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this post was submitted on 28 Sep 2023
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I read from your answers on other comments, that you do want to have even protection if someone forces you to give up your password and at the same time have the convenience of a quick boot process and avoid full disk encryption? (Not provoking, just want to make sure I get you right). Please consider, that if you don't make your thread-model clear it will be really hard to give a proper advice.
Please be aware that it's often a trade between usability and comfort on the one hand and proper security on the other hand. I'm not really sure if you want to target both at the same priority, that might not work out. You will not achieve Maximum convenience and maximum security at the same time.
If you want to actually commit to high security, there's a thing with LUKS or VeraCrypt supporting plausible deniability. Main concept is, you have one key that decrypts sort of a mock up file system with uncritical data (or misleading, slightly compromising stuff, however you want to play it). Then you have a way longer key, that unlocks the actual data. This can cover your ass for the thread model of some actor forcing you to give up you password. Have a look at the VeraCrypt documentation on plausible deniability.
Another great read for me was hitchhikers guide to online anonymity. Might be off topic, but there are some great advices and guides to increase your anonymity and considerations about online security too. If you want to go fully paranoid on a Snowden level, that might be you way to go. Took it as a inspiration to get myself a QubesOS setup and got a lot of insights with that one.
I really don't want to discourage you, it's the opposite! I appreciate everyone thinking about how to secure their stuff properly, but be aware that you might need to dig yourself deep into it, if you want to achieve the goals you mentioned.
Wow! Thank you for the thorough answer!
You misunderstood one thing, though: I don't consider someone forcing me to give up my password to be a valid attack vector. My devices can be stolen and all hardware keys with them. But I woun't get blackmailed to give anything up. Maybe plausible deniability is a good backup, though.
I'd like to go into further detail, but I feel like I already said too much for a non-throwaway account.
I do realize that convenience and security are a two ends of a see-saw. Thank you for the Vera.crypt hint. Even though I don't know if I would use it, it sure sounds interesting.