Cryptology ePrint Archive: Report 2006/108

Efficient Public Key Encryption with Keyword Search Schemes from Pairings

Chunxiang Gu and Yuefei Zhu and Yajuan Zhang

Abstract: Public key encryption with keyword search (PEKS) enables user Alice to send a secret key $T_W$ to a server that will enable the server to locate all encrypted messages containing the keyword $W$, but learn nothing else. In this paper, we propose a new PKES scheme based on pairings. There is no pairing operation involved in the encryption procedure. Then, we provide further discussion on removing secure channel from PKES, and present an efficient secure channel free PKES scheme. Our two new schemes can be proved secure in the random oracle model, under the appropriate computational assumptions.

Category / Keywords: public-key cryptography /

Date: received 14 Mar 2006

Contact author: gcxiang5209 at Yahoo com cn

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Version: 20060322:221144 (All versions of this report)

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