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keepassxc

Installation[edit]

Recommended to be installed inside an offline VM (vault). [1] When you want to keepassxc as replacement for Google Authenticator (actually TTOP, Time based One Time Password) Two Factor Authentication (2FA)) then a Debian based VM is more suitable than a Whonix-Workstation based VM. [2]

Yubikey related. Users not using yubikey should skip this.

sudo apt-get install yubikey-personalization yubikey-personalization-gui

Get keepassxc signing key. [3]

gpg --recv-keys C1E4CBA3AD78D3AFD894F9E0B7A66F03B59076A8

Download keepassxc.

curl --location --remote-name --tlsv1.2 https://github.com/keepassxreboot/keepassxc/releases/download/2.3.4/KeePassXC-2.3.4-x86_64.AppImage

Download keepassxc signature.

curl --location --remote-name --tlsv1.2 https://github.com/keepassxreboot/keepassxc/releases/download/2.3.4/KeePassXC-2.3.4-x86_64.AppImage.sig

Verify keepassxc signature.

gpg --verify KeePassXC*.sig

Should show the following.

gpg: assuming signed data in 'KeePassXC-2.3.4-x86_64.AppImage'
gpg: Signature made Thu 23 Aug 2018 01:31:30 PM EDT
gpg:                using RSA key C1E4CBA3AD78D3AFD894F9E0B7A66F03B59076A8
gpg: Good signature from "KeePassXC Release <release@keepassxc.org>" [unknown]
gpg: WARNING: This key is not certified with a trusted signature!
gpg:          There is no indication that the signature belongs to the owner.
Primary key fingerprint: BF5A 669F 2272 CF43 24C1  FDA8 CFB4 C216 6397 D0D2
     Subkey fingerprint: C1E4 CBA3 AD78 D3AF D894  F9E0 B7A6 6F03 B590 76A8

Make keepassxc executable.

chmod +x KeePassXC*

[4]

Installation is now complete.

Autostart[edit]

Optional. If you like to autostart keepassxc.

Create folder ~/.config/autostart/.

mkdir -p  ~/.config/autostart/

Create a file ~/.config/autostart/keepassxc.desktop.

Paste the following content.

[Desktop Entry]
Type=Application
Name=keepassxc
Exec=/home/user/KeePassXC-2.3.4-x86_64.AppImage

Save.

The process is now complete.

Usage[edit]

To start.

./KeePassXC*

First run question: either answer is ok.

Create a new database.

Default file name Passwords.kdbx is ok.

If you are using Full Disk Encryption you might want to use a very easy password. Up to you.

Left click one time on root

Then go to menu -> entries -> Add new entry -> any name name as test -> ok

right click on test -> time based on time password -> set up TOTP -> Default -> paste 2FA code -> ok

right click on test again -> time based on time password -> show TOTP

Time Fix[edit]

2FA TTOP code changes every 30 seconds. So clock needs to be reasonable correct.

Troubleshoting only. If code does not match.

Set timezone to UTC for simplicity.

sudo cp /usr/share/zoneinfo/Etc/UTC /etc/localtime

Go to https://www.timeanddate.com/worldclock/timezone/utc or any other similar source to find out the time in UTC.

Fix the click. Change the date and time accordingly!

sudo date -s "26 SEPT 2018 11:54:25"

Check if the clock is correct now.

date

Footnotes[edit]

    • In Qubes, apt-get package installation could be done in TemplateVM.
    • In Qubes, download and verification could be done in a temporary TemplateBased AppVM, ideally DispVM. Then move to offline vault VM.
    • In Non-Qubes-Whonix: install first, then disconnect internet and never re-enable internet access. TODO document
  1. Because accurate time required for TTOP and due to Boot Clock Randomization and sdwdate anonymizing time.
  2. https://keepassxc.org/verifying-signatures
  3. https://addons.mozilla.org/de/firefox/addon/passifox/

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