Linux Questions

1060 readers

1 users here now

Linux questions Rules (in addition of the Lemmy.zip rules)

stay on topic
be nice (no name calling)
do not post long blocks of text such as logs
do not delete your posts
only post questions (no information posts)

Tips for giving and receiving help

be as clear and specific
say thank you if a solution works
verify your solutions before posting them as facts.

Any rule violations will result in disciplinary actions

founded 1 year ago

MODERATORS

[email protected]

[ Solved ] I can't change Disk Encryption password (infosec.pub)

submitted 5 months ago* (last edited 5 months ago) by [email protected] to c/[email protected]

6 comments fedilink hide all child comments

I tried the following

sudo cryptsetup luksChangekey /dev/nvme0n1p3 < new passphrase >

It then asks for the Sudo password, then asks for the old passphrase, but then it prints this error message

Failed to open key file.

what went wrong ?

Edit: turns out using GNOME Disks is way more straightforward.. 😅, thank you all

top 6 comments

sorted by: hot top controversial new old

[–] [email protected] 5 points 5 months ago

Refer to the cryptsetup-luksChangeKey man page --key-file options, you cannot change the password directly on a commandline; you either (a) type it interactively, (b) put it in a keyfile, or (c) accept input from STDIN with the standard use of - on the end (e.g. echo "mypass" | cryptsetup luksChangeKey /dev/sda - )

[–] [email protected] 2 points 5 months ago (1 children)

Have you tried using GNOME Disk Utility?

[–] [email protected] 1 points 5 months ago (2 children)

I have it installed, but I don't see the option 🤷‍♂️

[–] [email protected] 2 points 5 months ago

Try clicking on the encrypted partition to get the passphrase option.

https://askubuntu.com/questions/95137/how-to-change-luks-passphrase

[–] [email protected] 1 points 5 months ago (1 children)

Here's how to find it: https://spectra.video/w/tbLNakrf2ncii4NrqJbwE8

[–] [email protected] 2 points 5 months ago

OMG, thank youu.. It worked.. 🥳