return uri.SSKVerifierURI(storage_index=os.urandom(16),
fingerprint=os.urandom(32))
-class FakeDirectoryNode(dirnode.NewDirectoryNode):
+class FakeDirectoryNode(dirnode.DirectoryNode):
"""This offers IDirectoryNode, but uses a FakeMutableFileNode for the
backing store, so it doesn't go to the grid. The child data is still
encrypted and serialized, so this isn't useful for tests that want to