missing built-in disk encryption at install time

[Roy Ash]

Is there a simple way to install Ubuntu on SD card for Raspberry Pi4 with full disk encryption?

[Ubuntu Foundations Team Bug Bot (crichton)]

Thank you for taking the time to report this bug and helping to make Ubuntu better. It seems that your bug report is not filed about a specific source package though, rather it is just filed against Ubuntu in general. It is important that bug reports be filed about source packages so that people interested in the package can find the bugs about it. You can find some hints about determining what package your bug might be about at https://wiki.ubuntu.com/Bugs/FindRightPackage. You might also ask for help in the #ubuntu-bugs irc channel on Freenode.

To change the source package that this bug is filed about visit https://bugs.launchpad.net/ubuntu/+bug/1959113/+editstatus and add the package name in the text box next to the word Package.

[This is an automated message. I apologize if it reached you inappropriately; please just reply to this message indicating so.]

[Roy Ash (silverfire)]

Dear bot, I didn't fill a source package because I don't know what is the appropriate package (if any) :-)

[Roy Ash (silverfire)]

As Raspberry Pi 5 is announced with built in hardware encryption, it make more sense to implement this feature

[Juerg Haefliger (juergh)]

There is currently no easy nor supported way to do that.

[Roy Ash (silverfire)]

Why?
where is the blocker?

[Dave Jones (waveform)]

rpi-imager currently has no facility to encrypt the image it flashes to the storage on the Pi (and making such a facility generic enough that it would fit all potentially interested distros is a daunting task to say the least), so this isn't valid for rpi-imager.

I *did* add some initial steps towards this in the lunar desktop images, which preserve space at the end of the root partition for LUKS headers (by ensuring the root file-system doesn't expand *all* the way to the partition size) which should make this easier to achieve in future, but there's still plenty of work to be done here.