required, it may be necessary to upgrade to SP 800-73-2 based PIV Middleware. Only SP 800-73-2 based PIV Middleware fully support all capabilities outlined in the Revision History. The previous version of the PIV Middleware (SP 800-73-1) are unaware of SP 800-73-2 features and thus have the following limitations:
Do not recognize the PIV Discovery Objects and thus are unable to use the Global PIN for PIV cards with Global PIN enabled.
Cannot query the PIVMiddleware version function.
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