%A FENG Dengguo, WU Chuankun %T Advances in cryptography and information security—introduction of 2002-2006 progress of SKLOIS %0 Journal Article %D 2007 %J Front. Comput. Sci. %J Frontiers of Computer Science %@ 2095-2228 %R 10.1007/s11704-007-0037-9 %P 385-396 %V 1 %N 4 %U {https://journal.hep.com.cn/fcs/EN/10.1007/s11704-007-0037-9 %8 2007-12-05 %X This paper introduces the research progress of the State Key Laboratory of Information Security (SKLOIS) in China during 2002–2006. This introduction covers four selected areas with each covering some selected research findings. The four selected areas are: the fundamentals of cryptography; the design, analysis and testing of block cipher algorithms; the design and analysis of security protocols based on computational intractability; authentication, authorization and their applications.