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Apple: SSH and FileVault

(keith.github.io)
507 points ingve | 2 comments | 18 Sep 25 20:15 UTC | HN request time: 0.408s | source
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pfexec ◴[18 Sep 25 21:37 UTC] No.45295315[source]▶
Friendly reminder that you've been able to automatically unlock fully-encrypted Linux systems via TPM for years since it was added to systemd...

(Here's a nickel kid...)

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xrisk ◴[18 Sep 25 21:56 UTC] No.45295507[source]▶
This is not the same thing is it? Arch Wiki mentions something about having to install a separate ssh server into initramfs to support ssh’ing into fully encrypted systems.

systemd-cryptenroll seems to be about storing encryption keys into the TPM so that they can be decrypted automatically at boot (?)

Apologies if I misunderstood something.

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conradev ◴[18 Sep 25 23:51 UTC] No.45296423[source]▶
and I imagine that the initramfs is not encrypted and trivially modifiable?

Apple is able to achieve this securely because their devices are not fully encrypted. They can authenticate/sign the unencrypted system partition.

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1. klooney ◴[19 Sep 25 00:51 UTC] No.45296761[source]▶
https://mastodon.social/@pid_eins/113404099228886304

You auth the initrd too

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2. conradev ◴[19 Sep 25 01:53 UTC] No.45297153[source]▶
This is super cool, thanks for the link! I’m glad they were able to leverage the TPM