2011-11-01 15:16 AEST by Arthur Barrett - The :ssh: client protocol should support smartcard (FIPS 140 PIV) and the use of it should be documented.

Basically FIPS 140 PIV is the use of an RSA key on a smartcard that is accessed by a vendor specific API.  

Modified versions of Putty already exist, so the code/changes just needs to be ported over:
http://www.risacher.org/putty-cac/
or
http://www.joebar.ch/puttysc/

2011-11-01 15:21 AEST by Arthur Barrett - Note: if a customer required this immediately, it could probably be done using EXT.

2011-11-01 15:29 AEST by Arthur Barrett - CVSNT uses the plink source, not the full putty.  

2015-05-22 10:12 AEST by Arthur Barrett - Also see this article on using smartcards with Mac OS X:
https://support.apple.com/kb/PH13936?locale=en_AU&viewlocale=en_JO

Smart cards, such as U.S. Department of Defense Common Access Cards and the U.S. Personal Identity 
Verification (PIV) Cards, are access-control devices. You use a smart card to physically authenticate 
yourself in situations like these:

* Client-side authentication to PK-enabled websites (HTTPS)

* Remote access (VPN: L2TP/PPTP)

* Port-based Network Access Control (802.1X)

* Unlocking keychains (/usr/sbin/systemkeychain)

You must obtain the driver (Tokend) installer necessary to support the type of smart card in use from one 
of several open source or commercial third-party providers. For more information on tokend installers, 
smart cards, smart card software updates, or for discussion and support, see the SmartCard Services 
project on the MacOSForge.org website.