Provably Secure Anonymous Authentication Key Agreement Protocol for Multicast Group
Provably Secure Anonymous Authentication Key Agreement Protocol for Multicast Group
复制标题
可证明安全的多播组匿名认证密钥协商协议
DOI：
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发表时间：
2011
期刊：
影响因子：
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通讯作者：
Ma, Jian-Feng
中科院分区：
文献类型：
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作者：
Feng, Tao;Liu, Yuan-Yuan;Ma, Jian-Feng
利用环签密的思想，基于双线性Diffie-Hellman（BDH）假设，提出了一个高效的匿名群密钥协商方案，该方案在保证群成员身份认证的前提下建立安全的群密钥，对群内和群外成员实现了不同程度的匿名性，即外部用户完全无法获知群内成员结构的任何信息，为了实现组密钥的前向安全性和后向安全性，新方案支持组成员在外部节点加入组或内部成员离开组时更新组密钥，该方案只需一轮建立组会话密钥，从而有效地降低了其计算复杂度和存储成本。
With the idea of ring signcryption,an efficient anonymous group key agreement scheme is presented based on the Bilinear Diffie-Hellman(BDH) assumption.The scheme establishes a secure group key under the premise of authenticating group members.For both internal and external group members the scheme achieves different degree of anonymity,that is,the external users can absolutely not learn any information about the internal membership structure,and the internal users only can find out the member composition but cannot recognize the identity of any member.In order to achieve the forward security and backward security of group key,new scheme supports group members to renew their group key when the external nodes join the group or the internal members leave the group.The proposed scheme can establish the group session key through only one round,and therefore,its computation complexity and storage cost are efficiently reduced.