tree da3190f208ef505a74c5746cdaed728dd99d2945
parent 59ad018d0b8c78427b30101099fb1f37a21c0770
author Greg Kaiser <gkaiser@google.com> 1518815638 -0800
committer Greg Kaiser <gkaiser@google.com> 1518823436 -0800

cryptfs: Require ext disk crypt to match code

Our external partitions have no crypto header/footer, so we
only get the keysize and key.  Our code has been implicitly
assuming that this keysize off of disk matches the crypto
type we have in our code (and thus matches the keysize our
code is using as well).  We now make this assumption
explicit, and check for this and no longer allow external
code to pass a keysize in to cryptfs.

Bug: 73079191
Test: Compiled and tested in combination with other CLs.
Change-Id: I1a1996187e1aaad6f103982652b1bcdfd5be33ce