基于对称密码学针对上下文信息匹配的消息传输算法的安全策略
邓志龙

南宁职业技术学院信息工程学院，广西 南宁530000

机会网络;上下文数据传输;对称密码学;可搜索加密算法

Improvement Research of Security Strategy in Message Transmission Algorithm in Opportunistic Networks
DENG Zhi—long

School of Information Engineering, Nanning College for Vocational and Technical, Nanning 530000，China

opportunistic networks; context message transmission algorithm; symmetric cryptography;searchable encryption algorithm

DOI:

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摘要：为了加密保护在不影响机会网络消息传输算法自身传输效率的前提下上下文信息可能暴露在不可信任的机会网络节点环境中，提出了一种基于上下文信息的可搜索对称密码算法对数据传输进行加密。该算法将包含目的 节点关键信息的关键字转换成为可搜索并可加密的消息头，将加密算法与信息数据的关键字优化配对，既能够向目的 节点进行安全可靠的数据传输，亦可在数据传输过程中对其进行加密处理以保证其安全性。采用网络仿真工具ONE对该信任路由算法进行模拟实验，结果表明，利用对称密码学实施安全策略更符合机会网络节点特征，并且本文采用的安全策略并不影响其数据到达率以及消息较大延迟；本文所建立的算法较之现有已报道的算法，具有较高的数据包转发成功率以及较小的消息延迟率，二者达到平衡。

In order to encipherment protection context information in opportunistic networks of message transmission algorithm for the environment of distrust. We proposed a security strategy for message transmission based on searchable encryption algorithm of the context information. The algorithm can transform key words of destination node to searchable encryption message header, it will automatically match searchable encryption message header with keyword trapdoor, that can realize the transmission of a message, and don’t leak the context information. The results based on ONE simulator shows that security strategy for message transmission algorithm based on context information more consistent with characteristic of opportunistic network nodes, and it don’t affect the data delivery ratio and high message latency of the opportunistic network;Through analyzing benchmark of message transmission algorithm and comparing with other algorithms, we verifie d the excellent performance of the algorithm which bring forward success ratio and message latency into balance.

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