Identity-based network security for commercial blockchain services

While blockchain services hold great promise to improve many different industries, there are significant cybersecurity concerns which must be addressed. In this paper, we present experimental test bed results for a novel method of user identity management for cloud-based blockchain applications. Using a BlackRidge Technology endpoint on a Windows host, we insert cryptographic identity tokens on the first packet to request a new session. A corresponding gateway appliance in the cloud enforces security policy, blocking unauthorized access at or below the transport layer. Results of penetration testing a sample Hyperledger 1.0 application are discussed. We also demonstrate network segmentation and traffic separation, which allows multiple organizations to share blockchain infrastructure and facilitates compliance auditing.