This is not very useful, it is a security policy change. The previous post mentioned homomorphic encryption. This is a method of performing computation on the c

This is not very useful, it is a security policy change. The previous post mentioned homomorphic encryption. This is a method of performing computation on the cipher text. If this were implemented, then you could potentially create VM's where even in the event of a hypervisor compromise, dumping the plaintext memory of guests is not possible. If you can take a memory dump of the host sytem, you can from that devise the encryption key for the disk encryption with the M$ solution to this issue.