Use Caution When Traveling With Encryption Software
"If you bring a laptop or smartphone outside of the United States, you need a basic understanding of how international export control laws may apply to your device’s encryption software.
"Encryption software that is resident on a laptop or a smartphone is subject to export control regulations by the Commerce Department’s Bureau of Industry and Security, which enforces the export administration regulations. This is a separate issue from any technical data that may be resident on a device, which is governed by International Traffic in Arms Regulations."
Read more about what you need to know about traveling with encryption software on your device from Jeffrey Richardson's article in National Defense Magazine.