Final answer:
The passage discusses the topic of encryption and its importance in the Information Age, providing factual examples and an informative style.
Step-by-step explanation:
The passage focuses on the topic of encryption and its importance in the Information Age. It mentions the history of cryptography, stating that it has been of importance to governments and the military for two thousand years, but now also has a role in facilitating business and protecting privacy for ordinary people.
The passage employs an informative style, providing factual examples such as encryption being seen as providing the locks and keys of the Information Age. However, it does not discuss exact dates and places.