Journal of Information Security and Cryptography (Enigma)

Geraldo A. Barbosa
PhD, CEO of QuantaSec – Consulting and Projects in Phys- ical Cryptography

Geraldo A. Barbosa was born in Brazil, in 1943. PhD (Physics)/University of Southern California, 1974. Ar- eas of work: Quantum Optics and Condensed Matter (Theory and Experiment). Full Professor, Universi- dade Federal de Minas Gerais/MG/Brazil (up to 1995); Northwestern University (2000/2012) and CEO, Quan- taSec Consultoria e Projetos em Criptografia F ́ısica Ltda /Brazil. Member of American Physical Society and Sociedade Brasileira de Física. Established sev- eral research laboratories including the first Quantum Optics laboratory in Brazil, where a quantum image was first demonstrated worldwide. Has patents in cryptography, including the very first Brazilian patent in quantum cryptography: INPI-PI9806314. This system is similar to a BB84 protocol but works in time coincidences with two independently polarized photons to eliminate background noises. Another patent covers the alpha eta encryption system (inventors: H. P. Yuen, P. Ku- mar, and G. A. Barbosa), developed under support from Defense Advanced Research Projects Agency (DARPA)- Department of Defense. A patent be- ing implemented through support from Renasic (Rede Nacional de Seguranc ̧a da Informac ̧a ̃o e Criptografia) is entitled “Fast multi-photon key distribution scheme secured by quantum noise” (US-2005-0152540-A1 and Brazil-INPI 002872/G. A. Barbosa).