mirror of
https://github.com/arnaucube/poulpy.git
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working on adding rank to glwe (all test passing)
This commit is contained in:
Jean-Philippe Bossuat
@@ -1,170 +1,63 @@
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use base2k::{
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Backend, FFT64, MatZnxDft, MatZnxDftAlloc, MatZnxDftOps, MatZnxDftScratch, MatZnxDftToMut, MatZnxDftToRef, Module, ScalarZnx,
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ScalarZnxDft, ScalarZnxDftToRef, ScalarZnxToRef, Scratch, VecZnx, VecZnxAlloc, VecZnxBig, VecZnxBigOps, VecZnxBigScratch,
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VecZnxDft, VecZnxDftAlloc, VecZnxDftOps, VecZnxDftToMut, VecZnxDftToRef, VecZnxOps, VecZnxToMut, VecZnxToRef, ZnxInfos,
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ZnxZero,
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Backend, FFT64, MatZnxDft, MatZnxDftOps, MatZnxDftToMut, MatZnxDftToRef, Module, ScalarZnx, ScalarZnxDft, ScalarZnxDftToRef,
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ScalarZnxToRef, Scratch, VecZnxDft, VecZnxDftToMut, VecZnxDftToRef,
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};
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use sampling::source::Source;
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use crate::{
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elem::{GetRow, Infos, SetRow},
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encryption::EncryptSkScratchSpace,
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external_product::{
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ExternalProduct, ExternalProductInplace, ExternalProductInplaceScratchSpace, ExternalProductScratchSpace,
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},
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ggsw::GGSWCiphertext,
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glwe::{GLWECiphertext, GLWECiphertextFourier, GLWEPlaintext},
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gglwe_ciphertext::GGLWECiphertext,
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ggsw_ciphertext::GGSWCiphertext,
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glwe_ciphertext_fourier::GLWECiphertextFourier,
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keys::SecretKeyFourier,
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keyswitch::{KeySwitch, KeySwitchInplace, KeySwitchInplaceScratchSpace, KeySwitchScratchSpace},
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utils::derive_size,
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vec_glwe_product::{VecGLWEProduct, VecGLWEProductScratchSpace},
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};
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pub struct GLWEKeySwitchKey<C, B: Backend> {
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pub data: MatZnxDft<C, B>,
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pub log_base2k: usize,
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pub log_k: usize,
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}
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pub struct GLWESwitchingKey<Data, B: Backend>(pub(crate) GGLWECiphertext<Data, B>);
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impl<B: Backend> GLWEKeySwitchKey<Vec<u8>, B> {
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pub fn new(module: &Module<B>, log_base2k: usize, log_k: usize, rows: usize) -> Self {
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Self {
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data: module.new_mat_znx_dft(rows, 1, 2, derive_size(log_base2k, log_k)),
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log_base2k: log_base2k,
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log_k: log_k,
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}
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impl GLWESwitchingKey<Vec<u8>, FFT64> {
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pub fn new(module: &Module<FFT64>, base2k: usize, k: usize, rows: usize, rank_in: usize, rank_out: usize) -> Self {
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GLWESwitchingKey(GGLWECiphertext::new(
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module, base2k, k, rows, rank_in, rank_out,
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))
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}
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}
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impl<T, B: Backend> Infos for GLWEKeySwitchKey<T, B> {
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impl<T, B: Backend> Infos for GLWESwitchingKey<T, B> {
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type Inner = MatZnxDft<T, B>;
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fn inner(&self) -> &Self::Inner {
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&self.data
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&self.0.inner()
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}
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fn basek(&self) -> usize {
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self.log_base2k
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self.0.basek()
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}
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fn k(&self) -> usize {
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self.log_k
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self.0.k()
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}
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}
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impl<C, B: Backend> MatZnxDftToMut<B> for GLWEKeySwitchKey<C, B>
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impl<DataSelf, B: Backend> MatZnxDftToMut<B> for GLWESwitchingKey<DataSelf, B>
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where
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MatZnxDft<C, B>: MatZnxDftToMut<B>,
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MatZnxDft<DataSelf, B>: MatZnxDftToMut<B>,
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{
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fn to_mut(&mut self) -> MatZnxDft<&mut [u8], B> {
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self.data.to_mut()
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self.0.data.to_mut()
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}
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}
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impl<C, B: Backend> MatZnxDftToRef<B> for GLWEKeySwitchKey<C, B>
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impl<DataSelf, B: Backend> MatZnxDftToRef<B> for GLWESwitchingKey<DataSelf, B>
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where
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MatZnxDft<C, B>: MatZnxDftToRef<B>,
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MatZnxDft<DataSelf, B>: MatZnxDftToRef<B>,
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{
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fn to_ref(&self) -> MatZnxDft<&[u8], B> {
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self.data.to_ref()
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self.0.data.to_ref()
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}
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}
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impl GLWEKeySwitchKey<Vec<u8>, FFT64> {
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pub fn encrypt_sk_scratch_space(module: &Module<FFT64>, size: usize) -> usize {
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GLWECiphertext::encrypt_sk_scratch_space(module, size)
