Cloud storage-oriented multi-keyword ciphertext retrieval method and system
A keyword, cloud storage technology, applied in the field of information security, can solve the problems of destroying the order relationship of data, difficult keys, and low efficiency of ciphertext query.
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[0049] The present invention will be described in further detail below in conjunction with the accompanying drawings and specific embodiments, but the scope of the present invention is not limited in any way.
[0050] In an embodiment of the present invention, it is a multi-keyword ciphertext retrieval system oriented to cloud storage, which includes: a cloud storage server, an encryption and ciphertext retrieval cloud server, and several clients, and the clients pass The network is connected to the encryption and ciphertext retrieval cloud server and the cloud storage server; it can be connected through traditional Internet and mobile Internet, and can also be connected through local area network and wide area network;
[0051] The client includes user management components, encryption and decryption components, key management components, client metadata management components, client ciphertext index creation components, client plain ciphertext query components, file preproces...
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