On Tue, 05 Jul 2022 17:44:14 -0500 Matthias Maier wrote: > I think this is an issue with the Hardware token and not with the > userland libraries and tools.
I too tried with a YubiKey 5 (Firmware 5.4.3). The signature was fine with those. So it looks indeed likely that this is a firmware bug that was fixed. Ansgar