trasleta this to spanish: Verification
After downloading a Patch, clients must first verify its correctness by
recomputing the PatchMAC and comparing it with the value included with the
Patch. After that, clients verify that SnapshotMAC is correct as well by repeating
the steps outlined above.
The Base Roller process on the server must preserve SnapshotMAC (and the
KeyID used to generate it) of the latest Patch that was used to construct the
Base Rolled Snapshot. This value is used by a client that received a Snapshot to
independently verify its integrity by applying LtHash16 over all of its records and
further compute the MAC as described above