Cloud storage ciphertext retrieval system based on homomorphic encryption on integer

Cloud storage ciphertext retrieval system based on homomorphic encryption on integer

Ocean Zhang Xiejiao

Based on the analysis and comparison of the existing homomorphic encryption algorithms, this paper chooses a homomorphic encryption algorithm which is suitable for this system, and uses the Homomorphic encryption algorithm to design a set of retrieval algorithms, which effectively completes the range retrieval. Using XML to build structured index files, the attribute value of the element is the ciphertext of the index word, only the element attribute value of the index file is retrieved, and the structure of the XML is convenient for the implementation of the retrieval, which guarantees the security of the original file and retrieves the data that the user wants quickly and efficiently. In view of the symmetric encryption algorithm used in this paper, the RSA encryption algorithm is introduced as the session key, and the two-level key management strategy is used to guarantee the security of the retrieval process. In order to ensure the security of the system, the identity authentication technology of MD5 combined with salt value is used to authenticate the user, which ensures the users of the login retrieval system are lawful. Finally, on the basis of research on the above technology, a cloud storage secret retrieval system based on the same state encryption is designed and implemented, which guarantees the security of the ocean data on the cloud platform and completes the retrieval task well.

Cloud storage ciphertext retrieval system based on homomorphic encryption on integer