So far we've already received 3 submissions. The shortest implementation is just 10-byte. Can you beat it ;)? Don't worry if you can't we'd love to see your code anyway.
In other news, tomorrow Bruce and I are going to have a Q&A session with computer science and computer security students at University of Science. We're going to share what we do in our day jobs, and answer any questions the audience might have w.r.t technology, working in the U.S., etc. The exact date and location is
Time: 13:00, December 29 2015 (tomorrow)
Location: Room I-23, 227 Nguyễn Văn Cừ, District 5.
The organizers told me that everybody is welcome. Hope to see you all!