credential_duration = datetime.timedelta(days=dur_days)
- expiration = datetime.datetime.now(du_tz.tzutc()) + credential_duration
+ expiration = datetime.datetime.utcnow() + credential_duration
expiration_str = expiration.strftime('%Y-%m-%dT%H:%M:%SZ') # FIXME: libabac can't handle .isoformat()
version = "1.1"