I like the idea of a file on each device to decrypt the password blog. If you are using it, is the file an option or a necessary part of 1password?
1Password and the unlock file. Is anyone using this?
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It's not a file. It's a key stored locally.
We discussed who reads the docs... perhaps maybe you actually should, seems pretty well written:
blog.1password.com
We discussed who reads the docs... perhaps maybe you actually should, seems pretty well written:
Secret Key: What is it, and how does it protect you? | 1Password
The Secret Key is a unique feature that protects you if 1Password’s servers were to be breached. Read here to learn more about the benefits of the secret key.
What you're inclined to call a file, they are not. (As they wrote the software, I'm going to go with them on this.) They're intentionally vague about how they store it or where.
blog.1password.com
the Secret Key is stored securely on your devices, it’s not something you need to enter every time you unlock 1Password.
From: https://1passwordstatic.com/files/security/1password-white-paper.pdf
Locally exposed Secret Keys
Once a client is enrolled, it will store a copy of the Secret Key on the local device. Because the Secret Key must be used to derive the user’s AUK it cannot be encrypted by the same AUK or by any key that is directly or indirectly encrypted with the AUK. Depending on client and client platform the Secret Key may[3] be stored on the device using some of the protections offered by the operating system and may be lightly obfuscated. However, it should be assumed that an attacker who gains read access to the user’s disk will acquire the Secret Key.
[3] We are deliberately vague about this, as practice may change rapidly from version to version, including different behaviors on different operating system versions.
Questions about using 1Password for the first time | 1Password
Getting started with 1Password is the best decision you can make for your online security.
the Secret Key is stored securely on your devices, it’s not something you need to enter every time you unlock 1Password.
From: https://1passwordstatic.com/files/security/1password-white-paper.pdf
Locally exposed Secret Keys
Once a client is enrolled, it will store a copy of the Secret Key on the local device. Because the Secret Key must be used to derive the user’s AUK it cannot be encrypted by the same AUK or by any key that is directly or indirectly encrypted with the AUK. Depending on client and client platform the Secret Key may[3] be stored on the device using some of the protections offered by the operating system and may be lightly obfuscated. However, it should be assumed that an attacker who gains read access to the user’s disk will acquire the Secret Key.
[3] We are deliberately vague about this, as practice may change rapidly from version to version, including different behaviors on different operating system versions.
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