On Tuesday, Google made client-side encryption available to a limited set of Gmail and Calendar users in a move designed to give them more control over who sees sensitive communications and schedules. CSE gives these customers more control over the data Google stores while at the same time making it easy for authorized users to decrypt for sharing and collaboration. “As customers retain control over the encryption keys and the identity management service to access those keys, sensitive data is indecipherable to Google and other external entities