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automorphism tests

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This commit is contained in:
Pro7ech
2025-10-20 16:31:25 +02:00
parent b91918dcaf
commit 1e2478852e
10 changed files with 154 additions and 354 deletions
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8
poulpy-core/src/automorphism/gglwe_atk.rs
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@@ -86,6 +86,7 @@ where
);
let cols_out: usize = (key.rank_out() + 1).into();
let cols_in: usize = key.rank_in().into();
let p: i64 = a.p();
let p_inv: i64 = self.galois_element_inv(p);
@@ -95,7 +96,7 @@ where
let a: &GGLWE<&[u8]> = &a.to_ref();
for row in 0..res.dnum().as_usize() {
for col in 0..cols_out {
for col in 0..cols_in {
let mut res_tmp: GLWE<&mut [u8]> = res.at_mut(row, col);
let a_ct: GLWE<&[u8]> = a.at(row, col);
@@ -133,18 +134,19 @@ where
);
let cols_out: usize = (key.rank_out() + 1).into();
let cols_in: usize = key.rank_in().into();
let p: i64 = res.p();
let p_inv: i64 = self.galois_element_inv(p);
{
let res: &mut GGLWE<&mut [u8]> = &mut res.to_mut();
for row in 0..res.dnum().as_usize() {
for col in 0..cols_out {
for col in 0..cols_in {
let mut res_tmp: GLWE<&mut [u8]> = res.at_mut(row, col);
// Reverts the automorphism X^{-k}: (-pi^{-1}_{k}(s)a + s, a) to (-sa + pi_{k}(s), a)
for i in 0..cols_out {
self.vec_znx_automorphism_inplace(p_inv, res_tmp.data_mut(), i, scratch);
self.vec_znx_automorphism_inplace(p, res_tmp.data_mut(), i, scratch);
}
// Key-switch (-sa + pi_{k}(s), a) to (-pi^{-1}_{k'}(s)a + pi_{k}(s), a)