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Witness Encryption via Prime-Order Generic Groups

Hair, Isaac M et al.
arXiv (All) · Papers
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cryptography-and-security
We unconditionally construct witness encryption for NP in the classical generic-group model, using an ordinary cyclic group of prime order. For SAT instances of size $n$, the encryption algorithm runs in time poly$(n)$, and any satisfying assignment can be used to decrypt in poly$(n)$ time with corr
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