This book contains the history of China-U.S. Relations (1911-1949), including China-US relations in Early Republican Period, the impact of Versailles Peace Conference and Washington Conference on China-US relations, US support for Northern Warlord Government, the Guangzhou Revolutionary Government, and the Nanjing National Government. During the War of Resistance Against Japanese Aggression, the United States went from neutral to form an alliance with China against Japan. After the end of the War, China and the United States gradually moved toward confrontation. This book also has a brief description of China-US relations from 1784 to 1911.

This book constitutes the refereed proceedings of the 6th International Conference on Provable Security, ProvSec 2012, held in Chengdu, China, in September 2012. The 16 full papers and 4 short papers presented were carefully reviewed and selected from 66 submissions. The papers are grouped in topical sections on signature schemes, foundations, leakage resilence and key escrow, encryption schemes, and information theoretical security.