I installed Ubuntu 12.04 a few days ago but strangely I seem to have skipped the part about choosing to encrypt home folder. Now if it is encrypted I do not know what is the encryption key. How do I check if it is really encrypted? (and also the swap partition).

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    related question -> askubuntu.com/questions/17216/… – hhlp Jun 4 '12 at 20:56
  • You probably could have recovered the passphrase using ecryptfs-unwrap-passphrase or ecryptfs-unwrap-passphrase /path/to/wrapped-passphrase (if the automatically created "wrapped-passphrase" file had not been deleted), see manpages.ubuntu.com/manpages/natty/man1/…. NB: When ecryptfs-unwrap-passphrase asks for your passphrase, enter the user's password. – lmeurs Aug 24 '15 at 12:08

Open terminal and type ls -A /home. There should be a .ecryptfs folder, if you have encryption of your home folder.

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    Thanks. That's exactly what I needed. I do have .ecryptfs folder. So my home folder is encrypted. – Neptunno Jun 4 '12 at 21:08
  • Also there is a related question regarding swap partition, askubuntu.com/questions/53242/check-if-partition-is-encrypted My swap is encrypted as well. – Neptunno Jun 4 '12 at 21:09
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    ...so Eve's mkdir ~/.ecryptfs (or tar xf files-expected-on-an-encrypted-home.tgz) would make Alice believe her home is safely encrypted, while it actually isn't? – LSerni Apr 20 '15 at 13:29
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    @Iserni: Indeed! I think one should rather look through mount then. I haven't thought about that before. – Martin Ueding May 9 '16 at 15:53
  • You do not want to list contents of the current directory, so please exclude the ` .` from the command. – jarno May 8 '19 at 12:37

This is how to check if swap partition is encrypted:

sudo blkid | grep swap

and should check for an output similar to

/dev/mapper/cryptswap1: UUID="95f3d64d-6c46-411f-92f7-867e92991fd0" TYPE="swap"

If instead of cryptswap1 there is something like a usual drive (e.g. /dev/sda4) then swap area is not encrypted.

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    What if I see both /dev/mapper/cryptswap1 and a usual drive in the output? – Magnus Teekivi Nov 30 '17 at 8:14

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