It's the end of another work week, and time for another Friday Q&A. Reader James Safechuck suggested that I write about encryption, and for today's article I've creatively interpreted the request and will give a tour of the built-in CommonCrypto library.

A mere fourteen days have passed since the last time, but here is yet another Friday Q&A. Luis de la Rosa contributed this week's topic: proper generation and use of random numbers.