Multi-keyword search over encrypted data with user revocation |
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Authors: | Qi-ying WU Jian-feng MA Hui LI Jun-wei ZHANG Qi JIANG Yin-bin MIAO |
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Affiliation: | 1. School of Cyber Engineering,Xidian University,Xi'an 710071,China;2. School of Telecommunication Engineering,Xidian University,Xi'an 710071,China |
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Abstract: | A mu1ti-keyword search over encrypted data was proposec1 with fi1e-1eve1 access authorization and data user revocation scheme through emp1oying ciphertext-po1icy attribute-based encryption(CP-ABE).The scheme supports fi1e-1eve1 access authorization in the mu1ti-owner mu1ti-user settings,which means that data users cou1d on1y gain the authorized fi1es encrypted by different data owners with different keys.Moreover,the scheme cou1d achieve data user revocation.Forma1 security ana1ysis shows that the proposed scheme cou1d resist the chosen keyword attack in random orac1e.Moreover,the experimenta1 study over rea1-wor1d dataset demonstrates its efficiency and feasibi1ity in practice. |
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Keywords: | searchab1e encryption fi1e-1eve1 access authorization user revocation mu1ti-keyword |
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