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How to debug Yubikey communication

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  How to debug Yubikey communication Kamil Jońca <kjonca@o2.pl> - 2021-11-13 18:50 +0100
    Re: How to debug Yubikey communication Teemu Likonen <tlikonen@iki.fi> - 2021-11-13 20:10 +0100

#242139 — How to debug Yubikey communication

I have strange problem.

I use Yubikey 5 with OATH and gpg key applications configured on it.

In general it works (i.e. I got oath codes and can use gpg to
encrypt/decrypt messages.)
But when this key is in usb port it "gold circle" lights withut any
visible reason.

How can I debug communication with this key?
I tried something like:

find /dev/ -mmin -10 |grep -v '^/dev/pts'|grep -v -x '/dev/'|xargs -d '\n' inotifywait -m -r --format '%T %w <%f> %e' --timefmt '%Y%m%d %H%M%S' /dev/hidraw2
(after putting yubikey into usb port) but without success

Any ideas?
KJ


-- 
http://wolnelektury.pl/wesprzyj/teraz/

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#242145

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* 2021-11-13 18:23:13+0100, Kamil Jońca wrote:

> I use Yubikey 5 with OATH and gpg key applications configured on it.

> How can I debug communication with this key?

Edit ~/.gnupg/scdaemon.conf file and add lines there:

    debug-level 8
    log-file /tmp/scdaemon.log

You should probably read some of the "man scdaemon" manual too.

I don't know about your actual problem and probably can't help with PGP
smart cards. In addition to this mailing list gnupg-users list is a good
option too.

    https://lists.gnupg.org/mailman/listinfo/gnupg-users

-- 
/// Teemu Likonen - .-.. https://www.iki.fi/tlikonen/
// OpenPGP: 6965F03973F0D4CA22B9410F0F2CAE0E07608462

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