The limit is probably de/encryption speeds. cryptsetup benchmark shows just 3.5 GB/s for my 7640U with aes-xts 256 bit keys. At least for sequential stuff.
I think that is a bit slow since my lowly stone age Skylake Celeron gets 2.3GB/s in that test. Maybe there are some improvements left via future updates.
If you want to use software or hardware encryption depends on your attacker model and your level of trust in the systems TPM implementation. I’ll stay with using LUKS-based software encryption since all my systems are set up that way.
@Kelly_Wu I agree with you, but using hardware encryption seems like such an easy way to gain this perf back. We are buying high end drives for this purpose no?
@halemmerich thanks for the details! It seems that you are talking about software encryption, wouldn’t this be an extra argument towards hardware encryption? Having the drive controller handle it would leave the CPU out of it.
I only want to protect my data in the case of a lost or stolen laptop, I am not interesting enough for the NSA
Yes, the numbers are for software encryption. Any hardware encryption worth its salt should be fast enough to only incur a negligible performance penalty.
Your usecase seems like a prime example for SSD integrated hardware encryption. I like to be able to swap my hardware around and I do not know if that would be possible with a Bitlocker/TPM combination. I configure my systems automatically, so I will keep it all the same, even if it costs a bit of performance. This notebook is the first one where that actually makes a difference, all other SSDs I have are too slow anyway
I just cloned my drive to a new Samsung 990 2tb drive. I am using software encryption. I don’t really want to go through the mess of a reinstall. It might be worth it based on these numbers though. Then again windows 12 might be out in 2024 and that would be a better opportunity for a Clean install anyway.
I tested this with my new AMD and a Samsung 990. Unfortunately, the same result as with my 12 Intel Framework.
The enrolment of hardware Bitlocker works. The test reboot is OK and then the status says “Hardware encrypted”. However, after a further reboot, UEFI no longer finds the boot entry and the disk is inaccessible.
Only a revert with Samsung Magican can make the SSD usable again. I tested this with the current Windows 11.
BTW 11 Core Framework works well with Hardware Bitlocker. However, only until I installed the latest BIOS version. From then on, the error was as described above.
By the way, the performance and battery advantage were enormous.
Always go with software encryption for several reasons. 1) TPM modules do go bad. 2) Self Encrypting Devices always use proprietary crypto, and this crypto gets broken seemingly every year. New device, new crypto, broken by the next year. 3) Software encryption generally uses open/auditable cryptography, i.e. as secure as it can be. 4) Even non state actors are much more savvy than anyone is giving them credit for. Yes they could crack your SED because the how too’s are very public. 5) Real performance benefits are neglibile and so are the battery savings.
However you might be right and the BIOS might be the problem… When I contacted the support to remove the WD SN850X from my order, I did ask about BIOS support of Bitlocker Hardware Encryption eDrive EIII1667 and here is the answer I got from Framework:
Currently we are not able to provide further details on the Microsoft Bitlocker Hardware Encryption. We’ll be sharing more details soon, certainly be posting updates on the Framework Blog here, as well as providing updates on our Community, Social Media and Mailing list .
I sure hope we get some news before I receive my batch 7!
@nadb Sure there were some scandals in 2018 that gave hardware encryption a bad reputation, but this seems quite blown our of proportion, no? Has the crypto of the Samsung 990 Pro been broken already? What about the 980 pro that is 3 years old now? I feel fine relying on a proprietary solution from a company like Samsung, who is making products targeted to professionals and has so much to lose.
And regarding the performance benefits, look at the link from this post, they are real and mesured at 11% to 45%!
No. Not blown out of proportion. Closed source cryptography is a huge red flag. It has no assurance of meeting even the most basic standards.
Maybe, if not it is just a matter of time.
Just like they have much to lose on release day…except I can’t think of a single Samsung drive in the last 7 years or so that did not have firmware bugs that could, and in many instance did result in data loss. I am certain the same level of care has been heaped upon their cryptography.
More of a Bitlocker problem, i.e. a proprietary cryptography suite that is clearly not very well optimized. If I had the choice between the two, and those were the only options yeah I would think hardware encryption was great, but they are not my only choices…hence my comments. I truly don’t recommend hardware encryption under any conditions, the juice is simply not worth the potential squeeze.
If you DO want to use hardware encryption, BestBuy in the US is doing the pre black friday deal for members. They have the Samsung 990 Pro 2TB for $99.99 and the 4tb for $249.99. I am going to order one so I have the option to go either way.
My desktop (Ryzen 7 5800x, X570 motherboard - new when the board came out so however long that is), which has an Opal-spec NVMe as the primary boot device and has had since I put it together, on Tuesday of this week decided that the drive partition should be locked and will not unlock it. No prompt for device password, nothing in the BIOS has any effect, and a linux PBA with sedutil-cli can read the drive status but can’t unlock the volume. It’s been encrypted since I put it together and it just decided to… not work. At some point I’ll remove the drive and see if I put into something else if I can at least unlock the drive so I can format it, but I expect I’ll just have to toss it.
Maybe it’s something to keep in mind if you’re going to rely on an Opal drive for your boot device.
This was my experience as well. I thought I was going nuts until I found this thread. Thanks for posting. IMO this should be a priority bug, as it effectively bricks the SSD on the second reboot unless you know how to work with SEDs, and even then you’re just recovering the drive, not the data. There’s no bitlocker recovery scenario, it just looks to the BIOS like the SSD is gone.
I know that and you know that. A lot of people just following guides online about enabling Bitlocker don’t. It disappears from view in the UEFI and unless you start poking it with SED-specific tools, it looks like the drive is dead. Granted, it’s the second reboot after encrypting, so chances are you don’t have any irreplaceable data on there. But it does get pretty frustrating when you’ve spent that time getting the OS installed and patched, and software and accounts configured, only to lose it immediately.
Thanks! I didn’t see that in my search yesterday, I’ll check that thread out.