'Stores a NACL verification key for the given server.
Args:
server_name (str): The name of the server.
key_id (str): The version of the key for the server.
from_server (str): Where the verification key was looked up
ts_now_ms (int): The time now in milliseconds
verification_key (VerifyKey): The NACL verify key.'

@defer.inlineCallbacks
def store_server_verify_key(self, server_name, from_server, time_now_ms, verify_key):

    (yield self._simple_upsert(table='server_signature_keys', keyvalues={'server_name': server_name, 'key_id': ('%s:%s' % (verify_key.alg, verify_key.version))}, values={'from_server': from_server, 'ts_added_ms': time_now_ms, 'verify_key': buffer(verify_key.encode())}, desc='store_server_verify_key'))
