Integrity protect the TPM state when it is written in entrypted form.
libtpms state (for TPM1.2) is also integrity protecting the blobs, but
we better determine the integrity of the decrypted data on the layer
above it.
Add new ioctls to get and set the 3 different types of state blobs
from and to the CUSE TPM. Add test cases for testing the new ioctl's
on a CUSE TPM that stores the state encrypted and on a CUSE TPM that
stores it non-encrypted.
Signed-off-by: Stefan Berger <stefanb@linux.vnet.ibm.com>
