Citation: | Yulei ZHANG, Xiangzhen LIU, Xiaoli LANG, Yongjie ZHANG, Wenjuan CHEN, Caifen WANG. Multi-server Key Aggregation Searchable Encryption Scheme in Cloud Environment[J]. Journal of Electronics & Information Technology, 2019, 41(3): 674-679. doi: 10.11999/JEIT180418 |
Key aggregation searchable encryption can not only retrieve ciphertext through keywords, but also can reduce user key management costs and security risks. This paper analyzes a verifiable key aggregation searchable encryption scheme, noting that the scheme does not satisfy keyword guessing attacks, and that unauthorized internal users can guess the private keys of other users. In order to improve the security of the original scheme, a multi-server key aggregation searchable encryption scheme is proposed in the cloud environment. The new scheme not only improves the security of the original solution, but also adds multi-service features, and improves the storage and search efficiency. Therefore, it is more suitable for a one-to-many user environment.
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