Publications (8)
LP formulations for secrecy over erasure networks with feedback
Athanasios Papadopoulos, Laszlo Czap, Christina Fragouli
We design polynomial time schemes for secure message transmission over arbitrary networks, in the presence of an eavesdropper, and where each edge corresponds to an erasure channel…
Secret message capacity of a line network
Athanasios Papadopoulos, Laszlo Czap, Christina Fragouli
We investigate the problem of information theoretically secure communication in a line network with erasure channels and state feedback. We consider a spectrum of cases for the pri…
Hard-Attention for Scalable Image Classification
Athanasios Papadopoulos, PaweÅ Korus, Nasir Memon
Can we leverage high-resolution information without the unsustainable quadratic complexity to input scale? We propose Traversal Network (TNet), a novel multi-scale hard-attention a…
IllusionPIN: Shoulder-Surfing Resistant Authentication Using Hybrid Images
Athanasios Papadopoulos, Toan Nguyen, Emre Durmus +1
We address the problem of shoulder-surfing attacks on authentication schemes by proposing IllusionPIN (IPIN), a PIN-based authentication method that operates on touchscreen devices…
The Robo-AO automated intelligent queue system
Reed L. Riddle, Kristina Hogstrom, Athanasios Papadopoulos +2
Robo-AO is the first automated laser adaptive optics instrument. In just its second year of scientific operations, it has completed the largest adaptive optics surveys to date, eac…
The Robo-AO software: Fully autonomous operation of a laser guide star adaptive optics and science system
Reed L. Riddle, Mahesh P. Burse, Nicholas M. Law +8
Robo-AO is the first astronomical laser guide star adaptive optics (AO) system designed to operate completely independent of human supervision. A single computer commands the AO sy…