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A chaos-based keyed hash function for secure protocol and messege authentication in mobile ad hoc wireless networks

机译：用于移动自组织无线网络中安全协议和消息身份验证的基于混沌的键控哈希函数

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The design of communication protocols in the Mobile Ad hoc Networks (MANET) is challenging due to limited wireless transmission ranges of node mobility, limited power resources, and limited physical security. The advantages of MANET include simple and fast deployment, robustness, adaptive and self-organizing networks. Nonetheless, routing protocols are important operations for communication among wireless devices. Assuring secure routing protocols is challenging since MANET wireless networks are highly vulnerable to security attacks. Most traditional routing protocols and message authentication designs do not address security, and are mainly based on a mutual trust relationship among nodes. This paper therefore proposes a new chaos-based keyed hash function that can be used for communication protocols in MANET. The proposed chaotic map realizes an absolute-value nonlinearity, which offers robust chaos over wide parameter spaces, i.e. high degree of randomness through chaoticity measurements using Lyapunov exponent. The proposed keyed hash function structure is compact through the use of a single stage chaos-based topology. Hash function operations involve an initial stage when the chaotic map accepts input message and initial conditions, and a hashing stage where alterable-length hash values are generated iteratively. Hashing performances are evaluated in terms of original message condition changes, statistical analyses, and collision analyses. Results of hashing performances show that the mean changed probabilities are very close to 50%, and the mean changed bit number is also close to a half of hash value lengths. The proposed keyed hash function enhances the collision resistance, comparing to typical MD5 and SHA1, and is faster than other complicated chaos-based approaches.
机译：由于节点移动性的无线传输范围有限，功率资源有限和物理安全性有限，因此移动自组织网络（MANET）中的通信协议的设计具有挑战性。 MANET的优点包括简单快速的部署，健壮性，自适应和自组织网络。尽管如此，路由协议还是用于无线设备之间通信的重要操作。由于MANET无线网络极易受到安全攻击，因此确保安全路由协议具有挑战性。大多数传统的路由协议和消息身份验证设计都没有解决安全问题，并且主要基于节点之间的相互信任关系。因此，本文提出了一种新的基于混沌的键控哈希函数，该函数可用于MANET中的通信协议。所提出的混沌图实现了绝对值非线性，从而在宽参数空间上提供了鲁棒的混沌，即通过使用Lyapunov指数进行混沌测量来提供高度的随机性。通过使用单级基于混沌的拓扑，提出的键控哈希函数结构是紧凑的。哈希函数操作涉及一个初始阶段，即混沌映射接受输入消息和初始条件，以及一个哈希阶段，其中迭代生成可变长度的哈希值。哈希性能是根据原始消息条件的变化，统计分析和冲突分析进行评估的。哈希性能结果表明，平均变化概率非常接近50％，平均变化位数也接近哈希值长度的一半。与典型的MD5和SHA1相比，所提出的键控哈希函数增强了抗冲突性，并且比其他复杂的基于混沌的方法要快。

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