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189 points arjvik | 2 comments | 17 Jan 25 03:00 UTC | HN request time: 0.001s | source

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kopirgan ◴[17 Jan 25 09:45 UTC] No.42735799[source]▶

Any idea how this works in the Windows world with bitlocker? I hope it's not same vulnerability

I recently changed motherboard on my laptop, had the bitlocker key if not I was told I'll have to reinstall Windows all over again.

Even with the key, one must decrypt and re-encrypt.

replies(1): >>42736205 #

1. dist-epoch ◴[17 Jan 25 10:51 UTC] No.42736205[source]▶

>>42735799 #

> Even with the key, one must decrypt and re-encrypt.

That's not true, the unlock key will be regenerated, but the disk contents will not be re-encrypted, because it's encrypted with another immutable key.

replies(1): >>42736241 #

2. kopirgan ◴[17 Jan 25 10:56 UTC] No.42736241[source]▶

>>42736205 (TP) #

Thanks may be I didn't know the exact steps. It kept prompting key at every startup until I disabled and re-enabled bitlocker.

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Bypassing disk encryption on systems with automatic TPM2 unlock