CAJ | 학술논문

组密钥管理是传感器网络安全研究中的重点之一。针对现有组密钥管理机制难以在资源受限的传感器节点上实现的问题，给出了一种改进哈希链算法，并基于改进哈希链算法提出了一种新的传感器网络组密钥管理方案IHash-key。 IHash-key将组密钥信息隐藏在改进哈希链中，通过网络管理中心( KMC )周期广播哈希链信息，节点根据收到的信息计算和更新组密钥，可以简单、安全地实现组密钥管理。介绍了IHash-key的初始化、组密钥更新和节点恢复及新节点入网等关键步骤。通过对方案的前向安全性、后向安全性、通信开销、计算开销、存储开销等指标和抗捕获能力的分析结果表明， IHash-key具有管理简单、节点开销小、安全性高等特点。
조밀약관리시전감기망락안전연구중적중점지일。침대현유조밀약관리궤제난이재자원수한적전감기절점상실현적문제，급출료일충개진합희련산법，병기우개진합희련산법제출료일충신적전감기망락조밀약관리방안IHash-key。 IHash-key장조밀약신식은장재개진합희련중，통과망락관리중심( KMC )주기엄파합희련신식，절점근거수도적신식계산화경신조밀약，가이간단、안전지실현조밀약관리。개소료IHash-key적초시화、조밀약경신화절점회복급신절점입망등관건보취。통과대방안적전향안전성、후향안전성、통신개소、계산개소、존저개소등지표화항포획능력적분석결과표명， IHash-key구유관리간단、절점개소소、안전성고등특점。
Group key management is a key issue of the sensor network security. To solve the problem that exist-ing group key management mechanisms are hard to work in resource-constrained sensor nodes, we propose an im-proved Hash chains algorithm, and present IHash-key: a new group key management scheme based on that algo-rithm. In IHash-key, the information of group key is hidden in the Hash chain. The group key can be calculated and updated easily and safely through the broadcast with the information of Hash chain elements from the key management centre ( KMC) . We discuss the main steps of the IHash-key including initialization, group key updates and joining or rejoining of nodes. The analysis of IHash-key about the forward secrecy, backward secrecy, computation overload, communication overload, storage overload and the capability of anti-capture shows that IHash-key is applicable to wireless sensor networks for its convenient management, low overload and high security.