The encryption of information is as old as information itself. Ever since two people wanted to pass something along, so has there been a third party who wanted to be privy to it. This back and forth battle of creating codes, breaking them, and finding new ones has been happening quietly for thousands of years. Now, in an age when information flows freely and instantaneously, the field of cryptography is more important than ever.
More from this series: Keeping Secrets

Image courtesy of Garrett Coakley; Recorded June 2011; Posted September 2011