CAJ | 학술논문

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 multicast authentication).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.
조파수거적인증시안전조통신중적중점화난점문제지일,단목전몰유일충유효방법능구진정괄합소유조파응용영역적수구,여산렬수적통신개소태대,이산렬련불능응대망락전수중적수거주포.인차기우저량충방법제출료일충복합형조파수거인증방법HAMA(hybrid approach to multicast authentication).통과성능분석여수거대비표명,HAMA적통신개소저우산렬수,발생수거주포시적인증개솔고우산렬련,차제공불가저뢰인증.소이HAMA시일충안전、유효、실용적조파수거인증방법,우기괄용우원정연건경신등비실시조파응용.
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.