![]() But note that despite what I may have just said about filling in the gaps, this still won’t be 100% comprehensive. So here we go – let’s explore how the thing works. So don’t despair when you see a screen full of binary data – just skim through those and come back to them whenever you’re trying to debug your own tools. I don’t really expect those to be terribly clear as text, but they should help you if you’re trying to build your own system. I devote a whole lot of bits to showing detailed cryptographic computations – hex dumps of keys, ciphertexts, HMAC tags, and so forth, with lots of intermediate results. The goal of this series is to help explain how 1Password works, with enough detail that the reader (if they’re so inclined) can actually build their own client to verify that it’s working as we expect. So hopefully any biases won’t matter much anyway. ![]() This isn’t meant to be an unbiased product review – this is a tech-geek exploration of fun crypto-things. I’ve toyed with some other tools here and there, but never seriously investigated any of them because I’ve always been happy with how 1Password works. So take any “this is the best thing ever!” comments that creep into this with a grain of salt. ![]() This is my small effort to further the implied “…but verify” step of trusting these tools.įull disclosure: I’ve been a very happy 1Password user for years – since at least 2009. Ultimately, many of the things we use on a daily basis are just “Black Boxes” that we’re asked to trust. What risks does something present to an organization (or family?) Under what circumstances can the service be breached? How do we prevent that, or at least mitigate it? And understanding how things work is vital to understanding whether to trust them. I personally don’t feel I’ve understood how something works until I’ve written my own tool to demonstrate it. ![]() But mostly, because I think it’s important to verify. Why do I need to do this, if AgileBits has done such a good job? First, because they are still missing fairly important details here and there. And so now I’m here to try and share that information. I’ve had to dig, experiment, and frequently, cajole AgileBits support and engineers, until I really understood how things work. But the documentation is by no means complete. Their “1Password for Teams” whitepaper is an essential resource for understanding the product, and ultimately, what risks it may present to an organization. There’s even an official command-line interface.įortunately, AgileBits (the creators of 1Password) are very open as to how their systems work. Private vaults (which can also be synced over things like Dropbox). ![]() We have browser extensions and mini clients. Native clients exist for macOS, Windows, iOS, and Android. The 1Password service is available in so many flavors that it’s impossible to do every aspect of the ecosystem justice. In particular, I wanted to understand what could happen if an attacker managed to collect a user’s Master Password – how hard would it then be to get all their passwords?Īs part of this quest, I’ve explored the 1Password vault structure, read their security white papers, asked for help from engineers in their support forum, and written multiple tools to Read All The Passwords. Earlier this year, I embarked on a deep dive into how 1Password works. ![]()
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