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2020. Improving the Security Strength of Iseki’s Fully Homomorphic Encryption. 2020 35th International Technical Conference on Circuits/Systems, Computers and Communications (ITC-CSCC). :299–304.
This paper proposes a method that offers much higher security for Iseki's fully homomorphic encryption (FHE), a recently proposed secure computation scheme. The key idea is re-encrypting already encrypted data. This second encryption is executed using new common keys, whereby two or more encryptions offer much stronger security.