PuTTY-CAC (Common Access Card) is a Windows terminal emulation technology that supports the Secure Shell (SSH) protocol to access remote systems. This is a modified version of PuTTY SC (Smart Card), which supports SmartCard authentication such as the Department of Defense Common Access Card (DoD CAC) and other x.509 certificates.

CAC-enabled Commercial or Gov't PC. Windows Administrator Rights. Some gov't PCs may still have installation issues even with Administrator Rights. Minimum PC specs: Intel 5th gen i3 or equivalent PC (not macOS compat.) 8GB RAM; Nvidia GTX 700 series.
Download and install the OS X Smartcard Services package The OS X Smartcard Services Package allows a Mac to read and communicate with a smart card. In order for your machine to recognize your CAC certificates and DoD websites as trusted, the installer will load the DoD CA certificates on OS X.

COMPATIBILITY:
– Can be used for CAC (Common Access Card).
– For all contact smart chip card operations like online-banking or digital signature: ActivClient, AKO, OWA, DKO, JKO, NKO, BOL, GKO, Marinenet, AF Portal, Pure Edge Viewer, ApproveIt, DCO, DTS, LPS, Disa Enterprise Email.

SPECIFICATION:
USB: 2.0
Card types: 5V, 3V and 1.8V Smart Cards, ICC ISO/IEC 7816 Class A, AB and C
Certifications Standards: PIV, EMS, ISO-7816 & EMV2 2000 Level 1, CE, FCC, VCCI and Microsoft WHQL
Operating System Compatibility: Windows 98/Me/2000/NT 4.0/XP/CE/Vista/7/8/8.1/10, Linux, Mac OS 10.10 and below

NOTE:
1.DOD and USG users need a third-party CAC Enabler program.
2.Java is necessary for MAC user. Please install Java firstly on Java’s official website.
3.SIM Card can be compatible with Windows Only.
4.If no disk drive, please download driver on our website (http://zoweetek.com/product-item/smart-card-reader-zw-12026-1/#tab-id-6) or contact us by email which there is seller service of the driver zip document.
5.The mini driver disk provided in the package can’t be used on slot-load drive, which lead to failure of reading it.

NOTES:

Between mid October 2019 and mid February 2020 everyone in the Army was migrated to use their PIV Authentication certificate for Email access. You no longer use the Email certificate for Enterprise Email.

Mac users who choose to upgrade (or already have upgraded) to Mac OS Catalina (10.15.x) or Big Sur (11.x.x) will need to uninstall all 3rd Party CAC enablers per https://militarycac.com/macuninstall.htm AND reenable the built in smart card ability (very bottom of macuninstall link above)

If you purchased your Mac with OS Catalina (10.15.x) or Big Sur (11.x.x) already installed, you can skip the uninstall part above and follow the instructions below.

Signing of PDFs should work in Mac OS Catalina (10.15.x) and Big Sur (11.x.x) by adjusting these settings.

Mac users with Mac OS 10.14.x and newer (with 64 bit-processor) can verify if their CAC is blocked by using the Smart Card Utility app https://apps.apple.com/us/app/smart-card-utility/id1444710309?mt=12

Follow Tables 1 through 4 below:

PLEASE READ the preliminary Information before you start:

Preliminary Information 1: Restart your computer after installing the CAC enabler before trying to access the CAC enabled site

Preliminary Information 2: Installing multiple enabling programs will cause your system to NOT work. Here's how to uninstall CAC enablers.

Preliminary Information 3: The CACkey CAC enabler will ask for a 'keychain password' (like the image below). You need to enter your CAC PIN. Make sure if it asks for your Keychain password after you select your CAC certificate, that you use your CAC [6-8 digit / all number] PIN.

If you block your CAC, you'll have to visit an ID card office to get it unblocked. PKard has the capability to show you when your CAC is blocked. Mac OS 10.15.x and 10.14.x can download this app to verify if their card is blocked: https://apps.apple.com/us/app/smart-card-utility/id1444710309?mt=12

Table 1: See which CAC enabling program will work with your version of Mac OS

Once you've decided, go to Table 2

Download Cac Enabler Mac

Compatible with:	CAC Key	PKard	Mac OS Big Sur Built In	Mac OS Catalina Built In	Mac OS Mojave Built In	Mac OS High Sierra Built In	Mac OS Sierra Built In	Open SC	Smart Card Service	Activ Client for Mac	Trusted End Node Security (TENS)
Big Sur (11) (M1 chip)	N/A	N/A	N/A	N/A
Big Sur (11) (Intel chip)	Note6	N/A	N/A	N/A	N/A
Catalina (10.15.x)	N/A	Note6	N/A	N/A	N/A		Note7
Mojave (10.14.x)	Note3	Note3	N/A	N/A	Note3	N/A	N/A
High Sierra (10.13.x)	Note3 Note5	Note3 Note5	N/A	N/A	N/A	Note3	N/A	Note4
Sierra (10.12.x)	Note3 Note5	Note2 Note5	N/A	N/A	N/A	N/A	Note3
El Capitan (10.11.x)	N/A	N/A	N/A	N/A	N/A
Yosemite (10.10.x)	N/A	N/A	N/A	N/A	N/A
Mavericks (10.9.x)	N/A	N/A	N/A	N/A	N/A
Mountain Lion (10.8.x)	N/A	N/A	N/A	N/A	N/A
Lion (10.7.x)	N/A	N/A	N/A	N/A	N/A
Snow Leopard (10.6.x)	N/A	N/A	N/A	N/A	N/A
Leopard (10.5.x)	N/A	N/A	N/A	N/A	N/A		Note1

Note1: Computer must have an Intel processor, will not work with a PPC processor Cac

Note2:Need version 1.7 (or above)

Note3: Apple computers with Mac OS Big Sur (Intel), Catalina, Mojave, High Sierra, and Sierra have a 'built in Smart Card ability,' meaning 3rd party CAC enablers are no longer needed. Please uninstall all CAC enablers you have installed

Note4: One person has informed me this works for him, but NOT when using Safari. Only using Chrome.

Note5: With Mac OS Sierra and High Sierra, you must use Google Chrome. Safari is not 'CAC compatible.' You may also update your computer to Mojave (or newer), then use Safari again.

Note6: Mac OS Catalina will not work with 3rd party CAC enablers installed. Please uninstall all CAC enablers you have installed. INFORMATION: There was an issue with 10.15.4. If this is the version you have, please update to 10.15.5 or above

Note7: I have a few reports that this enabler works with Mac OS Catalina

Table 2: Verify the CAC enabling program you selected above will work with your specific CAC.

Once you've decided, go to Table 3

Compatible with:	CAC Key	PKard	Mac OS Big Sur Built In	Mac OS Catalina Built In	Mac OS Mojave Built In	Mac OS High Sierra Built In	Mac OS Sierra Built In	Open SC	Smart Card Services	Activ Client for Mac	Trusted End Node Security (TENS)
G+D FIPS 201 SCE 3.2