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iliailia / comparison-circuit-over-fq

Homomorphic comparison in leveled homomorphic encryption and its applications
MIT License
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Test code shows 'helib::LogicError' Decrypting with too much noise #3

Closed JinseongP closed 2 years ago

JinseongP commented 3 years ago

Hi, I'm trying to use your sample code below, ./comparison_circuit B 7 2 300 90 3 10 y But it shows 'helib::LogicError' Decrypting with too much noise in Helib 2.1.0. (also in 2.0.0) Could you check this? Thanks.

iliailia commented 3 years ago

Hi,

the parameters you're using (log q=90 for d=2, l=3 using the notation from the paper) are too small. This is why you get a noise overflow. If you switch to log q=170 (./comparison_circuit B 7 2 300 170 3 10 y), the program works just fine.