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</o:shapelayout></xml><![endif]--></head><body lang=EN-US link=blue vlink=purple><div class=WordSection1><p class=MsoNormal>Our tokend supports a PIN caching mechanism. On PIN caching expiry the user must be re-prompted for his/her PIN. We are currently unable to display a GUI from the tokend. This results in freeze or crash. <o:p></o:p></p><p class=MsoNormal>We have tried several different approaches including:<o:p></o:p></p><p class=MsoNormal style='text-indent:36.0pt'>On PIN caching expiry trying to force the tokend to reload the ACL so we can change the ACL on the PIN object to PwdPromptSubject so as to trigger a prompt by the caller. This fails as it looks like there is no way to change the ACLs on the PIN during the tokend lifecycle.<o:p></o:p></p><p class=MsoNormal style='text-indent:36.0pt'>Invoking a different component (that would prompt for the GUI) from the tokend . The IPC mechanism using standard MACOS XPC. We have tried the following components:<o:p></o:p></p><p class=MsoNormal style='margin-left:36.0pt;text-indent:36.0pt'>XPC service<o:p></o:p></p><p class=MsoNormal style='margin-left:36.0pt;text-indent:36.0pt'>Launch Agent<o:p></o:p></p><p class=MsoNormal style='margin-left:36.0pt;text-indent:36.0pt'>Daemon.<o:p></o:p></p><p class=MsoNormal>In all cases the tokend either fails to connect to the external component and/ or the external component can’t display a GUI either.<o:p></o:p></p><p class=MsoNormal>Our analysis is that the security context of the tokend prevents any possible architecture that would allow to prompt for a GUI. We’d like to confirm that statement.<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>Thanks<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal><o:p> </o:p></p></div></body></html>