OSX 10.10 has many known issues regarding PC/SC compatibility. See Ludovic
Rousseau's blog which illustrates some issues:
http://ludovicrousseau.blogspot.com/2014/12/os-x-yosemite-and-smart-cards-known-bugs.html
On Mon, Dec 15, 2014, 8:45 PM Florin Andrei wrote:
> I'm generating and storing ssh
I'm generating and storing ssh keys on smartcards, and I use gpg-agent
in ssh-agent emulation mode for authentication. This is what I have in
gpg-agent.conf:
pinentry-program [various pinentry apps]
enable-ssh-support
write-env-file
use-standard-socket
default-cache-ttl 600
max-cache-ttl 7200
