fn encrypt_zero()

in src/lib.rs [438:458]

• 13 lines of code
• 2 McCabe index (conditional complexity)

    fn encrypt_zero(&self, pk: &FVCiphertext<T>) -> FVCiphertext<T> {
        let mut u = randutils::sample_ternary_poly_prng(self.context.clone());
        let e1 = randutils::sample_gaussian_poly(self.context.clone(), self.stdev);
        let e2 = randutils::sample_gaussian_poly(self.context.clone(), self.stdev);

        if self.context.is_ntt_enabled {
            u.forward_transform();
        }
        // c0 = au + e1
        // let mut c0 = RqPoly::new(self.context.clone());
        let mut c0 = (self.poly_multiplier)(&pk.0, &u);
        c0.add_inplace(&e1);

        // c1 = bu + e2
        // let mut c1 = RqPoly::new(self.context.clone());

        let mut c1 = (self.poly_multiplier)(&pk.1, &u);
        c1.add_inplace(&e2);

        (c0, c1)
    }