Corpus ID: 6035093

Definitional Issues in Functional Encryption

  title={Definitional Issues in Functional Encryption},
  author={A. O'Neill},
  journal={IACR Cryptol. ePrint Arch.},
  • A. O'Neill
  • Published 2010
  • Computer Science
  • IACR Cryptol. ePrint Arch.
  • We provide a formalization of the emergent notion of “functional encryption,” as well as introduce various security notions for it, and study relations among the latter. In particular, we show that indistinguishability and semantic security based notions of security are inequivalent for functional encryption in general; in fact, “adaptive” indistinguishability does not even imply “non-adaptive” semantic security. This is alarming given the large body of work employing (special cases of) the… CONTINUE READING

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