I previously had been using TrueCrypt, but recently re-installed Ubuntu and used 12.10’s full disk encryption option (re-installed for other reasons). I never got any choice in how it did that. I don’t know what cipher is used or the key size, or anything besides the passphrase really. Where can I find details about this sda5_crypt?
Edit: Seeing this mistake is humorous, but for those curious, sda5 refers to the hard drive and partition, not the encryption system.
Here is Solutions:
We have many solutions to this problem, But we recommend you to use the first solution because it is tested & true solution that will 100% work for you.
Full disk encryption is using the
dm-crypt kernel module, managed by Luks/cryptsetup. If you choose to encrypt your home directory, eCryptfs is used instead. These are two different technologies. I assume you chose full disk encryption here in my answer.
Use the command
# cryptsetup luksDump /dev/sda5
to view the current detailed configuration for
sda5. And another example:
# cryptsetup status sda5_crypt /dev/mapper/sda5_crypt is active and is in use. type: LUKS1 cipher: aes-cbc-essiv:sha256 [...]
Note: Use and implement solution 1 because this method fully tested our system.
Thank you 🙂