MacGPG: Inability to use smart card reader pinpad.

Anonymous Coward's Avatar

Anonymous Coward

12 Feb, 2018 06:11 PM

Which of our tools is giving you problems? I have an issue with pinentry-mac. I have a smartcard and a smartcard reader with a keypad. When I try to perform an operation on the card, the PIN entered on the computer keyboard works, but the pin entered on the smartcard reader gets ignored.

I am having an issue similar to the one at, except that I cannot use the reader keypad at all (whether I run gpg from the terminal or not). I have the Gemalto PC pinpad reader, which has a physical keyboard for PIN entry.

Could you consider adding support for this on GPGTools? Gemalto provides some sample PIN entry code which may be useful:

  1. 1 Posted by Anonymous Cowar... on 23 Feb, 2018 10:42 PM

    Anonymous Coward 's Avatar


    I have managed to resolve this issue, but fixing it globally it requires some changes to GPG Tools.

    The first thing I noticed is that whilst scdaemon was using the PCSC driver for my reader on macOS, scdaemon on Linux and Windows was using the internal CCID driver. My reader pinpad works with the CCID driver, but not quite with the PCSC driver in my tests (well, certainly not in macOS Sierra). Unfortunately, it seems like the scdaemon distributed with GPG Tools doesn't have CCID support (which in turn needs libusb). Then, the other issue is that the CCID driver won't work if is running, which runs by default on my system.

    So, the fix was:
    1. Compile my own version of scdaemon with CCID support. This requires libusb.
    2. Ensure that is not running. This service can be disabled, or it can be manually stopped / killed. If the latter, reconnecting the reader restarts the service.

    Would it be possible to include CCID support in a future GPG Tools release?

  2. Support Staff 2 Posted by Steve on 22 Mar, 2018 03:23 PM

    Steve's Avatar

    Hi Anonymous Coward,

    welcome to the GPGTools support platform. Sorry you are having problems using GPG Suite.

    Unfortunately smart card support on macOS is pretty buggy at the moment, since gnupg doesn't use the macOS system API (which is also buggy) but its own. We have recently added ccid support to our build of GnuPG, which wasn't present in the last official release.

    Could you please download and install our latest hotfix GPG Suite and see if that solves your problem.

    All the best,

    Disclaimer: This is a development version which has not been thoroughly tested yet - bugs or crashes are to be expected. Thanks for helping us test.

  3. 3 Posted by Anonymous Cowar... on 08 May, 2018 07:24 PM

    Anonymous Coward's Avatar

    The nightly build did indeed resolve the issue, for so long as remains disabled. I suppose this is the best that can be done without having GPG use the macOS API.


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