This project implements the OpenPGP card functionality used on the SIGILANCE OpenPGP smart card that is sold by Panchromatic, LLC.
This project is based on the ykneo-openpgp applet, which is in turn based on the Java Card OpenPGP Card project made by Joeri de Ruiter. Commits to this project come primarily from Joey Castillo, who maintains his own development repository here. It is mirrored here to provide a consistent permalink to the code that is shipped on SIGILANCE OpenPGP smart cards.
While the modifications to the upstream project were once minor, the applet’s codebase has matured significantly since that fork was made. In collaboration with the community, the Yubico fork has fixed a critical security vulnerability, incorporated bug fixes, and cut the applet’s transient memory usage in half.
The SIGILANCE fork of the Yubico project consists of feature enhancements — most significantly, support for private use data objects — as well as one minor change to set the ATR of the smart card, a formality that is not necessary on the Yubikey NEO hardware.
The upstream project was released under the GPLv2+ and our fork uses the same license. All of our changes are released under the same license. See the file LICENSE for more information.
See doc/Building.txt for information on how to build the source code and doc/InstallCAPFile.txt on how to install it.
Tutorials for setting up the NFC-enabled SIGILANCE OpenPGP smart card using OpenKeychain on Android are available at the SIGILANCE documentation page, including examples for creating a new identity, copying an existing identity onto a smart card, and adding smart card-compatible keys to an existing identity.
The OpenPGP Card applet can also be used with GnuPG, and you may refer to its documentation for a full reference
Yubico also maintains tutorials on other applet-related topics at developers.yubico.com/PGP, for example card editing and key import.