Delegatable pseudorandom functions and applications

IACR Cryptology ePrint Archive, pp. 669-684, 2013.

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Abstract:

We put forth the problem of delegating the evaluation of a pseudorandom function (PRF) to an untrusted proxy and introduce a novel cryptographic primitive called delegatable pseudorandom functions, or DPRFs for short: A DPRF enables a proxy to evaluate a pseudorandom function on a strict subset of its domain using a trapdoor derived from ...More

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