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    Secure Multiplication of Shared Secrets In The Exponent

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    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.
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