https://wiki.hackerspace.pl/projects:javacards https://lists.gnupg.org/pipermail/gnupg-users/2007-August/031547.html ,g coolkey https://github.com/martinpaljak ,g paxos erlang :gen_paxos/paxos_fsm :riak_ensemble :erlang-paxos libpaxos.sourceforge.net :github.com/andrewjstone/rafter CONIKS: https://coniks.cs.princeton.edu/about.html https://www.usenix.org/conference/usenixsecurity15/technical-sessions/presentation/melara https://freedom-to-tinker.com/2016/03/31/why-making-johnnys-key-management-transparent-is-so-challenging/ GOOG E2E: https://github.com/google/end-to-end PKCS#11: https://www.oasis-open.org/committees/tc_home.php?wg_abbrev=pkcs11 https://docs.oasis-open.org/pkcs11/pkcs11-base/v2.40/ Linux Kernel Crypto API https://kernel.org/doc/html/latest/crypto/index.html http://www.chronox.de/libkcapi.html U2F: https://www.yubico.com/about/background/fido/ https://fidoalliance.org/specifications/overview/ SSH Certificates: https://www.eldos.com/security/articles/2852.php?page=all