A Lightweight Block Storage Security Scheme based on LT Coding for 6G Network

The 6G is the space-terrestrial integrated network combining the Internet of Things and satellite network. And the data security problem of 6G network has become a research hotpot. The introduction of blockchain technology in 6G network can effectively improve the safety of data storage. However, with the continuous addition of IoT nodes and satellite nodes, more and more data are stored in blocks, which makes the problems of large storage space and low storage efficiency prominent. Therefore, for 6G network, this paper proposes a lightweight block storage security scheme based on LT coding. In the proposed storage scheme, satellite nodes are responsible for the complete storage of the blockchain. The blocks are encoded by using LT code and stored at the satellite nodes in the form of slices, while the latest blocks are stored in IoT nodes. This greatly reduces the storage burden of 6G network. To suit large-scale nodes of 6G network, the traditional blockchain indexing method has been improved. The IoT nodes can calculate the jump block number according to their own block number, thus realizing the jump indexing and verification of the block. Finally, the simulation results prove that the proposed storage scheme has superior performance in block recovery success rate and block storage occupancy.