Predavanje: Secure Communication on Networks with No Trusted Nodes Using Color Avoiding Percolation

Sažetak predavanja

Maintaining privacy and security on the internet is a major priority worldwide. Here we ask: Can secure communication be maintained, even if there are eavesdroppers on every node? To answer this question, we consider a colored network where no single color is trusted. Even though no nodes are trusted, the message can be divided and transmitted along multiple paths such that no single color receives the whole message. We develop a “color avoiding” percolation theory to identify the largest set of nodes which are mutually connectable in this way. We present analytic solutions for random networks including observation of a new critical exponent which is determined by the number of colors. We also find that in the autonomous systems network, a large fraction of nodes would be able to securely communicate with our heuristic. We believe that developing routing algorithms based on this approach is a promising way to utilize diversity to improve security.

O predavaču

Vinko Zlatić radi kao znanstveni suradnik na Zavodu za teorijsku fiziku Instituta Ruđer Bosković u Zagrebu. Doktorirao je teorijsku fiziku 2009 godine. Proveo je dvije godine kao poslijedoktorski istraživač u Rimu. Autor je 23 znanstvena CC rada s više od 500 citata. Sudjelovao je kao lokalni voditelj na FP7 projektu FOC-II (forecasting financial crisis) i trenutno vodi čvor Instituta Ruđer Bosković na FP7 projektu MULTIPLEX (Foundational Research on multilevel complex networks and systems). Znanstveni interesi su mu u području kompleksnih sustava i kompleksnih mreža te njihove primjene u ekonomiji i računalnim znanostima.