关键词: 混合加密, 安全传输, 同态哈希函数, 网络编码方案, 无证书

Abstract: Network coding allows the intermediate node to encode the received message and forward it to the downstream node. However, there exists the insecurity of transmission data and the polluted information network nodes to waste many network resources. To solve the problems, a network coding hybrid encryption scheme (NCHES) suitable for Internet of things (IoT) system is devised in this article. NCHES realizes secure communication of arbitrary messages and uses a homomorphic hash function to resist the data pollution attacks; it has lower calculation overhead and higher data transmission efficiency in the IoT system.

Key words: hybrid encryption, secure transmission, homomorphic hash function, network coding scheme, certificateless