Sumit Kumar Pandey, Rana Barua (auth.), Yongwha Chung, Moti's Information Security Applications: 11th International PDF

Sumit Kumar Pandey, Rana Barua (auth.), Yongwha Chung, Moti's Information Security Applications: 11th International PDF

By Sumit Kumar Pandey, Rana Barua (auth.), Yongwha Chung, Moti Yung (eds.)

This booklet constitutes the refereed lawsuits of the eleventh overseas Workshop on details protection functions, WISA 2010, held in Jeju Island, Korea, in August 2010.

The 25 revised complete papers awarded have been rigorously reviewed and chosen from 107 submissions. The papers are geared up in topical sections on cryptosystem, implementation, cellular security/secure coding, assault, biometrics, and safe protocol.

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Read Online or Download Information Security Applications: 11th International Workshop, WISA 2010, Jeju Island, Korea, August 24-26, 2010, Revised Selected Papers PDF

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Extra resources for Information Security Applications: 11th International Workshop, WISA 2010, Jeju Island, Korea, August 24-26, 2010, Revised Selected Papers

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Let e : G × G → GT be a polynomial-time computable bilinear non-degenerate map called pairing. We say that G, GT are bilinear groups with the pairing e. The gap Bilinear Diffie-Hellman (BDH) problem [2] is as follows. Define the computational BDH function BDH : G3 → GT as BDH(g a , g b , g c ) = e(g, g)abc and the decisional BDH predicate DBDH : G4 → {0, 1} as a function which takes an input (g a , g b , g c , e(g, g)d ) and returns the bit one if abc = d mod p or the bit zero otherwise. An adversary A is given input g a , g b , g c ∈U G selected uniformly randomly and can access the DBDH(·, ·, ·, ·) oracle, and tries to compute BDH(g a , g b , g c ).

The gap BDH solver S begins by establishing n honest users that are assigned random static key pairs. In addition to the above steps, S embeds instance (U = g u , V = g v , W = g w ) of the gap BDH problem as follows. Let δA and δB be the target conditions selected by A. S sets the public master key as Z = e(U, V ) = gTuv , Ti = g βi for i ∈ δA , and Ti = V βi = g vβi for i ∈ δA , where S selects βi ∈U Zq randomly. S randomly selects two users UA and UB and integers jA ∈R [1, s], that becomes a guess of the test session with probability 1/n2 s.

The solver S activates A on this set of users and awaits the actions of A. We next describe the actions of S in response to user activations and oracle queries. Simulation. The solver S simulates oracle queries as follows. S maintains list LH that contains queries and answers of H oracle, and list LS that contains queries and answers of SessionKeyReveal, 1. Send(Π, P, γi , γj ): S selects a string δi , picks ephemeral secret key x ∈U Zq , honestly computes ephemeral public key δˆi , records (Π, P, γi , γj , δˆi ), and returns it.

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