A new space switching technique in FV-style FHE allows seamless arithmetic and comparison on encrypted data with significant speedups over existing methods.
Prior approaches either require expensive scheme switching between different FHE schemes or rely on polynomial approximations that sacrifice exactness
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Efficient Arithmetic-and-Comparison Homomorphic Encryption with Space Switching
A new space switching technique in FV-style FHE allows seamless arithmetic and comparison on encrypted data with significant speedups over existing methods.