To pair the key with this entry, you should attach it from the “Advanced” pane. With the SSH now enabled, a new “SSH Agent” tab appears in the entry edit view. After this, it will start communicating with the SSH agent using the socket defined at $SSH_AUTH_SOCK. To enable SSH agent support, visit the “SSH Agent” settings pane, and tick the box. When the database is opened, keys are added to the agent and accessible to other SSH-enabled applications like git and rsync. KeePassXC now also has support for manipulating the SSH Agent, making it possible to store SSH keys inside KeePassXC. Once your browser is completely setup and migrated, you should uninstall the extension, disable KeePassHTTP, and remove the “KeePassHTTP Settings” entry, as it’s not necessary any more. Although requests had to be signed, it still isn’t very good for security.Īs this change is such a large one, there’s an Official migration guide, which walks through how to do it correctly. The downside is that it involved starting a web server on an internal port, meaning any process on your computer could connect to the web server and thus communicate with KeePassXC, this includes browser sessions. This had the benefit of being very easy to implement a client for, as it’s just standard web traffic. In this case, it means the browser can communicate with KeePassXC in a way that means other applications can’t.īefore, the browser communicated with KeePassXC over HTTP, using the KeePassHTTP protocol. Native messaging is a way of two processes communicating in a secure-ish manor. Once the key is installed, I backed up the old key offline (just in case), and deleted it. As this re-encrypts the database with a new master key, you can enter a new password here to change it. Select the new key, and enter your current password, and apply. To use the new key, you need to change the key file in the master key settings (Database > Change master key). I don’t exactly know what the command is doing, but it looks more complex, so that must mean it’s more cryptographically secure, right? # Install the new key The above uses a mixture of OpenSSL, and the system’s random number generator. This generates a 2048-bit key file using the system’s random number generator which is perfectly secure enough to generate random numbers, but, I like to use something even more secure: head -c 65535 /dev/zero | openssl enc -aes-256-ctr -pass pass:"$(dd if=/dev/urandom bs=128 count=1 2>/dev/null | base64)" -nosalt > keyfile.key The method suggested in the implementation PR is: dd if=/dev/urandom of=keyfile.key bs=2048 count=1 Whilst KeePassXC can generate them itself, they’re not long enough for my liking (They’re perfectly secure, I just like to be overkill!). The first step to change your key, is to generate a new key. This means rather than using a 45-bit key in an XML file, you can use any file of any size. The new key file format enables using any file as a key file for your database, rather than the XML format. Where before I used 20,000 rounds of PBKDF2, I now use just five rounds of Argon2, to ensure it opens in reasonable time on my phone. Using the 1-second benchmark button suggests using just 23 rounds. Argon2 is far more computationally intensive compared to PBKDF2. If you’re planning to use your database on less-powerful hardware, such as a phone, you’ll want to set the transformation rounds low. The settings I’m using for my database # Mobile These can both be done in the Encryption settings for your database (Database > Database Settings). To migrate to KDBX4, you must change the Encryption Algorithm to “ChaCha20”, and the Key Derivation Function to “Argon2”. Full technical information, and the exact changes can be found on the KeePass website, however it’s not necessary to actually know how it works. There are many format improvements, including support for Argon2, custom data in groups and file attachments to entries. KDBX4 is the latest version of the KeePass database format. There’s little canonical documentation on how to upgrade to use these features, so I’ve written my own! # KDBX4 These new features require some changes to the system, your database file, and browser. Native messaging for browser integration (to replace KeePassHTTP).Support for binary key files, over the legacy XML format.Cross platform (not KeePassXC specific)Ģ.3 is the first major release since the split from KeePassX, and it brings with it a lot of new features:.It’s got all the features I need, like TOTP and Browser Integration.It’s open source, and easy to contribute to, as I have.It’s actively maintained, unfortunately unlike KeePassX.I’ve bounced around many password managers, but KeePassXC looked to fill all the boxes: I’ve been using KeePassXC since not long after it’s initial split from KeePassX in late 2016.
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