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Which way is more secure? #230

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sickamongthepure opened this issue Jun 18, 2017 · 3 comments

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@sickamongthepure
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commented Jun 18, 2017

I'm wondering which way of deploying FileVault is more secure:

  1. Turning on FileVault in System Preferences after installing macOS.

  2. Before installing macOS make encrypted partition in Disk Utility and then install macOS.

What do you think?

@sickamongthepure sickamongthepure changed the title Which way is the best? Which way is more secure? Jun 22, 2017
@1dotd4

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commented Jun 22, 2017

It should encrypt automatically the partition before to install. Or it isn't?

@ghost

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commented Jun 26, 2017

I think he is asking about encrypting the drive from the recovery/bootable Installer (i.e. Disk Utility -> Erase > Mac OS (Journaled, Encrypted) versus erasing it regularly and then encrypting it during system setup (or some point later).

I actually had the same question and was wondering if anyone knew the advantages/disadvantages of both.

@felixgr

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commented Jul 31, 2017

I looked at the seeding of Apple's PRNG a few years ago. Things might have changed since then. Back then, the PRNG had more entropy available in scenario 1 because of the recent reboot. So, just based on that knowledge, scenario 1 seems more secure.

@drduh drduh closed this in f2ccf95 Aug 25, 2017
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