Adaptive Broadcast Routing Assignment Algorithm for Blockchain Synchronization Services

Transactions and blocks must be synchronized among the blockchain miners on the Internet. Software-defined networking and network function virtualization techniques support dynamically assigning computing resources into servers of the core and edge clouds. In this paper, an adaptive broadcast algorithm is proposed for blockchain authentication, authorization, and accounting (AAA) services. The cryptography is propagated throughout the Internet by using a broadcast mechanism. The broadcast message may incur a propagation delay and duplicate transmissions. The total propagation delay is assumed to be a combination of transmission time and computational time for data verification. A mathematical programming model is formulated to address the secure broadcast problem as a minimum spanning tree problem. The objective is to minimize the processing and transmission delay through reduced duplicate transmissions. Computational experiments demonstrate proof of concept to adopt blockchain techniques. The dynamic AAA architecture and path selection enable the blockchain operator to efficiently make decisions and achieve more secure services.