Access Control Scheme Based on Combination of Blockchain and XOR-Coding for ICN

摘要

Information Centric Networking (ICN) achieves high efficient via in-networking cache and direct object retrieval, i.e., content can be replicated and cached at any network nodes. However, the content is out of owner's control after published. With access control issues becoming more prominent, we propose combining the blockchain with traditional access control schemes in this paper. As all we know, blockchain has become one of the most popular technologies in recent years. This technology has been applied to various cryptographic currency, such as Bitcoin, Litecoin and so on. Due to its decentralized and untempered paradigm, using blockchain in access control is an ideal scheme. We utilize xor-based encoding/decoding scheme to realize fast encryption and decryption, which would save content provider plenty of time. Especially, when the content provider is off-line, our scheme could realize that authorized users also can obtain decryption information related contents. The security analysis proves that our access control framework is pretty safe.