Netinfo Security ›› 2019, Vol. 19 ›› Issue (2): 36-42.doi: 10.3969/j.issn.1671-1122.2019.02.005

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Homomorphic Ring Signature Scheme Technology for Multi-source Network Coding

Huifang YU(), Xinzhe GAO   

  1. School of Computer, Qinghai Normal University, Xining Qinghai 810082, China
  • Received:2018-05-15 Online:2019-02-10 Published:2020-05-11

Abstract:

As a new network transmission mechanism, the network coding has the advantages of large throughput, great robustness and fast speed. However, the network coding is easy to suffer from the pollution attacks. Since the traditional signature technique cannot apply to the multi-source network coding.To this end, we construct a homomorphic ring signature scheme for multi-source network coding using the thoughts Schnorr signature and homomorphic encryption. Its security is based on the hardness of the computation Diffie-Hellman (CDH) and discrete logarithm (DL) problems. In this scheme, each source node in the scenario signs the message with its own private key, and the sink node is verified with a public key. Moreover, we introduce the time concept into ring signature to resist both pollution attacks and replay attacks.

Key words: multi-source network coding, homomorphic ring signature, pollution attack, replay attack

CLC Number: