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wip on BR + added enc/dec for LWE

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Jean-Philippe Bossuat
2025-06-13 20:45:24 +02:00
parent e8cfb5e2ab
commit 829b8be610
43 changed files with 745 additions and 688 deletions
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21
core/src/lwe/decryption.rs Normal file
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use backend::{alloc_aligned, ZnxView, ZnxViewMut};
use crate::{lwe::{LWEPlaintext}, Infos, LWECiphertext, LWESecret, SetMetaData};
impl<DataSelf> LWECiphertext<DataSelf> where DataSelf: AsRef<[u8]>{
pub fn decrypt<DataPt, DataSk>(&self, pt: &mut LWEPlaintext<DataPt>, sk: &LWESecret<DataSk>) where DataPt: AsRef<[u8]> + AsMut<[u8]>, DataSk: AsRef<[u8]>{
#[cfg(debug_assertions)]{
assert_eq!(self.n(), sk.n());
}
(0..pt.size().min(self.size())).for_each(|i|{
pt.data.at_mut(0, i)[0] = self.data.at(0, i)[0] + self.data.at(0, i)[1..].iter().zip(sk.data.at(0, 0)).map(|(x, y)| x * y).sum::<i64>();
});
let mut tmp_bytes: Vec<u8> = alloc_aligned(size_of::<i64>());
pt.data.normalize(self.basek(), 0, &mut tmp_bytes);
pt.set_basek(self.basek());
pt.set_k(self.k().min(pt.size() * self.basek()));
}
}