Public-Key Encryption with Registered Keyword Search

  title={Public-Key Encryption with Registered Keyword Search},
  author={Qiang Tang and Liqun Chen},
Public-key Encryption with Keyword Search (PEKS) enables a server to test whether a tag from a sender and a trapdoor from a receiver contain the same keyword. In this paper, we highlight some potential security concern, i.e. a curious server is able to answer whether any selected keyword is corresponding to a given trapdoor or not (called an offline keyword guessing attack). The existing semantic security definition for PEKS does not capture this vulnerability. We propose a new concept, namely… CONTINUE READING
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Public-key encryption with registered keyword search

Q. Tang, L. Chen
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