RSNC-based Mechanism against Content Pollution Attack Method in NDN

Abstract

Network coding facilitates content distribution for named data networking (NDN), which improves the cache hit ratio, decreases average download time and reduces transmission amount. However, NDN is likely to cause content pollution attacks because of the cache mechanism and network coding. Request-specific network coding (RSNC) is a new class of network coding mechanism, by introducing the homomorphic hash mechanism, and this paper proposes a new method based on RSNC mechanism against content pollution attack in NDN. The new method, firstly, ensures consumers receiving linear independent coding blocks by using RSNC. Secondly, the content server adopts content-chunk-based transmission mechanism, and binds the name and content by homomorphic signing the transferred content blocks and names. Thirdly, using dynamic public key technique, our scheme authenticates each generation without updating the initial secret key. Finally, using homomorphic hash can verify the signature receives by intermediate nodes or the destination nodes. By security analysis and proof, the new method can resist the content pollution attack in the named data networking while guaranteeing the network performance and resist the Intra/Inter-GPAs at the same time.