Support ACKNOWLEDGE button for OpenPGP card and/or Token
Closed, ResolvedPublic


In OpenPGP card V3 specification, push button to acknowledge PSO/AUTH operation can be supported.
This requires a bit of enhancement in CCID protocol, if we want to implement the feature with better support by host side software.
The idea is: enhancing "Timer extension" request with a flag bit (non-standard yet) to express user I/O, host side can have information if it is waiting computation or user interaction.

gniibe created this task.Dec 11 2017, 7:35 AM
gniibe mentioned this in E237: Weekly Standup.
gniibe closed this task as Resolved.Feb 19 2019, 2:50 AM

Gnuk implements the feature, and newer GnuPG shows a dialog to request pushing the ack button.