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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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34
poulpy-core/src/encryption/compressed/ggsw_ct.rs
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@@ -2,7 +2,7 @@ use poulpy_hal::{
api::{
ScratchAvailable, SvpApplyDftToDftInplace, TakeVecZnx, TakeVecZnxDft, VecZnxAddInplace, VecZnxAddNormal,
VecZnxAddScalarInplace, VecZnxBigNormalize, VecZnxDftAllocBytes, VecZnxDftApply, VecZnxFillUniform,
VecZnxIdftApplyConsume, VecZnxNormalize, VecZnxNormalizeInplace, VecZnxNormalizeTmpBytes, VecZnxSub, VecZnxSubABInplace,
VecZnxIdftApplyConsume, VecZnxNormalize, VecZnxNormalizeInplace, VecZnxNormalizeTmpBytes, VecZnxSub, VecZnxSubInplace,
},
layouts::{Backend, DataMut, DataRef, Module, ScalarZnx, Scratch, ZnxZero},
source::Source,
@@ -11,15 +11,18 @@ use poulpy_hal::{
use crate::{
TakeGLWEPt,
encryption::{SIGMA, glwe_encrypt_sk_internal},
layouts::{GGSWCiphertext, Infos, compressed::GGSWCiphertextCompressed, prepared::GLWESecretPrepared},
layouts::{
GGSWCiphertext, GGSWInfos, GLWEInfos, LWEInfos, compressed::GGSWCiphertextCompressed, prepared::GLWESecretPrepared,
},
};
impl GGSWCiphertextCompressed<Vec<u8>> {
pub fn encrypt_sk_scratch_space<B: Backend>(module: &Module<B>, basek: usize, k: usize, rank: usize) -> usize
pub fn encrypt_sk_scratch_space<B: Backend, A>(module: &Module<B>, infos: &A) -> usize
where
A: GGSWInfos,
Module<B>: VecZnxNormalizeTmpBytes + VecZnxDftAllocBytes,
{
GGSWCiphertext::encrypt_sk_scratch_space(module, basek, k, rank)
GGSWCiphertext::encrypt_sk_scratch_space(module, infos)
}
}
@@ -42,7 +45,7 @@ impl<DataSelf: DataMut> GGSWCiphertextCompressed<DataSelf> {
+ VecZnxIdftApplyConsume<B>
+ VecZnxNormalizeTmpBytes
+ VecZnxFillUniform
+ VecZnxSubABInplace
+ VecZnxSubInplace
+ VecZnxAddInplace
+ VecZnxNormalizeInplace<B>
+ VecZnxAddNormal
@@ -56,27 +59,26 @@ impl<DataSelf: DataMut> GGSWCiphertextCompressed<DataSelf> {
assert_eq!(self.rank(), sk.rank());
assert_eq!(self.n(), sk.n());
assert_eq!(pt.n(), sk.n());
assert_eq!(pt.n() as u32, sk.n());
}
let basek: usize = self.basek();
let k: usize = self.k();
let rank: usize = self.rank();
let base2k: usize = self.base2k().into();
let rank: usize = self.rank().into();
let cols: usize = rank + 1;
let digits: usize = self.digits();
let digits: usize = self.digits().into();
let (mut tmp_pt, scratch_1) = scratch.take_glwe_pt(self.n(), basek, k);
let (mut tmp_pt, scratch_1) = scratch.take_glwe_pt(&self.glwe_layout());
let mut source = Source::new(seed_xa);
self.seed = vec![[0u8; 32]; self.rows() * cols];
self.seed = vec![[0u8; 32]; self.rows().0 as usize * cols];
(0..self.rows()).for_each(|row_i| {
(0..self.rows().into()).for_each(|row_i| {
tmp_pt.data.zero();
// Adds the scalar_znx_pt to the i-th limb of the vec_znx_pt
module.vec_znx_add_scalar_inplace(&mut tmp_pt.data, 0, (digits - 1) + row_i * digits, pt, 0);
module.vec_znx_normalize_inplace(basek, &mut tmp_pt.data, 0, scratch_1);
module.vec_znx_normalize_inplace(base2k, &mut tmp_pt.data, 0, scratch_1);
(0..rank + 1).for_each(|col_j| {
// rlwe encrypt of vec_znx_pt into vec_znx_ct
@@ -87,8 +89,8 @@ impl<DataSelf: DataMut> GGSWCiphertextCompressed<DataSelf> {
glwe_encrypt_sk_internal(
module,
self.basek(),
self.k(),
self.base2k().into(),
self.k().into(),
&mut self.at_mut(row_i, col_j).data,
cols,
true,