text: DROP TABLE IF EXISTS `data`;
  CREATE TABLE data (
     `sha1_key` varchar(255),
     `value` blob,
     `created_on` datetime,
     `updated_on` datetime,
     PRIMARY KEY (sha1_key)
  );
  DROP TABLE IF EXISTS `users`;
  CREATE TABLE users (
     `username` varchar(32),
     `password` varchar(255),
     `user_key` blob,
     `shared_key` blob,
     `is_admin` BOOLEAN NOT NULL DEFAULT 0,
     `created_on` datetime,
     `updated_on` datetime,
     PRIMARY KEY (username)
  );
  