Dr. Matthew D. Green is a cryptographer and security technologist. He designed several cryptographic tools, including Charm, a framework for rapidly prototyping cryptosystems, and a Functional Encryption library that provides implementations of several new Attribute Based Encryption schemes. Dr. Green led the team that developed the first anonymous cryptocurrencies, Zerocoin and Zerocash. His research team has exposed flaws in more than one third of SSL/TLS encrypted web sites as well as vulnerabilities in encryption technologies, including RSA BSafe, Exxon/Mobil Speedpass, EZpass, and automotive security systems.