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Add cross-basek normalization (#90)

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* added cross_basek_normalization

* updated method signatures to take layouts

* fixed cross-base normalization

fix #91
fix #93
This commit is contained in:
Jean-Philippe Bossuat
2025-09-30 14:40:10 +02:00
committed by GitHub
parent 4da790ea6a
commit 37e13b965c
216 changed files with 12481 additions and 7745 deletions
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26
poulpy-core/src/noise/glwe_ct.rs
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@@ -2,17 +2,13 @@ use poulpy_hal::{
api::{
ScratchOwnedAlloc, ScratchOwnedBorrow, SvpApplyDftToDftInplace, VecZnxBigAddInplace, VecZnxBigAddSmallInplace,
VecZnxBigAllocBytes, VecZnxBigNormalize, VecZnxDftAllocBytes, VecZnxDftApply, VecZnxIdftApplyConsume,
VecZnxNormalizeInplace, VecZnxNormalizeTmpBytes, VecZnxSubABInplace,
VecZnxNormalizeInplace, VecZnxNormalizeTmpBytes, VecZnxSubInplace,
},
layouts::{Backend, DataRef, Module, ScratchOwned},
oep::{ScratchOwnedAllocImpl, ScratchOwnedBorrowImpl, TakeVecZnxBigImpl, TakeVecZnxDftImpl},
};
use crate::{
layouts::GLWEPlaintext,
layouts::prepared::GLWESecretPrepared,
layouts::{GLWECiphertext, Infos},
};
use crate::layouts::{GLWECiphertext, GLWEPlaintext, LWEInfos, prepared::GLWESecretPrepared};
impl<D: DataRef> GLWECiphertext<D> {
pub fn assert_noise<B, DataSk, DataPt>(
@@ -33,24 +29,20 @@ impl<D: DataRef> GLWECiphertext<D> {
+ VecZnxBigAddSmallInplace<B>
+ VecZnxBigNormalize<B>
+ VecZnxNormalizeTmpBytes
+ VecZnxSubABInplace
+ VecZnxSubInplace
+ VecZnxNormalizeInplace<B>,
B: Backend + TakeVecZnxDftImpl<B> + TakeVecZnxBigImpl<B> + ScratchOwnedAllocImpl<B> + ScratchOwnedBorrowImpl<B>,
{
let mut pt_have: GLWEPlaintext<Vec<u8>> = GLWEPlaintext::alloc(self.n(), self.basek(), self.k());
let mut pt_have: GLWEPlaintext<Vec<u8>> = GLWEPlaintext::alloc(self);
let mut scratch: ScratchOwned<B> = ScratchOwned::alloc(GLWECiphertext::decrypt_scratch_space(
module,
self.basek(),
self.k(),
));
let mut scratch: ScratchOwned<B> = ScratchOwned::alloc(GLWECiphertext::decrypt_scratch_space(module, self));
self.decrypt(module, &mut pt_have, sk_prepared, scratch.borrow());
module.vec_znx_sub_ab_inplace(&mut pt_have.data, 0, &pt_want.data, 0);
module.vec_znx_normalize_inplace(self.basek(), &mut pt_have.data, 0, scratch.borrow());
module.vec_znx_sub_inplace(&mut pt_have.data, 0, &pt_want.data, 0);
module.vec_znx_normalize_inplace(self.base2k().into(), &mut pt_have.data, 0, scratch.borrow());
let noise_have: f64 = pt_have.data.std(self.basek(), 0).log2();
assert!(noise_have <= max_noise, "{} {}", noise_have, max_noise);
let noise_have: f64 = pt_have.data.std(self.base2k().into(), 0).log2();
assert!(noise_have <= max_noise, "{noise_have} {max_noise}");
}
}