TL;DR:
cryptsetup --hash sha512 --key-size 512 -v luksFormat ./test.img
cannot be opened again on the new Raspberry Pi 2. Shorter key-size, and other platforms work.
This is a bit a puzzler to me …
This is what I do:
# Create 8M image
dd if=/dev/zero of=./test.img count=8 bs=1M
# Set up encryption -- enter a suitable password when asked
cryptsetup --hash sha512 --key-size 512 -v luksFormat ./test.img
# Now attempt to open it, entering the same password
cryptsetup open test.img test
and indeed it works for me on x86_64, the Raspberry PI 1, and the BeagleBone Black. However, it fails on the Raspberry Pi 2 with:
"No key available with this passphrase."
If I create the encrypted image on the Raspberry Pi 2, I can open it on other platforms. However, I cannot open any image with these parameters on the Raspberry Pi 2, regardless where it was created.
If I set the key-size to 256 bit, it works on all platforms.
The Raspberry Pi 2 is an ARM v7 processor, unlike the Raspberry Pi 1. But then, the BeagleBone Black is Arm V7, too.
Puzzled ...
Johannes.
_______________________________________________
dm-crypt mailing list
dm-crypt@xxxxxxxx
http://www.saout.de/mailman/listinfo/dm-crypt
