security heads say: if you care about security, you shouldn’t be using systemd
Yah, ignore that bullshit.
this post was submitted on 20 Aug 2024
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K, so I'm probably oversimplifying, but almost all distros should allow you to at least encrypt /home, and although I haven't tried it myself yet, whole-disk encryption via UEFI is possible. You say your threat model is only someone trying to unlock your device, but it sounds as if you're not worried about espionage - someone gaining access to your computer and replacing the /efi boot process with something that will harvest your password when you log in. If all you're worried about is seizure and data protection, why isn't disk encryption sufficient?
If you really feel like you need TPM, Arch supports it, which means other distros do, too. Although, figuring it out for, e.g., Ubuntu of something you'll have to research; the Arch wiki is the most fantastic source of Linux documentation on the web, and much (but not all) of it can help with other distros.
I may be completely misunderstanding what problem you're encountering, but (a) disk encryption is trivial to set up on both Mint and EndeavorOS installers (the two I've used most recently), and (b) TPM certainly seems possible from the Arch wiki.
Idk if FDE is enough, what if the attacker can modify the boot code to capture the decryption keys and other stored passwords ? as far as I know this is exactly what secure boot protects against, it checks the validity of the boot code using the TPM chip, if it's already there, why don't most distros use it ? instead you'll see that secure boot is greyed out in the Bios ( which means it's not supported )
and yes, I did lock down the Bios too, with a different password
Edit: I'll check EndevourOS documentation, Mint is cool but it doesn't adobt newer standards or newer kernels ( newer kernels are just much more secure )
I was going off what you said:
my threat model involves someone trying to physically unlock my device
This doesn't sound to me as if you're concerned about espionage - repeated, covert, root access to your computer, for the purpose of installing software to capture your keys, so that they can steal your computer and have complete access. If someone has remote root access to your computer, you're fucked, TPM or not; they'll just read what they want whenever you're logged in and using your computer.
TPM is for when you might not have secured physical access to your computer. Like, you're worried the NSA is going to sneak into your house while you're out shopping, pull your HD, replace the boot loader, and re-install it before you get home.
If you're only worried about, say, losing a laptop, or a search & seizure at your house, an encrypted HD is good enough. TPM and a keylocked BIOS are belts-and-suspenders, but if they want to get at the data they'll just pull the HD and run code-breaking software on it on and entirely different super-computer. TPM won't help you at all in that case.
Honestly, TPM is for a specific threat mode, which is much more like ongoing espionage, than simple opportunity theft. Your stated use case sounds more like the latter than the former.
but if they want to get at the data they'll just pull the HD and run code-breaking software on it on and entirely different super-computer. TPM won't help you at all in that case.
You make it sound so easy and doable, but the reality is that without meeting certain conditions such as the existence of the original TPM chip, a brute force attack will render the data irretrievable.. And even if I'm wrong in the last part, that would still be a pain in the butt for the attacker... and it'll buy me time... like you said ... belts-and-suspenders
This doesn't sound to me as if you're concerned about espionage
Because i don't have second chances, which is why I wish there's way to erase everything by entering a key combination.. somehow.. Idk.. like Android has that..
Because i don't have second chances, which is why I wish there's way to erase everything by entering a key combination.. somehow.. Idk.. like Android has that..
That triggered a memory for me. Apparently certain SSD(Samsung I heard of, not sure about others) always encrypt your data in hardware with a random key, this is done transparently to the OS and is otherwise unremarkable.
What it archives though and afaik is intended for is the possibility of easily and quickly "erasing" the disk by just overwriting that encryption key a couple times, I don’t remember if that used a special tool or something but if that is useful to you it probably wouldn’t be hard to find more info on this.
Samsung is a reasonably trustworthy company, not from US/UK, not Chinese, so if they say they have a clean implementation of this I’d trust them. Would be kinda a national security issue for them if it wasn’t seeing how Samsung is everywhere in gov an private sector in Korea.
What it archives though and afaik is intended for is the possibility of easily and quickly "erasing" the disk by just overwriting that encryption key a couple times, I don’t remember if that used a special tool or something but if that is useful to you it probably wouldn’t be hard to find more info on this.
first of, apologies for the late reply.. this reminds me of when I ( not so long ago ), used to overwrite random data into HDDs using Eraser, before selling my laptops or switching a company laptop, I hear SSDs are designed to last longer, so that practice ( of writing random data so it'll erase the sensitive data ), is "kind of" a time waste now.. but I guess it'll make it hard to retrieve that data, unless the attacker has some specialized software and hardware
Samsung is a reasonably trustworthy company, not from US/UK, not Chinese, so if they say they have a clean implementation of this I’d trust them
I wouldn't trust any company based only on their claims, they need to document ( explain how it works ), develop things in the open ( publish the firmware ), the schematics, even the CAD drawings.. like what the folks at System76 and Framework are doing..
That said, it sure sounds cool to have that level of protection, if only Samsung wasn't a shitty company already ( in my book )
Would be kinda a national security issue for them if it wasn’t seeing how Samsung is everywhere in gov an private sector in Korea.
I'm speculating here, but it wouldn't be far fetched if they designed a secure encrypted clean hardware for the government with military grade encryption as they like to call it, while the end users receives only enough encryption power to protect against normie threat actors like a spouse...etc companies have these policies where they provide a premium/quality products for businesses and governments but cheap or in many cases poorly made products to end users .. like Windows Home
I'm speculating here, but it wouldn't be far fetched if they designed a secure encrypted clean hardware for the government with military grade encryption as they like to call it, while the end users receives only enough encryption power to protect against normie threat actors like a spouse...etc companies have these policies where they provide a premium/quality products for businesses and governments but cheap or in many cases poorly made products to end users .. like Windows Home
I can see why you think that, but that is US centric thinking. South Korea probably cares a whole lot more about corporate security vs government security compared to the US. I don’t mean to say they don’t care about government secrets, but it’s different. No nukes, no Cold War against a superpower, instead a couple huge conglomerates basically keeping the entire GDP afloat.
Samsung in Korea isn’t like the Samsung we know, they built everything from cars, tanks, ships, insurances, constructions(they built the burj khalifa), pharmaceuticals etc.
There are probably a handful of conglomerates like that in South Korea and they basically built a state around them to manage their employees needs.
fair point, but like Edward Snowden once said: "perhaps the fundamental rule of technological progress: if something can be done, it probably will be done, and possibly already has been." he was talking about surveillance tech and programs.