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Oblivious data processing has been an on and off topic for the last decade orso. It provides great opportunities for secure data management and processing,especially in the cloud. At the same time, modern computing resources seem tobe affordable enough to allow for practical use of homomorphic cryptography.Yet, the availability of products that offer practical homomorphic dataprocessing is extremely scarce. As part of a project aimed at developing apractical homomorphic data management platform, we have conducted an extensivestudy of homomorphic cryptosystems' performance, the results of which arepresented in this work. For this work we chose the following fivecryptosystems: fully homomorphic HElib and SEAL, somewhat fully homomorphicPyAono, and partially homomorphic Paillier and ElGamal. In the discussion ofthe aggregated results, we suggest that partially homomorphic cryptosystemscould be used today in certain practical applications, whereas time has not yetcome for the fully homomorphic ones.

Comprehensive Performance Analysis of Homomorphic Cryptosystems for Practical Data Processing