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CAC (Common Access Card) help for your Personal Mac Computer


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Setting up Firefox using CACKey (only for Mac's prior to Mac OS Catalina (10.15))

NOTE:  The video mentions a step no longer needed, that is adding a config statement "security.ssl.allow_unrestricted_renego_everywhere_temporarily_available_pref"  This is NO LONGER REQUIRED.

0.7.8 CACKey packages download links

NOTE:  You do not have to install Firefox to use CACKey, the video shows people who want to use Firefox and the additional step needed to make it work.  CACKey works with Safari and Google Chrome with no additional configuring.

Big Sur (11.x) DOES NOT WORK

Catalina (10.15) DOES NOT WORK

Mojave (10.14.x) (ONLY after disabling built in ability),

High Sierra (10.13.x) (ONLY after disabling built in ability),

Sierra (10.12.x) (ONLY after disabling built in ability),

El Capitan (10.11.x),

Yosemite (10.10.x),

Mavericks (10.9.x), &

Mountain Lion (10.8.x)

NOTE:  You may receive the following error message.  "Can't be opened because it is from an unidentified developer." 

.CACKey error

NOTE continued: Hold the control key [on your keyboard] when clicking the .pkg file [with your mouse], select [the word] Open


M***DO NOT install CACkey if running Mac OS Catalina***


10.14.x (Mojave) Only Recommended after disabling built in Smart Card Ability

10.13.x (High Sierra) Only Recommended after disabling built in Smart Card Ability
Mac OS Mojave image  MacOS High Sierra

10.12.x (Sierra) Only Recommended after disabling built in Smart Card Ability

10.11.x (El Capitan)

Mac OS Sierra El Capitan

10.10.x (Yosemite)

10.9.x (Mavericks)

Yosemite image Mavericks logo
10.8.x (Mountain Lion) 10.7.x (Lion)  
Mountain Lion image Mac OS X Lion image
10.6.x (Snow Leopard) 10.5.x (Leopard)
Mac OS X Snow Leopard image Mac OS X Leopard image



If you want to use Firefox, here is the specific location mentioned in the video above.

(If you only use Safari or Chrome, you can skip this step).


Navigate to your hard drive / Library / CACKey / libcackey_g.dylib



Updating the firmware on an SCR-331 CAC reader using TENS / LPS on your Mac

How to create a bootable CD from the .iso file?





Videos created by the ITRC of the US Air Force Judge Advocate General:

CAC Enable your Mac

Avoid locking your CAC on your Mac

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Last Update or Review:  Monday, 10 May 2021 19:48 hrs


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