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We have been chasing down an odd problem with the RHCS Token Management System smart card client. There has been unexplained failures to complete a secure channel with certain scp03 and scp01 tokens. This has been manifested as a failed External Authentication step.

After investigation it turned out that pcsc-lite and pcsc-lite-ccid latest versions on el 8.4 was allowing the problem to happen. When the packages were downgraded to an earlier version, the problem went away.

Further investigation revealed that the only change between the two was making the global reader array structure 32 entries instead of 16. Also it became apparent that any value other than 32 made the problem go away.

Thus we propose to make this array size 48.
This change will be of little consequence to pcsc-lite itself and help up with our RHCS token management issue as well.





Additional info:

We will also have a similar bug for pcsc-lite, since this constant is used in a global array in that component as well.

Related pcsc-lite bug: https://bugzilla.redhat.com/show_bug.cgi?id=1970555

Bob, please make sure to clone this also to RHEL9 (or should I do that?) and Fedora. We do not want to spend another months and break another cards in future.