If you encounter real world certificates with these parameters we can bump up the priority.

I think I can understand you, too much complexity.

See this comment which is related to T4538:

Also works in VSD-beta-478

Test on a dedicated Windows box (T 460, i5-6300U@2.40GHz, harddisk):

Overall effect of these changes tested on a small Windows VM is only 47 -> 26 seconds. Did also tests with --kbx-buffer-size but that does not make it better than the default, either.

works, the Root-CA of the above example is only shown once any more. Gpg4win-Beta-50

Will be available in 2.2.45 and 2.5.2

Now we are at 4 seconds. Available in master and 2.2.

With that patch we are down to about 6 seconds.

Did a quick manual test import and encryption/decryption with VS-Desktop-3.2.93.1-Beta with the relevant test-X509 certificate.
Works as expected.

I made a ticket on bugzilla with ready-made tests for S/MIME, but on close inspection a different structure appears for S/MIME and another for qualified signature (openssl could not verify token extracted from CAdES-BASELINE-T signature). However, these tests can be very useful.

FWIW, I received that mail but I hope that this bug is at least fixed with today's fix for T7213. Thus not re-opening.

This patch has a new fix for T5793 which is now only used where needed.

I don't think that we can do much manual testing here because we have all test cases anyway in the regression test suite and our local non-public regression tests (which has the p12 files we are not allowed to publish)

Alright. Done for master; backport will come soon.

The garbled data might be due to a bug in dumpasn1 (version 2021-02-12).

Can't find a mail - closing the ticket. Feel free to reopen or send me a mail to werner dot koch at gnupg.org but replace the org by com.

Yes, I think we should support this. Also X448. Thanks for the report and the samples.

Right. I think this task inherited the assignee from its parent task.

I've sent you an email about it. It might have html elements due to markdown-here.

Sorry, for not following up earlier. Can you please do me a favor and run the last tests again, this time adding -v and --debug 1 to the invocation? Feel free to forward the output to my private address is that is easier (wk at gnupg.org).