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中文摘要：
针对无线传感器网络节点能量、计算和存储有限的特点,以及公开密钥算法和数字签名实施认证耗能多等不足,把声誉和信任组思想用在无线传感器网络中,提出了基于声誉和信任组的无线传感器网络实体认证协议,通过引入对称密钥加密算法,避免了采用公开密钥算法实施数字签名计算量大的问题,有效地降低了认证的时延、增大了网络生存期。模拟实验证明了该方案的有效性。
英文摘要：
To the problems of the limited energy, computation and memory of the nodes in sensor network as well as authentication using the public key algorithm and the digital signature which consumes more energy. The idea of Reputation and the Trust Troop in the wireless sensor network are adopted. We proposed a Reputation and Trust-troop Based Entity Authentication Mechanism for Wireless Sensor Network. We use the concepts of nodes＇ reputation and the trust group to obtain the effective securesafe authentication strategy. In RTTAS （A Reputation and Trust-troop Based Entity Authentication Mechanism for Wireless Sensor Network）, the symmetrical key algorithm is used. All of these factors can effectively reduce the authentication delay and prolong the network lifetime. The scheme is proved valid through the simulation experiment.
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