Welcome to the resource topic for 2003/057
Title:
Secure Multiplication of Shared Secrets in the Exponent
Authors: Mario Di Raimondo, Rosario Gennaro
Abstract:We present a new protocol for the following task. Given
tow secrets a,b shared among n players, compute the value
g^{ab}.
The protocol uses the generic BGW approach for multiplication
of shared secrets, but we show that if one is computing
``multiplications in the exponent’’ the polynomial randomization
step can be avoided (assuming the Decisional Diffie-Hellman Assumption
holds). This results in a non-interactive and more efficient protocol.
ePrint: https://eprint.iacr.org/2003/057
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