CAJ | 학술논문

利用异构无线传感器网络中普通节点和簇头节点间的差异性,基于中心可分解型按对平衡设计构造了异构的节点密钥环,设计了2种密钥预分配方案DCPBD和VDCPBD.其中,DCPBD利用了中心可分解类型PBD,将普通区组作为普通节点的密钥环,将特殊区组作为簇头节点的密钥环.VDCPBD基于DCPBD进行了扩展,将单一核密钥替换为基于另一密钥池进行SBIBD设计出的簇间密钥环,减小了DCPBD由于单个簇头节点被俘后对整个网络抗毁性的影响.由于在设计时考虑了节点的异构特性,使用确定性方法构造了异构密钥环,使得在保持密钥连通率不变的前提下获得了更低的空间复杂度.仿真实验表明,2个方案都支持大规模网络,且单跳密钥连通率随网络规模增大而趋近于1,2跳连通率恒为1.VDCPBD还具备了更强的抗节点捕获能力和更好的网络可扩展性.
이용이구무선전감기망락중보통절점화족두절점간적차이성,기우중심가분해형안대평형설계구조료이구적절점밀약배,설계료2충밀약예분배방안DCPBD화VDCPBD.기중,DCPBD이용료중심가분해류형PBD,장보통구조작위보통절점적밀약배,장특수구조작위족두절점적밀약배.VDCPBD기우DCPBD진행료확전,장단일핵밀약체환위기우령일밀약지진행SBIBD설계출적족간밀약배,감소료DCPBD유우단개족두절점피부후대정개망락항훼성적영향.유우재설계시고필료절점적이구특성,사용학정성방법구조료이구밀약배,사득재보지밀약련통솔불변적전제하획득료경저적공간복잡도.방진실험표명,2개방안도지지대규모망락,차단도밀약련통솔수망락규모증대이추근우1,2도련통솔항위1.VDCPBD환구비료경강적항절점포획능력화경호적망락가확전성.
The discrepancy of common nodes and cluster head nodes in heterogeneous wireless sensor networks was used, the heterogeneous key chain of nodes based on divisible core pair-wise balanced design was constructed, and key pre-distributed schemes, DCPBD and VDCPBD were designed. DCPBD was based on the divisible core pair-wise bal-anced design (termed of PBD), and the common blocks map as the common node's key chains and the particular blocks map as the cluster bead's key chains. VDCPBD was extended from DCPBD, and also the single core was replaced by an-other key pool which was designed by SBIBD, and decreased the influence of the single cluster head's compromise and enhanced the networks' survivability. As the heterogeneous attribute in design was considered, and the certainty method to construct the heterogeneous key chains and acquire lower space complexity without changing the key connectivity. Simulation shows that both of two schemes sustain large-scale networks and, as the networks' scale increases, the single hop key connectivity approaches to 1, the double hop key connectivity is 1 constantly. VDCPBD also has better resilience against node capture and better networks' extensibility.