It’s about time I updated my instructions for installing and running an EncFS filesystem on Mac OS X, synchronised to Dropbox. Use a combination of FUSE for OS X, EncFS, Dropbox and DropSec to create and maintain a super-secure filesystem which syncs with the cloud, while maintaining
- Download and install FUSE for OS X (the MacFUSE compatibility layer is not required)
- If you don’t have it already, install the Homebrew package manager
- Download and install EncFS (v1.7.5_1 at time of writing) and any dependencies, it’s as easy as ‘brew install homebrew/fuse/encfs‘
- Download DropSec, extract DropSec.app from the archive and copy it to your Applications folder
To create a new encrypted volume (stored locally at first to prevent your EncFS key from being synchronised with Dropbox):
Answer ‘yes’ when prompted to create the new folders and choose ‘p’ for pre-configured paranoia mode (256-bit AES encryption). Enter a secure EncFS password when prompted and you’re done. Now the filesystem has been created we can deal with securing the key.
The commands above move your key from the EncFS filesystem into a hidden folder in your (local) home directory Now move the entire ~/Desktop/_Encrypted
folder (minus your key) into your Dropbox:
EncFS provides an encrypted filesystem in user-space. It runs without any special permissions and uses the FUSE library and Linux or Mac kernel module to provide the filesystem interface. You can find links to source and binary releases below. EncFS is open source software, licensed under the GPL.
To mount the secure filesystem run the DropSec app from your Application folder. The first time you run DropSec it will prompt you for your EncFS password which it stores in your local login keychain. The password must match the secure password you set earlier.
When the secure volume is mounted a DropSec folder with a padlock icon will appear on your desktop. If it doesn’t, check that you have ‘Show Connected servers’ checked in Finder preferences.
- Since EncFS exists on many platforms, you can access your data from a Windows PC, from an Apple computer, from Linux (using the built-in EncFS), or even from an Android device (using Cryptonite). Although EncFSMP is an open source project and its source code is released under the MIT license, it contains a closed-source component.
- Dec 22, 2018 Download EncFSMP for free. Mount EncFS folders - multiplatform style. EncFSMP can create, mount and edit EncFS (encrypted file system) folders on Windows and Mac OS X.
- Encfs mac free download. EncFSMP EncFSMP can create, mount and edit EncFS (encrypted file system) folders on Windows and Mac OS X.
- 1.7.4 Version of encfs ( has problems with links on Mac OS X. This is a script to get a working version of encfs on Mavericks. Checkout git version 36d6c6cbd for a version that.
To mount or unmount the encrypted volume simply run the DropSec app. For convenience copy it to your Mac OS dock for quick access.
NOTE:
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) 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) already installed, you can skip the uninstall part above and follow the instructions below.
6 'high level' steps needed, follow down the page to make this a painless systematic process
1. | Is your CAC reader 'Mac friendly'? |
2. | Can your Mac 'see' the reader? |
3. | Verify which version of Mac OS you have |
4. | Figure out which CAC (ID card) you have |
5. | Install the DoD certificates |
5a. | Additional DoD certificate installation instructions for Firefox users |
6. | Decide which CAC enabler you want to use (except for 10.12-.15) |
Step 1: Is your CAC reader Mac friendly?
Visit the USB Readers page to verify the CAC reader you have is Mac friendly.
Visit the USB-C Readers page to verify the CAC reader you have is Mac friendly.
'Some, not all' CAC readers may need to have a driver installed to make it work.
NOTE: Readers such as: SCR-331 & SCR-3500A may need a firmware update (NO OTHER Readers need firmware updates).
Information about these specific readers are in Step 2
Step 2: Can your Mac 'see' the reader?
Plug the CAC reader into an open USB port before proceeding, give it a few moments to install
Step 2a: Click the Apple Icon in the upper left corner of the desktop, select 'About This Mac'
Step 2b: Click 'System Report...' (button)
Step 2c: Verify the CAC reader shows in Hardware, USB, under USB Device Tree. Different readers will show differently, most readers have no problem in this step. See Step 2c1 for specific reader issues.
Step 2c1: Verify firmware version on your SCR-331 or GSR-202, 202V, 203 CAC, or SCR-3500a reader. If you have a reader other than these 5, Proceed directly to step 3
Step 2c1a-SCR-331 reader
If your reader does not look like this, go to the next step.
In the 'Hardware' drop down, click 'USB.' On the right side of the screen under 'USB Device Tree' the window will display all hardware plugged into the USB ports on your Mac. Look for “SCRx31 USB Smart Card Reader.” If the Smart Card reader is present, look at 'Version' in the lower right corner of this box: If you have a number below 5.18, you need to update your firmware to 5.25. If you are already at 5.18 or 5.25, your reader is installed on your system, and no further hardware changes are required. You can now Quit System Profiler and continue to Step 3.
Step 2c1b-SCR-3500A reader
If you have the SCR3500A P/N:905430-1 CAC reader,you may need to install this driver, as the one that installs automatically will not work on most Macs. Hold the control key [on your keyboard] when clicking the .pkg file [with your mouse], select [the word] Open
Step 3: Verify which version of MacOS do you have?
(You need to know this information for step 6)
Step 3a: Click the Apple Icon in the upper left corner of your desktop and select 'About This Mac'
Step 3b: Look below Mac OS X for: Example: Version 10.X.X.
Step 4: Figure out which CAC (ID Card) you have
(You need to know this information for step 6)
Look at the top back of your ID card for these card types. If you have any version other than the six shown below, you need to visit an ID card office and have it replaced. All CACs [other than these six] were supposed to be replaced prior to 1 October 2012.
