Welcome to the resource topic for 2000/024
Title:
Security of the Most Significant Bits of the Shamir Message Passing Scheme
Authors: Maria Isabel Gonzalez Vasco, Igor E. Shparlinski
Abstract:Boneh and Venkatesan have recently proposed a polynomial time
algorithm for recovering a ``hidden’’ element \alpha of a
finite field \F_p of p elements from rather short
strings of the most significant bits of the remainder
mo-du-lo p of \alpha t for several values of t selected uniformly
at random from \F_p^*. Unfortunately the applications to the
computational security of most significant bits
of private keys of some finite field exponentiation based cryptosystems
given by Boneh and Venkatesan are not quite correct. For the Diffie-Hellman
cryptosystem the
result of Boneh and Venkatesan has been corrected and
generalized in our recent paper.
Here a similar analysis is given for the Shamir message passing scheme.
The results depend on some bounds
of exponential sums.
ePrint: https://eprint.iacr.org/2000/024
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