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Improve noise stats functionality

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This commit is contained in:
Pro7ech
2025-11-10 17:38:52 +01:00
parent e7bf8e9307
commit af45595848
15 changed files with 58 additions and 33 deletions
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15
poulpy-core/src/noise/glwe.rs
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@@ -1,6 +1,6 @@
use poulpy_hal::{
api::{ScratchOwnedAlloc, ScratchOwnedBorrow, VecZnxNormalizeInplace, VecZnxSubInplace},
layouts::{Backend, DataRef, Module, Scratch, ScratchOwned},
layouts::{Backend, DataRef, Module, Scratch, ScratchOwned, Stats},
};
use crate::{
@@ -10,7 +10,7 @@ use crate::{
};
impl<D: DataRef> GLWE<D> {
pub fn noise<M, S, P, BE: Backend>(&self, module: &M, sk_prepared: &S, pt_want: &P, scratch: &mut Scratch<BE>) -> f64
pub fn noise<M, S, P, BE: Backend>(&self, module: &M, sk_prepared: &S, pt_want: &P, scratch: &mut Scratch<BE>) -> Stats
where
M: GLWENoise<BE>,
S: GLWESecretPreparedToRef<BE>,
@@ -30,7 +30,7 @@ impl<D: DataRef> GLWE<D> {
}
pub trait GLWENoise<BE: Backend> {
fn glwe_noise<R, S, P>(&self, res: &R, sk_prepared: &S, pt_want: &P, scratch: &mut Scratch<BE>) -> f64
fn glwe_noise<R, S, P>(&self, res: &R, sk_prepared: &S, pt_want: &P, scratch: &mut Scratch<BE>) -> Stats
where
R: GLWEToRef,
S: GLWESecretPreparedToRef<BE>,
@@ -49,7 +49,7 @@ where
ScratchOwned<BE>: ScratchOwnedAlloc<BE> + ScratchOwnedBorrow<BE>,
Scratch<BE>: ScratchTakeCore<BE>,
{
fn glwe_noise<R, S, P>(&self, res: &R, sk_prepared: &S, pt_want: &P, scratch: &mut Scratch<BE>) -> f64
fn glwe_noise<R, S, P>(&self, res: &R, sk_prepared: &S, pt_want: &P, scratch: &mut Scratch<BE>) -> Stats
where
R: GLWEToRef,
S: GLWESecretPreparedToRef<BE>,
@@ -63,7 +63,7 @@ where
self.glwe_decrypt(res, &mut pt_have, sk_prepared, scratch);
self.vec_znx_sub_inplace(&mut pt_have.data, 0, &pt_want.data, 0);
self.vec_znx_normalize_inplace(res_ref.base2k().into(), &mut pt_have.data, 0, scratch);
pt_have.data.std(res_ref.base2k().into(), 0).log2()
pt_have.data.stats(res_ref.base2k().into(), 0)
}
fn glwe_assert_noise<R, S, P>(&self, res: &R, sk_prepared: &S, pt_want: &P, max_noise: f64)
@@ -74,7 +74,10 @@ where
{
let res: &GLWE<&[u8]> = &res.to_ref();
let mut scratch: ScratchOwned<BE> = ScratchOwned::alloc(self.glwe_decrypt_tmp_bytes(res));
let noise_have: f64 = self.glwe_noise(res, sk_prepared, pt_want, scratch.borrow());
let noise_have: f64 = self
.glwe_noise(res, sk_prepared, pt_want, scratch.borrow())
.std()
.log2();
assert!(noise_have <= max_noise, "{noise_have} {max_noise}");
}
}