Under the Defence Trade Control Act (DTCA), Australians could face up to ten years in prison for teaching encryption. Criminal charges will go into effect next year. The new legislation will make it illegal for Australians to teach or provide information on encryption without having a permit.
The act does say that only providing encryption information to anyone outside of Australia will be illegal. Any citizen of Australia who shares information on encryption with a person outside the country could face criminal charges.
You can read more in an article by Scott fargo in the Inside Bitcoins web site at http://goo.gl/LC5orU.