CAJ | 학술논문

安全、高效的群组密钥管理方案是保证群组通信安全的关键。在综合考虑军队保密通信和群组密钥管理的特点及要求的基础上，提出一种基于等级树模型的群组密钥管理方案。根据军队隶属关系建立等级树模型，引入单向散列函数生成层间密钥以维护上下层访问权限，对底层小组的密钥管理采用一种逻辑密钥层次（ LKH，Logical Key Hierarchy ）的改进算法。对该方案的性能分析结果表明该方案在通信开销、密钥存储开销等方面优于其他同类方案。
안전、고효적군조밀약관리방안시보증군조통신안전적관건。재종합고필군대보밀통신화군조밀약관리적특점급요구적기출상，제출일충기우등급수모형적군조밀약관리방안。근거군대대속관계건립등급수모형，인입단향산렬함수생성층간밀약이유호상하층방문권한，대저층소조적밀약관리채용일충라집밀약층차（ LKH，Logical Key Hierarchy ）적개진산법。대해방안적성능분석결과표명해방안재통신개소、밀약존저개소등방면우우기타동류방안。
Secure and highly-efficient group key management is critical in secure group communication .A group key management scheme based on grade-tree model was proposed according to the characteristic of military secret communications and the need of group key management .The grade-tree model was established firstly according to relationship of administrative subordination . Then keys among levels were generated by one-way hash function in order to guarantee accessing popedom and a reformative LKH arithmetic was used to manage members in lowest subgroups .The performance of scheme is analysed , the result indicates:this scheme is better than other congener schemes in communications cost and key storage cost .