“Hardware problem” with OpenPGP smart card

[Matthias Apitz]

On Sun, 6 Dec 2020 16:34:40 +0100, Nicolas Boullis wrote:
> Hi,
>
> On Sun, Dec 06, 2020 at 12:37:19PM +0100, Werner Koch wrote:
>> 
>> To make sure that this is really the card (or reader), I'd like to ask
>> you to put
>> 
>> --8<---------------cut here---------------start------------->8---
>> log-file /some/path/scd.log
>> verbose
>> debug cardio
>> --8<---------------cut here---------------end--------------->8---
>> 
>> into scdaemon.conf.  Kill scdaemon.conf and retry. You should see a line
>> with status code 0x6581 (EEPROM FAILURE) in response to a VERIFY (00 20
>> ... PIN) APDU or a PSO (00 2A ....) APDU.  If that is the case you are
>> probably out of luck.  It is a rare thing; iirc, I recall one other
>> report about a hardware failure.
>
> Thanks for your suggestion.
> I just tried it, and found, in the scd.log file:
>
> 2020-12-06 16:26:24 scdaemon[4732] DBG: send apdu: c=00 i=20 
> p1=00 p2=82 lc=8 le=-1 em=0
> 2020-12-06 16:26:24 scdaemon[4732] DBG:  raw apdu: 00 20 00 82 08 ***PIN***
> 2020-12-06 16:26:24 scdaemon[4732] DBG:  response: sw=6581  datalen=0
> 2020-12-06 16:26:24 scdaemon[4732] verify CHV2 failed: Hardware problem
> 2020-12-06 16:26:24 scdaemon[4732] operation decipher result: 
> Hardware problem
> 2020-12-06 16:26:24 scdaemon[4732] app_decipher failed: Hardware problem
>
> Do you think there is still a chance that the reader is at fault rather 
> than the smartcard?
> Any hope besides replacing the smartcard *and the subkeys*?
>
>

Testing a new reader dongle is the best option.

matthias


-- 
Matthias Apitz, ✉ guru at unixarea.de, http://www.unixarea.de/ +49-176-38902045
Public GnuPG key: http://www.unixarea.de/key.pub
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