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ICALP
2005
Springer
14 years 1 months ago
Computational Bounds on Hierarchical Data Processing with Applications to Information Security
Motivated by the study of algorithmic problems in the domain of information security, in this paper, we study the complexity of a new class of computations over a collection of va...
Roberto Tamassia, Nikos Triandopoulos
ECCC
2008
168views more  ECCC 2008»
13 years 7 months ago
Algebrization: A New Barrier in Complexity Theory
Any proof of P = NP will have to overcome two barriers: relativization and natural proofs. Yet over the last decade, we have seen circuit lower bounds (for example, that PP does n...
Scott Aaronson, Avi Wigderson
CSFW
2009
IEEE
14 years 2 months ago
Minimal Message Complexity of Asynchronous Multi-party Contract Signing
Multi-party contract signing protocols specify how a number of signers can cooperate in achieving a fully signed contract, even in the presence of dishonest signers. This problem h...
Sjouke Mauw, Sasa Radomirovic, Mohammad Torabi Das...
TCC
2010
Springer
179views Cryptology» more  TCC 2010»
14 years 4 months ago
Private Coins versus Public Coins in Zero-Knowledge Proof Systems
Goldreich-Krawczyk (Siam J of Comp’96) showed that only languages in BPP have constant-round public-coin black-box zero-knowledge protocols. We extend their lower bound to “ful...
Rafael Pass, Muthuramakrishnan Venkitasubramaniam
ALGORITHMICA
2010
154views more  ALGORITHMICA 2010»
13 years 7 months ago
On the Convergence of Multicast Games in Directed Networks
We investigate the convergence of the price of anarchy after a limited number of moves in the classical multicast communication game when the underlying communication networks is ...
Angelo Fanelli, Michele Flammini, Luca Moscardelli