3S. Kent.Privacy Enhancement for Internet Electronic Mail. Part:Certificate Based Key Management[].RFC.1993
4J.Linn.Privacy Enhancement for Internet Electronic Mail PartⅠ:Message Encryption and Authentication Procedures[].RFC.1993
5D. Balenson.Privacy Enhancement for Internet Electronic Mail . PartⅢ:Algorithms,Modes,and Identifiers[].RFC RFC.1993
二级参考文献4
1Estrin D, Govindan R, Heidemann J, et al. Next century challenges: Scalable coordination in sensor networks [C]. Proceedings of MOBICOM'99, Seattle, Washington, 1999.
2He T, Huang C, Blum B M, et al. Range-free localization schemes in large scale sensor networks[C]. CS-TR 2003-06, MobiCom, 2003.
3Bulusu N, Heidemann J, Estrin D. GPS-less low cost outdoorlocalization for very small devices[J]. IEEE Personal Communications Magazine, 2000,7(5):28-34.
4Pottie G J, Kaiser W J.Wireless integrated network sensors[J].Communications of the ACM, 2000,43(5):51-58.
