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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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43
poulpy-core/src/encryption/gglwe_atk.rs
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@@ -3,7 +3,7 @@ use poulpy_hal::{
ScratchAvailable, SvpApplyDftToDftInplace, SvpPPolAllocBytes, SvpPrepare, TakeScalarZnx, TakeVecZnx, TakeVecZnxDft,
VecZnxAddInplace, VecZnxAddNormal, VecZnxAddScalarInplace, VecZnxAutomorphism, VecZnxBigNormalize, VecZnxDftAllocBytes,
VecZnxDftApply, VecZnxFillUniform, VecZnxIdftApplyConsume, VecZnxNormalize, VecZnxNormalizeInplace,
VecZnxNormalizeTmpBytes, VecZnxSub, VecZnxSubABInplace, VecZnxSwitchRing,
VecZnxNormalizeTmpBytes, VecZnxSub, VecZnxSubInplace, VecZnxSwitchRing,
},
layouts::{Backend, DataMut, DataRef, Module, Scratch},
source::Source,
@@ -11,19 +11,33 @@ use poulpy_hal::{
use crate::{
TakeGLWESecret, TakeGLWESecretPrepared,
layouts::{GGLWEAutomorphismKey, GGLWESwitchingKey, GLWESecret},
layouts::{GGLWEAutomorphismKey, GGLWELayoutInfos, GGLWESwitchingKey, GLWEInfos, GLWESecret, LWEInfos},
};
impl GGLWEAutomorphismKey<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: GGLWELayoutInfos,
Module<B>: SvpPPolAllocBytes + VecZnxNormalizeTmpBytes + VecZnxDftAllocBytes + VecZnxNormalizeTmpBytes,
{
GGLWESwitchingKey::encrypt_sk_scratch_space(module, basek, k, rank, rank) + GLWESecret::bytes_of(module.n(), rank)
assert_eq!(
infos.rank_in(),
infos.rank_out(),
"rank_in != rank_out is not supported for GGLWEAutomorphismKey"
);
GGLWESwitchingKey::encrypt_sk_scratch_space(module, infos) + GLWESecret::alloc_bytes(&infos.glwe_layout())
}
pub fn encrypt_pk_scratch_space<B: Backend>(module: &Module<B>, _basek: usize, _k: usize, _rank: usize) -> usize {
GGLWESwitchingKey::encrypt_pk_scratch_space(module, _basek, _k, _rank, _rank)
pub fn encrypt_pk_scratch_space<B: Backend, A>(module: &Module<B>, _infos: &A) -> usize
where
A: GGLWELayoutInfos,
{
assert_eq!(
_infos.rank_in(),
_infos.rank_out(),
"rank_in != rank_out is not supported for GGLWEAutomorphismKey"
);
GGLWESwitchingKey::encrypt_pk_scratch_space(module, _infos)
}
}
@@ -46,7 +60,7 @@ impl<DataSelf: DataMut> GGLWEAutomorphismKey<DataSelf> {
+ VecZnxIdftApplyConsume<B>
+ VecZnxNormalizeTmpBytes
+ VecZnxFillUniform
+ VecZnxSubABInplace
+ VecZnxSubInplace
+ VecZnxAddInplace
+ VecZnxNormalizeInplace<B>
+ VecZnxAddNormal
@@ -60,26 +74,23 @@ impl<DataSelf: DataMut> GGLWEAutomorphismKey<DataSelf> {
{
#[cfg(debug_assertions)]
{
use crate::layouts::Infos;
use crate::layouts::{GLWEInfos, LWEInfos};
assert_eq!(self.n(), sk.n());
assert_eq!(self.rank_out(), self.rank_in());
assert_eq!(sk.rank(), self.rank());
assert_eq!(sk.rank(), self.rank_out());
assert!(
scratch.available()
>= GGLWEAutomorphismKey::encrypt_sk_scratch_space(module, self.basek(), self.k(), self.rank()),
"scratch.available(): {} < AutomorphismKey::encrypt_sk_scratch_space(module, self.rank()={}, self.size()={}): {}",
scratch.available() >= GGLWEAutomorphismKey::encrypt_sk_scratch_space(module, self),
"scratch.available(): {} < AutomorphismKey::encrypt_sk_scratch_space: {:?}",
scratch.available(),
self.rank(),
self.size(),
GGLWEAutomorphismKey::encrypt_sk_scratch_space(module, self.basek(), self.k(), self.rank())
GGLWEAutomorphismKey::encrypt_sk_scratch_space(module, self)
)
}
let (mut sk_out, scratch_1) = scratch.take_glwe_secret(sk.n(), sk.rank());
{
(0..self.rank()).for_each(|i| {
(0..self.rank_out().into()).for_each(|i| {
module.vec_znx_automorphism(
module.galois_element_inv(p),
&mut sk_out.data.as_vec_znx_mut(),