TY - Journal of Beijing University of Posts and Telecommunications A1 - LI Ning, LIU Xiao, DENG Zhong-liang T1 - Efficient Multi-Level Key Update Scheme Based on Cluster and Random Key Pre-Distribution Y1 - 2013-05-22 00:00:00.0 JF - Journal of Beijing University of Posts and Telecommunications JO - Journal of Beijing University of Posts and Telecommunications SP - 7 EP - 12 VL - 36 IS - 4 UR - {https://journal.bupt.edu.cn/EN/10.13190/jbupt.201304.6.046} N1 - 10.13190/jbupt.201304.6.046 ER -