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this post was submitted on 19 Feb 2024
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Privacy
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Does this matter if it needs a password? Luks stores the key in storage too
If I understand Luks, the raw key is encrypted using the passphrase, so that is an ok scheme if the passphrase itself is too random to attack by brute force (unlike the 8 digit code that the Ironkey device uses). Look up "diceware" for a reasonable way to generate random phrases. Luks with this approach can be pretty good, though still potentially vulnerable to key loggers and other such attacks. Basically, put careful attention into what you are trying to protect against. High security commercial crypto (e.g. for banking) uses hardware modules in secure data centers, surrounded by 24/7 video surveillance. Check out the book "Security Engineering" by Ross Anderson if this sort of thing interests you. 1st and 2nd editions are on his website, use web search. Parts of the current 3rd edition are there too).