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Randomized functional encryption ( \(\textsf{rFE}\) ) generalizes functional encryption ( \(\textsf{FE}\) ) by incorporating randomized functionalities. Randomized multi-input functional encryption ( \(\textsf{rMIFE}\) ) extends \(\textsf{rFE}\) to accommodate multi-input randomized functionalities. In this paper, we reassess the framework of \(\textsf{rFE}/\textsf{rMIFE}\) enhancing our understanding of this primitive and laying the groundwork for more secure and flexible constructions in this field. Specifically, we make three key contributions:

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(Multi-input) \(\textsf{FE}\) for Randomized Functionalities, Revisited

  • 会议论文

  • 发表日期：

    2026年

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  • Pratish Datta,
  • Jiaxin Guan,
  • Alexis Korb,
  • Amit Sahai

摘要

Randomized functional encryption ( \(\textsf{rFE}\) ) generalizes functional encryption ( \(\textsf{FE}\) ) by incorporating randomized functionalities. Randomized multi-input functional encryption ( \(\textsf{rMIFE}\) ) extends \(\textsf{rFE}\) to accommodate multi-input randomized functionalities. In this paper, we reassess the framework of \(\textsf{rFE}/\textsf{rMIFE}\) enhancing our understanding of this primitive and laying the groundwork for more secure and flexible constructions in this field. Specifically, we make three key contributions: