dm-crypt USB install for / partition

[shakthimaan]

Hi,

Your script worked fine on the ASUS C201PA netbook for a USB install. I am interested in using an encrypted / USB drive:
https://wiki.archlinux.org/index.php/Dm-crypt/Encrypting_an_entire_system#Simple_partition_layout_with_LUKS

cryptsetup is not available in Chrome OS. So, I tried creating the LUKS partition for /dev/sdb2 from my desktop and extracted the ArchLinuxARM-veyron-latest.tar.gz to /dev/sdb2. But, it creates a kernel panic, without prompting for the decrypt password. How can the boot loader be given this information on the encrypted drive?

Can this be done?