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Fix compressed encryptions & add GGSW compressed encryption (#67)

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* Added decompress test

* updated encryption sampling & fixed bug in glwe -> lwe test

* Added GGSW compressed encryption
This commit is contained in:
Jean-Philippe Bossuat
2025-08-13 09:45:44 +02:00
committed by GitHub
parent 9aa4b1f1e2
commit 068470783e
13 changed files with 345 additions and 68 deletions
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17
core/src/glwe/layout.rs
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@@ -6,7 +6,7 @@ use backend::hal::{
};
use sampling::source::Source;
use crate::{GLWEOps, Infos, SetMetaData};
use crate::{Decompress, GLWEOps, Infos, SetMetaData};
#[derive(PartialEq, Eq, Clone)]
pub struct GLWECiphertext<D: Data> {
@@ -266,10 +266,9 @@ impl<D: DataRef> WriterTo for GLWECiphertextCompressed<D> {
}
}
impl<D: DataMut> GLWECiphertext<D> {
pub fn decompress<DataOther, B: Backend>(&mut self, module: &Module<B>, other: &GLWECiphertextCompressed<DataOther>)
impl<D: DataMut, B: Backend, DR: DataRef> Decompress<B, GLWECiphertextCompressed<DR>> for GLWECiphertext<D> {
fn decompress(&mut self, module: &Module<B>, other: &GLWECiphertextCompressed<DR>)
where
DataOther: DataRef,
Module<B>: VecZnxFillUniform + VecZnxCopy,
{
#[cfg(debug_assertions)]
@@ -299,7 +298,9 @@ impl<D: DataMut> GLWECiphertext<D> {
self.decompress_internal(module, other, &mut source);
}
}
}
impl<D: DataMut> GLWECiphertext<D> {
pub(crate) fn decompress_internal<DataOther, B: Backend>(
&mut self,
module: &Module<B>,
@@ -309,13 +310,19 @@ impl<D: DataMut> GLWECiphertext<D> {
DataOther: DataRef,
Module<B>: VecZnxFillUniform + VecZnxCopy,
{
#[cfg(debug_assertions)]
{
assert_eq!(self.rank(), other.rank())
}
let k: usize = other.k;
let basek: usize = other.basek;
let cols: usize = other.cols();
let cols: usize = other.rank() + 1;
module.vec_znx_copy(&mut self.data, 0, &other.data, 0);
(1..cols).for_each(|i| {
module.vec_znx_fill_uniform(basek, &mut self.data, i, k, source);
});
self.basek = basek;
self.k = k;
}