We introduce the notion of \emph{universal parameters} as a method for generating the
trusted parameters for many schemes from just a single trusted setup. In such a scheme
a trusted setup process will produce universal parameters $U$. These parameters can
then be combined with the description, $d(\cdot)$ of any particular cryptographic setup
algorithm to produce parameters $p_d$ that can be used by the cryptographic system associated
with $d$. We give a solution in the random oracle model based on indistinguishability obfuscation.
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