CAJ | 학술논문

身份认证是无线传感器网络安全的第一道屏障。针对现有无线传感器网络中的身份认证协议的效率和安全问题，基于Shamir门限秘密共享方案提出一种低功耗的身份认证协议。在不降低网络安全性的前提下，通过多个已认证节点对新节点进行身份认证，能够有效的降低认证过程中的计算量。认证过程中使用单向散列函数对通信数据进行加密并且运用时间戳机制抵御重放攻击。分析结果表明协议具有低功耗的特点，并且能够抵御窃听攻击、重放攻击以及少数节点被俘虏的攻击。
신빈인증시무선전감기망락안전적제일도병장。침대현유무선전감기망락중적신빈인증협의적효솔화안전문제，기우Shamir문한비밀공향방안제출일충저공모적신빈인증협의。재불강저망락안전성적전제하，통과다개이인증절점대신절점진행신빈인증，능구유효적강저인증과정중적계산량。인증과정중사용단향산렬함수대통신수거진행가밀병차운용시간착궤제저어중방공격。분석결과표명협의구유저공모적특점，병차능구저어절은공격、중방공격이급소수절점피부로적공격。
Identity authentication is the first safeguard for security of wireless sensor networks(WSNs). For the existing efficiency and safety issues of identity authentication protocol in WSNs, a low-power identity authentication protocol which is based on Shamir threshold secret sharing scheme is proposed .In the premise of not compromising the network’s security, the new node need to be authenticated by the majority of authorized nodes, therefore, the con-sumption of computation can be reduced effectively during the process of authentication. One-way hash function is used for encrypting communication data and also the timestamp mechanism for being against reply attacks in authen-tication process. Analytical results show that the protocol is low-power consumption and has the ability of resisting eavesdropping attacks, replaying attack and attack of a few nodes being captured.