Find out how to flip card over video
Step 5: Install the DoD certificates (for Safari and Chrome Users)
Go to Keychain Access
Click: Go (top of screen), Utilities, double click Keychain Access.app
(You can also type: keychain access using Spotlight (this is my preferred method))
Select login (under Keychains),and All Items (under Category).
Download the 5 files via links below (you may need to <ctrl> click, select Download Linked File As... on each link) Save to your downloads folder
Please know... IF You have any DoD certificates already located in your keychain access, you will need to delete them prior to running the AllCerts.p7b file below.
https://militarycac.com/maccerts/AllCerts.p7b,
https://militarycac.com/maccerts/RootCert2.cer,
https://militarycac.com/maccerts/RootCert3.cer,
https://militarycac.com/maccerts/RootCert4.cer, and
Double click each of the files to install certificates into the login section of keychain
Select the Kind column, verify the arrow is pointing up, scroll down to certificate, look for all of the following certificates:
DOD EMAIL CA-33 through DOD EMAIL CA-34,
DOD EMAIL CA-39 through DOD EMAIL CA-44,
DOD EMAIL CA-49 through DOD EMAIL CA-52,
DOD EMAIL CA-59,
Encfs For Mac Pro
DOD ID CA-33 through DOD ID CA-34,
DOD ID CA-39 through DOD ID CA-44,
DOD ID CA-49 through DOD ID CA-52,
DOD ID CA-59
DOD ID SW CA-35 through DOD ID SW CA-38,
DOD ID SW CA-45 through DOD ID SW CA-48,
DoD Root CA 2 through DoD Root CA 5,
DOD SW CA-53 through DOD SW CA-58, and
DOD SW CA-60 through DOD SW CA-61
NOTE: If you are missing any of the above certificates, you have 2 choices,
1. Delete all of them, and re-run the 5 files above, or
2. Download the allcerts.zip file and install each of the certificates you are missing individually.
Errors:
Error 100001 Solution
Error 100013 Solution
You may notice some of the certificates will have a red circle with a white X . This means your computer does not trust those certificates
You need to manually trust the DoD Root CA 2, 3, 4, & 5 certificates
Double click each of the DoD Root CA certificates, select the triangle next to Trust, in the When using this certificate: select Always Trust, repeat until all 4 do not have the red circle with a white X.
You may be prompted to enter computer password when you close the window
Once you select Always Trust, your icon will have a light blue circle with a white + on it.
The 'bad certs' that have caused problems for Windows users may show up in the keychain access section on some Macs. These need to be deleted / moved to trash.
The DoD Root CA 2 & 3 you are removing has a light blue frame, leave the yellow frame version. The icons may or may not have a red circle with the white x
or | DoD Interoperability Root CA 1 or CA 2 | certificate | |
DoD Root CA 2 or 3 (light blue frame ONLY) | certificate | ||
or | Federal Bridge CA 2016 or 2013 | certificate | |
or | Federal Common Policy CA | certificate | |
or | or | SHA-1 Federal Root CA G2 | certificate |
or | US DoD CCEB Interoperability Root CA 1 | certificate |
If you have tried accessing CAC enabled sites prior to following these instructions, please go through this page before proceeding
Clearing the keychain (opens a new page)
Please come back to this page to continue installation instructions.
Step 5a: DoD certificate installation instructions for Firefox users
NOTE: Firefox will not work on Catalina (10.15.x), or last 4 versions of Mac OS if using the native Apple smartcard ability
Download AllCerts.zip, [remember where you save it].
double click the allcerts.zip file (it'll automatically extract into a new folder)
Option 1 to install the certificates (semi automated):
From inside the AllCerts extracted folder, select all of the certificates
<control> click (or Right click) the selected certificates, select Open With, Other...
In the Enable (selection box), change to All Applications
Select Firefox, then Open
You will see several dozen browser tabs open up, let it open as many as it wants..
You will eventually start seeing either of the 2 messages shown next
If the certificate is not already in Firefox, a window will pop up stating 'You have been asked to trust a new Certificate Authority (CA).'
Check all three boxes to allow the certificate to: identify websites, identify email users, and identify software developers
or
'Alert This certificate is already installed as a certificate authority.' Click OK
Once you've added all of the certificates...
• Click Firefox (word) (upper left of your screen)
• Preferences
• Advanced (tab)
• Press Network under the Advanced Tab
• In the Cached Web Content section, click Clear Now (button).
• Quit Firefox and restart it
Option 2 to install the certificates (very tedious manual):
Click Firefox (word) (upper left of your screen)
Preferences
Advanced (tab on left side of screen)
Certificates (tab)
View Certificates (button)
Authorities (tab)
Import (button)
Browse to the DoD certificates (AllCerts) extracted folder you downloaded and extracted above.
Note: You have to do this step for every single certificate
Note2: If the certificate is already in Firefox, a window will pop up stating: 'Alert This certificate is already installed as a certificate authority (CA).' Click OK
Note3: If the certificate is not already in Firefox, a window will pop up stating 'You have been asked to trust a new Certificate Authority (CA).'
Check all three boxes to allow the certificate to: identify websites, identify email users, and identify software developers
Once you've added all of the certificates...
• Click Firefox (word) (upper left of your screen)
• Preferences
• Advanced (tab)
• Press Network under the Advanced Tab
• In the Cached Web Content section, click Clear Now (button).
• Quit Firefox and restart it
Step 6: Decide which CAC enabler you can / want to use
Only for Mac El Capitan (10.11.x or older)
After installing the CAC enabler, restart the computer and go to a CAC enabled website
NOTE: Mac OS Sierra (10.12.x), High Sierra (10.13.x), Mojave (10.14.x) or Catalina (10.15.x) computers no longer need a CAC Enabler.
Try to access the CAC enabled site you need to access now
Encfs For Macbook Air
Mac support provided by: Michael Danberry