This doesn't look like it'll ever be done. Based on past experience, I don't think that Canonical takes encryption seriously.
So, I've thrown in the towel. Since buying a new computer, I haven't used dual-boot. Instead, I installed Ubuntu using its full-disk LUKS encryption. I run Windows in a VM (VirtualBox) inside Ubuntu, so that LUKS also protects it.
It's a good solution provided that your hardware is powerful enough. If your hardware isn't up to it, you don't have much choice.
This doesn't look like it'll ever be done. Based on past experience, I don't think that Canonical takes encryption seriously.
So, I've thrown in the towel. Since buying a new computer, I haven't used dual-boot. Instead, I installed Ubuntu using its full-disk LUKS encryption. I run Windows in a VM (VirtualBox) inside Ubuntu, so that LUKS also protects it.
It's a good solution provided that your hardware is powerful enough. If your hardware isn't up to it, you don't have much choice.