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对于车载自组织网络密码学是其解决网络安全解决方案的基础,公钥技术中的基于身份认证技术在车载自组织网络中十分有效,这主要归功于它简单的密钥管理过程和降低了内存存储的开销。然而目前对基于身份认证的密钥管理方案的研究不完善。当前方案要么没有考虑到车载自组织网络的必要需求,如缺少管理中心;要么不能处理重要技术运作,如密钥的撤销和更新。因此,本文提出一种IBC(Identity-Based Cryptography)方案,该方案是一种基于车载无线网络的完全自组织身份认证密钥管理方案。IBC不依赖任何认证中心或则可信第三方,即使在网络进行组网过程中。另外,IBC能够提供一种机制去撤销恶意或则被盗用节点的私钥同时更新未被盗用节点的密钥。仿真显示IBC不会对网络造成过高通信开销的同时依然十分有效。
In-vehicle ad-hoc network cryptography is the basis for its solution to network security, and identity-based authentication in public-key technology is very effective in automotive ad-hoc networks due to its simple key management process and reduced memory Storage overhead. However, the current research on key management scheme based on identity authentication is not perfect. Current solutions either fail to take into account the necessary requirements of in-car ad hoc networks such as the lack of a management center or the inability to handle key technical operations such as key revocation and renewal. Therefore, this paper proposes an Identity-Based Cryptography (IBC) scheme, which is a completely self-organizing identity authentication key management scheme based on vehicle wireless network. IBC does not rely on any certification authority or trusted third party, even when the network is in the process of networking. In addition, IBC can provide a mechanism to revoke a malicious or stolen node’s private key and update the key of an un-stolen node. The simulation shows that the IBC does not cause excessive communication overhead to the network while still being very effective.