Linux Questions

1149 readers

3 users here now

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

Tips for giving and receiving help

Any rule violations will result in disciplinary actions

founded 1 year ago

MODERATORS

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

11 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

you are viewing a single comment's thread
view the rest of the comments

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

What is the output if you run sudo cryptsetup --verbose open --test-passphrase /dev/nvme0n1p3?

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

It asks for the sudo password, then it prints

No usable token is available.

Then it asks : Enter passphrase for /dev/nvme0n1p3:

After entering my old passphrase it prints:

Key slot 0 unlocked
Command Successful.

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

Alright so no permission issue, what if you run the changekey command in a separate bash subprocess? sudo bash -c '($your-changekey-command-here)'

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

Is it like the same first "cryptsetup luksChangekey..." But inside parentheses ? Im sure I'm getting the syntax wrong.. It prints

bash: line 1: -luksChangekey: command not found