An information services algorithm to heuristically summarize IP addresses for a distributed, hierarchical directory service. - Marcos Portnoi; D. Martin Swany; Jason Zurawski (GRID, 2010)

Secure Zones: An Attribute-Based Encryption advisory system for safe firearms. - Marcos Portnoi; Chien-Chung Shen (CNS, 2013)

Location-aware sign-on and key exchange using attribute-based encryption and Bluetooth beacons. - Marcos Portnoi; Chien-Chung Shen (CNS, 2013)

Study of the Network Impact on Earthquake Early Warning in the Quake-catcher Network Project. - Marcos Portnoi; Samuel Schlachter; Michela Taufer (ICCS, 2014)

Criptografia com Curvas Elípticas. - Marcos Portnoi (CoRR, 2014)

TARVOS - an Event-Based Simulator for Performance Analysis, Supporting MPLS, RSVP-TE, and Fast Recovery. - Marcos Portnoi; Joberto S. B. Martins (CoRR, 2014)

Wireless-Delimited Secure Zones with Encrypted Attribute-Based Broadcast for Safe Firearms. - Marcos Portnoi; Chien-Chung Shen (CoRR, 2014)

Loc-Auth: Location-enabled authentication through attribute-based encryption. - Marcos Portnoi; Chien-Chung Shen (ICNC, 2015)

Network Simulator - Visão Geral da Ferramenta de Simulação de Redes. - Marcos Portnoi; Rafael Gonçalves Bezerra de Araújo (CoRR, 2015)

Location-enhanced authenticated key exchange. - Marcos Portnoi; Chien-Chung Shen (ICNC, 2016)