David is a cryptography and information security expert with over 35 years of experience applicable to blockchains, payment systems, IoT, smart grid, digital rights management and government voice and data critical infrastructure communications. He invented the Digital Signature Algorithm/DSA (FIPS 186) and was the principal architect of Membership Services identity management for Linux Foundation Hyperledger Fabric. David is a graduate of Rutgers University, Johns Hopkins University and University of Southern California.