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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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61
poulpy-core/src/encryption/compressed/gglwe_ksk.rs
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@@ -3,7 +3,7 @@ use poulpy_hal::{
ScratchAvailable, SvpApplyDftToDftInplace, SvpPPolAllocBytes, SvpPrepare, TakeScalarZnx, TakeVecZnx, TakeVecZnxDft,
VecZnxAddInplace, VecZnxAddNormal, VecZnxAddScalarInplace, VecZnxBigNormalize, VecZnxDftAllocBytes, VecZnxDftApply,
VecZnxFillUniform, VecZnxIdftApplyConsume, VecZnxNormalize, VecZnxNormalizeInplace, VecZnxNormalizeTmpBytes, VecZnxSub,
VecZnxSubABInplace, VecZnxSwitchRing,
VecZnxSubInplace, VecZnxSwitchRing,
},
layouts::{Backend, DataMut, DataRef, Module, ScalarZnx, Scratch},
source::Source,
@@ -11,23 +11,21 @@ use poulpy_hal::{
use crate::{
TakeGLWESecretPrepared,
layouts::{GGLWECiphertext, GLWESecret, compressed::GGLWESwitchingKeyCompressed, prepared::GLWESecretPrepared},
layouts::{
Degree, GGLWECiphertext, GGLWELayoutInfos, GLWEInfos, GLWESecret, LWEInfos, compressed::GGLWESwitchingKeyCompressed,
prepared::GLWESecretPrepared,
},
};
impl GGLWESwitchingKeyCompressed<Vec<u8>> {
pub fn encrypt_sk_scratch_space<B: Backend>(
module: &Module<B>,
basek: usize,
k: usize,
rank_in: usize,
rank_out: usize,
) -> usize
pub fn encrypt_sk_scratch_space<B: Backend, A>(module: &Module<B>, infos: &A) -> usize
where
A: GGLWELayoutInfos,
Module<B>: VecZnxNormalizeTmpBytes + VecZnxDftAllocBytes + VecZnxNormalizeTmpBytes + SvpPPolAllocBytes,
{
(GGLWECiphertext::encrypt_sk_scratch_space(module, basek, k) | ScalarZnx::alloc_bytes(module.n(), 1))
+ ScalarZnx::alloc_bytes(module.n(), rank_in)
+ GLWESecretPrepared::bytes_of(module, rank_out)
(GGLWECiphertext::encrypt_sk_scratch_space(module, infos) | ScalarZnx::alloc_bytes(module.n(), 1))
+ ScalarZnx::alloc_bytes(module.n(), infos.rank_in().into())
+ GLWESecretPrepared::alloc_bytes_with(module, infos.rank_out())
}
}
@@ -52,7 +50,7 @@ impl<DataSelf: DataMut> GGLWESwitchingKeyCompressed<DataSelf> {
+ VecZnxIdftApplyConsume<B>
+ VecZnxNormalizeTmpBytes
+ VecZnxFillUniform
+ VecZnxSubABInplace
+ VecZnxSubInplace
+ VecZnxAddInplace
+ VecZnxNormalizeInplace<B>
+ VecZnxAddNormal
@@ -63,35 +61,22 @@ impl<DataSelf: DataMut> GGLWESwitchingKeyCompressed<DataSelf> {
{
#[cfg(debug_assertions)]
{
use crate::layouts::{GGLWESwitchingKey, Infos};
use crate::layouts::GGLWESwitchingKey;
assert!(sk_in.n() <= module.n());
assert!(sk_out.n() <= module.n());
assert!(sk_in.n().0 <= module.n() as u32);
assert!(sk_out.n().0 <= module.n() as u32);
assert!(
scratch.available()
>= GGLWESwitchingKey::encrypt_sk_scratch_space(
module,
self.basek(),
self.k(),
self.rank_in(),
self.rank_out()
),
scratch.available() >= GGLWESwitchingKey::encrypt_sk_scratch_space(module, self),
"scratch.available()={} < GLWESwitchingKey::encrypt_sk_scratch_space={}",
scratch.available(),
GGLWESwitchingKey::encrypt_sk_scratch_space(
module,
self.basek(),
self.k(),
self.rank_in(),
self.rank_out()
)
GGLWESwitchingKey::encrypt_sk_scratch_space(module, self)
)
}
let n: usize = sk_in.n().max(sk_out.n());
let n: usize = sk_in.n().max(sk_out.n()).into();
let (mut sk_in_tmp, scratch_1) = scratch.take_scalar_znx(n, sk_in.rank());
(0..sk_in.rank()).for_each(|i| {
let (mut sk_in_tmp, scratch_1) = scratch.take_scalar_znx(n, sk_in.rank().into());
(0..sk_in.rank().into()).for_each(|i| {
module.vec_znx_switch_ring(
&mut sk_in_tmp.as_vec_znx_mut(),
i,
@@ -100,10 +85,10 @@ impl<DataSelf: DataMut> GGLWESwitchingKeyCompressed<DataSelf> {
);
});
let (mut sk_out_tmp, scratch_2) = scratch_1.take_glwe_secret_prepared(n, sk_out.rank());
let (mut sk_out_tmp, scratch_2) = scratch_1.take_glwe_secret_prepared(Degree(n as u32), sk_out.rank());
{
let (mut tmp, _) = scratch_2.take_scalar_znx(n, 1);
(0..sk_out.rank()).for_each(|i| {
(0..sk_out.rank().into()).for_each(|i| {
module.vec_znx_switch_ring(&mut tmp.as_vec_znx_mut(), 0, &sk_out.data.as_vec_znx(), i);
module.svp_prepare(&mut sk_out_tmp.data, i, &tmp, 0);
});
@@ -117,7 +102,7 @@ impl<DataSelf: DataMut> GGLWESwitchingKeyCompressed<DataSelf> {
source_xe,
scratch_2,
);
self.sk_in_n = sk_in.n();
self.sk_out_n = sk_out.n();
self.sk_in_n = sk_in.n().into();
self.sk_out_n = sk_out.n().into();
}
}