China Post-Doctor Science Fund (20060390414);the National Natural Science Foundation of China (90604022);the Natural Science Foundation of Beijing (4062025);the National Basic Research Program of China (2007CB311203);the 111 Project (B08004)
Current identity-based (ID) cryptosystem lacks the mechanisms of two-party authentication and user's private key distribution. Some ID-based signcryption schemes and ID-based authenticated key agreement protocols h...