Subjects: Computer Science >> Integration Theory of Computer Science submitted time 2018-04-19 Cooperative journals: 《计算机应用研究》
Abstract： There are lots of drawbacks in existing attribute-based encryption with keyword search scheme, such as privacy disclosure issues and when the authorized user is offline how effectively delegate decrypt and search right to other people. In order to solve these problems, this paper proposed an attribute-based ciphertext search scheme with hidden access structures, which support proxy re-encryption function by combing attribute-based encryption with hidden access structures and proxy re-encryption technology. This scheme not only effectively solves the problems mentioned above, but also supports the update of keywords. Finally, under the random oracle model, the researchers proved the security of the scheme based on DL (D-linear) and q-BDHE (decisional q-parallel bilinear Diffie-Hellman exponent) hypothesis.
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