【作者】 贺金鑫； 徐高潮； 付晓东； 周治国； 姜建华；

【Author】 He Jinxin~(1,2),Xu Gaochao~1,Fu Xiaodong~1,Zhou Zhiguo~(1,3),and Jiang Jianhua~(1,4) 1(College of Computer Science and Technology,Jilin University,Changchun 130012) 2(College of Earth Sciences,Jilin University,Changchun 130061) 3(Computer College,Northeast Normal University,Changchun 130024) 4(Information Department,Changchun Taxation College,Changchun 130117)

【机构】 吉林大学计算机科学与技术学院； 吉林大学地球科学学院； 东北师范大学计算机学院； 长春税务学院信息系；

【摘要】 组播数据的认证是安全组通信中的重点和难点问题之一,但目前没有一种有效方法能够真正适合所有组播应用领域的需求,如散列树的通信开销太大,而散列链不能应对网络传输中的数据丢包.因此基于这两种方法提出了一种复合型组播数据认证方法HAMA(hybrid approach to multicastauthentication).通过性能分析与数据对比表明,HAMA的通信开销低于散列树,发生数据丢包时的认证概率高于散列链,且提供不可抵赖认证.所以HAMA是一种安全、有效、实用的组播数据认证方法,尤其适用于远程软件更新等非实时组播应用.更多还原

【Abstract】 Multicast authentication is one of the most important and difficult problems in secure group communications,but no approaches adapt to all multicast applications.For example,the communication overhead of hash tree is too expensive,and hash chain is useless for the packet losses. So a hybrid approach to multicast authentication(HAMA) is proposed based on hash tree and hash chain.Through performance analyses and data comparisons,the total signature number of HAMA is less than hash tree,and the authentication probability is superior to hash chain.HAMA also affords non-repudiation,so it is secure,efficient and especially practical to unreal-time multicast applications, such as updating remote software.更多还原