Abstract: Embodiments herein provide a method, system, etc. for a sovereign information sharing service. More specifically, a method for secure distributed query processing comprises storing data tables from at least one data provider in at least one first computer comprising a sovereign server. Next, encrypted input and output of the data tables is performed between the server and a second computer. Following this, join operations are computed, comprising determining whether arbitrary join predicates yield matches within the data tables; and encrypted results of the join operations are output. The method minimizes possible information leakage from interaction between the server and the second computer by making observations and inferences from patterns of the outputting of the encrypted results.

Abstract: Embodiments herein provide a method, system, etc. for a sovereign information sharing service. More specifically, a method for secure distributed query processing comprises storing data tables from at least one data provider in at least one first computer comprising a sovereign server. Next, encrypted input and output of the data tables is performed between the server and a second computer. Following this, join operations are computed, comprising determining whether arbitrary join predicates yield matches within the data tables; and encrypted results of the join operations are output. The method minimizes possible information leakage from interaction between the server and the second computer by making observations and inferences from patterns of the outputting of the encrypted results.

Abstract: A virtual active network architecture of proxy servers for providing streaming media data over wide area networks includes forming a hierarchical structure of proxy servers for multiplexing and delivering the live streaming media, and dynamically reconfiguring the hierarchical structure based upon user population, user distribution, usage patterns and network conditions. Separate virtual active networks sharing proxy servers in different hierarchical structures are formed for different streams of media data, and the different hierarchical structures are dynamically reconfigured independently of one another. Redistribution and consolidation of data paths through the hierarchical structures is performed by the proxy network coordinator in response to messages from the proxy servers of a hierarchical structure.