Evaluating 2-DNF Formulas on Ciphertexts

  title={Evaluating 2-DNF Formulas on Ciphertexts},
  author={Dan Boneh and Eu-Jin Goh and Kobbi Nissim},
Let ψ be a 2-DNF formula on boolean variables x1, . . . , xn ∈ {0, 1}. We present a homomorphic public key encryption scheme that allows the public evaluation of ψ given an encryption of the variables x1, . . . , xn. In other words, given the encryption of the bits x1, . . . , xn, anyone can create the encryption of ψ(x1, . . . , xn). More generally, we can evaluate quadratic multi-variate polynomials on ciphertexts provided the resulting value falls within a small set. We present a number of… CONTINUE READING
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