Conference Key Distribution Systems (CKDS) are well-analyzed systems for the computation and distribution of a symmetric key shared amongst a session's participants. We focus on previous CKDS with user anonymity and we propose modifications from the perspective of anonymity, dynamicity, efficiency and security crystallized in a novel CKDS design. The security of the proposed anonymous CKDS is based on the difficulty of computing discrete logarithms over Elliptic Curves, the intractability of inverting one-way hash functions and the creation of random, however disjoint, pseudonyms by the group members. Under these modifications, our proposed dynamic CKDS can be ported to clustered Mobile Ad Hoc Networks so that the members of a mobile group can rapidly establish a shared Conference Key. We demonstrate the effectiveness of the proposed scheme through performance comparisons and security analysis that covers passive and active attack scenarios.

会议密钥分配系统（CKDS）是经过分析的系统，用于计算和分配在与会参与者之间共享的对称密钥。我们将重点放在先前具有用户匿名性的CKDS上，并从匿名性，动态性，效率和安全性的角度提出了一种新颖的CKDS设计中提出的修改建议。提议的匿名CKDS的安全性基于以下难点：计算椭圆曲线上的离散对数，反转单向哈希函数的难处理性以及组成员创建随机但不相交的假名。在这些修改下，我们建议的动态CKDS可以移植到群集的Mobile Ad Hoc网络，以便移动组的成员可以快速建立共享的会议密钥。