Parallel fully-homomorphic encryption and decryption methods supporting floating point arithmetic
A fully homomorphic encryption, floating-point operation technology, applied in the field of information security, can solve the problem of not supporting floating-point data homomorphic operation, unable to meet the needs of practical applications, etc.
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[0063] The implementation of the technical solution is described in further detail below:
[0064] Aiming at the security problem of privacy protection and calculation of private data in the cloud computing environment, the present invention proposes a parallel fully homomorphic floating-point number encryption method suitable for the cloud computing environment. The idea is: the owner of the data file will Encrypted files are segmented first for parallel computing frameworks, such as Spark clusters, to perform parallel encryption. Then encrypt the plaintext fragments in parallel to protect the privacy of user data in the cloud computing environment and provide ciphertext calculation functions.
[0065] The invention uses a simplified algebraic relationship to perform homomorphic encryption on data, and at the same time, in order to enhance its security, it uses a random mapping relationship to make the cracking difficulty exceed the linear time complexity. In order to furthe...
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