A script to install gnupg2 with the GPGTools scdaemon shared-access patch

• Install MacPorts
• Sanity check the script in this repo.
• If you trust what you read execute:
  • curl https://raw.githubusercontent.com/felddy/gnupg-scdaemon-shared-access/master/install_gnupg2.sh | sudo bash
• Add shared-access to your .gnupg/scdaemon.conf
• Insert your token.
• killall -9 gpg-agent; gpg --card-status

On Mac OS X, tokend connects to a token immediately upon its insertion, which is necessary to present the token as a (PIV) keychain in the Keychain Access, and make its keys/certificates otherwise available to the Mac OS X applications.

However, when you try to use gpg, scdaemon detects that the token is already being used - and refuses to connect to it. GPGTools patched scdaemon to support a shared-access mode, but the pull request was not accepted upstream.

This script will apply that patch to a MacPorts Portfile and install gnupg2 with the shared functionality.

For more information see:

• https://dev.gnupg.org/T3267
• OpenSC/OpenSC#953
• https://github.com/GPGTools/MacGPG2/blob/dev/patches/gnupg/scdaemon_shared-access.patch