Attribute-based encryption supporting arbitrary conjunctive key word search

Abstract

A new searchable encryption scheme was proposed in prime order bilinear groups based on the attribute-based encryption and polynomial equation.The scheme,in which each conjunctive-keyword ciphertext can be searched by a number of users,may significantly reduce the overhead of network and sending nodes' computation in the application of fine-grained access control.Meanwhile,the scheme facilitates the flexibility of conjunctive search by supporting arbitrary conjunctive search of the keywords.At last,the performance was analyzed and compared with some recent conjunctive search schemes.

Keywords

• searchable encryption;attribute-based encryption;conjunctive keyword;polynomial equation