关键词: 多级混淆, 网络编码, 自然匿名, 一种喷泉编码模式（LT）

Abstract: Wireless networks are vulnerable to outside attacks. Existing anonymous communication scheme is unable to adapt to the resource-constrained wireless networks. The natural anonymous characteristics of network coding are better able to solve this problem, but its decoding rate is difficult to control. The codec characteristics of LT codes can effectively control the decode rate, at the same time, it can’t adapt to multi-stage transfer process. This paper that combines thoughts of the LT code and network coding and uses encoding and decoding method of LT codes can complete the multistage anonymous communication and make the sink’s decoding rate close to 1－δ when decoding by controlling the degree distribution of each node code package and restructuring coefficient matrix to complete coding again.

Key words: multistage confusion, network coding, natural?anonymous, Luby Transform（LT） code