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bitwarden-dl

A small Python script which creates an encrypted Bitwarden backup, including all attachments and supporting YubiKeys.

The script creates a json export of your vault, downloads all attachments and than creates an encrypted 7z archive using your Bitwarden's master password.

Why?

Bitwarden's own export function is quick and great, but it doesn't download the attachments for you.

For this reason there is a great project called portwarden which offers import and export features. But it only works with e-mail and password combination. This is a problem when you have your account secured using a YubiKey.

Therefor I wrote this script which uses an API client id and key, which is compatible with YubiKey as 2FA. This script only offers export features though for backup reasons.

Installation

  1. Clone this repo or download the files
  2. Install Python
  3. Install the Bitwarden CLI and make sure it's available in your PATH variable
  4. Install the requirements
    • pip install -r requirements.txt

Usage

  1. Go to bitwarden.com -> Account Settings -> Security -> Keys -> API Key and note your API Key and client id
  2. Run the script in the command line
    • python ./bitwarden-dl.py
  3. Enter the credentials when asked

Arguments

Alternatively, instead of entering the credentials manually, you can pass them as arguments. Please see my thoughts about this below.

  -h, --help           show this help message and exit
  --id ID              Your API client ID
  --secret SECRET      Your API client secret
  --password PASSWORD  Your Bitwarden master password

Thoughts about security

  • All your vault content will be stored in temp files unencrypted during the process. Only use this script on computers you trust and ideally use disc encryption.
  • The script stores your credentials in environment variables during its runtime. They could potentially be read out from other programs.
  • When passing the credentials as arguments, this should only be done by loading the credentials from a secrets vault, that way they won't land in your command line history. Something like the Apple Keychain, Powershell SecretManagement or a Linux alternative.

Portwarden didn't work for me since I use a Yubikey.

So I wrote a Python script which creates encrypted backups including attachments. To log in an API token is used, that way it works also with Yubikeys or any other form of 2FA.