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Although ciphertext-policy attribute-based encryption (CP-ABE) is promising for realizing fine-grained attribute-based data sharing, attribute privacy protection issues remain to be solved. In this paper, we propose an anonymous CP-ABE scheme (ANON-CP-ABE) and prove its security under the Decisional Modified Bilinear Diffie-Hellman assumption. In the proposed scheme, the sensitive attribute values...
Public key encryption with keyword search applies only to the certain circumstances that keyword ciphertext can only be retrieved by a specific user and only supports single-keyword matching. In the existing searchable encryption schemes, either the communication mode is one-to-one, or only single-keyword search is supported. This paper proposes a searchable encryption that is based on attributes...
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