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+ module.bytes_of_vec_znx(2, size)
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+ module.bytes_of_vec_znx(1, size)
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+ module.bytes_of_vec_znx_dft(2, size)
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}
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}
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pub fn encrypt_glwe_key_switch_key_sk<C, P, S>(
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module: &Module<FFT64>,
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ct: &mut GLWEKeySwitchKey<C, FFT64>,
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pt: &ScalarZnx<P>,
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sk_dft: &SecretKeyFourier<S, FFT64>,
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source_xa: &mut Source,
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source_xe: &mut Source,
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sigma: f64,
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bound: f64,
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scratch: &mut Scratch,
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) where
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MatZnxDft<C, FFT64>: MatZnxDftToMut<FFT64>,
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ScalarZnx<P>: ScalarZnxToRef,
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ScalarZnxDft<S, FFT64>: ScalarZnxDftToRef<FFT64>,
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{
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let rows: usize = ct.rows();
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let size: usize = ct.size();
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let log_base2k: usize = ct.basek();
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let (tmp_znx_pt, scrach_1) = scratch.tmp_vec_znx(module, 1, size);
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let (tmp_znx_ct, scrach_2) = scrach_1.tmp_vec_znx(module, 2, size);
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let (mut vec_znx_dft_ct, scratch_3) = scrach_2.tmp_vec_znx_dft(module, 2, size);
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let mut vec_znx_pt: GLWEPlaintext<&mut [u8]> = GLWEPlaintext {
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data: tmp_znx_pt,
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log_base2k: log_base2k,
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log_k: ct.k(),
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};
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let mut vec_znx_ct: GLWECiphertext<&mut [u8]> = GLWECiphertext {
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data: tmp_znx_ct,
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log_base2k: log_base2k,
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log_k: ct.k(),
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};
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(0..rows).for_each(|row_i| {
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// Adds the scalar_znx_pt to the i-th limb of the vec_znx_pt
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module.vec_znx_add_scalar_inplace(&mut vec_znx_pt, 0, row_i, pt, 0);
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module.vec_znx_normalize_inplace(log_base2k, &mut vec_znx_pt, 0, scratch_3);
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// rlwe encrypt of vec_znx_pt into vec_znx_ct
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vec_znx_ct.encrypt_sk(
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module,
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&vec_znx_pt,
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sk_dft,
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source_xa,
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source_xe,
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sigma,
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bound,
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scratch_3,
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);
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vec_znx_pt.data.zero(); // zeroes for next iteration
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// Switch vec_znx_ct into DFT domain
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module.vec_znx_dft(&mut vec_znx_dft_ct, 0, &vec_znx_ct, 0);
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module.vec_znx_dft(&mut vec_znx_dft_ct, 1, &vec_znx_ct, 1);
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// Stores vec_znx_dft_ct into thw i-th row of the MatZnxDft
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module.vmp_prepare_row(ct, row_i, 0, &vec_znx_dft_ct);
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});
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}
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impl<C> GLWEKeySwitchKey<C, FFT64> {
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pub fn encrypt_sk<P, S>(
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&mut self,
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module: &Module<FFT64>,
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pt: &ScalarZnx<P>,
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sk_dft: &SecretKeyFourier<S, FFT64>,
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source_xa: &mut Source,
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source_xe: &mut Source,
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sigma: f64,
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bound: f64,
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scratch: &mut Scratch,
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) where
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MatZnxDft<C, FFT64>: MatZnxDftToMut<FFT64>,
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ScalarZnx<P>: ScalarZnxToRef,
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ScalarZnxDft<S, FFT64>: ScalarZnxDftToRef<FFT64>,
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{
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encrypt_glwe_key_switch_key_sk(
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module, self, pt, sk_dft, source_xa, source_xe, sigma, bound, scratch,
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)
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}
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}
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impl<C> GetRow<FFT64> for GLWEKeySwitchKey<C, FFT64>
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impl<C> GetRow<FFT64> for GLWESwitchingKey<C, FFT64>
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where
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MatZnxDft<C, FFT64>: MatZnxDftToRef<FFT64>,
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{
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@@ -180,7 +73,7 @@ where
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}
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}
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impl<C> SetRow<FFT64> for GLWEKeySwitchKey<C, FFT64>
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impl<C> SetRow<FFT64> for GLWESwitchingKey<C, FFT64>
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where
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MatZnxDft<C, FFT64>: MatZnxDftToMut<FFT64>,
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{
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@@ -196,138 +89,117 @@ where
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}
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}
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impl KeySwitchScratchSpace for GLWEKeySwitchKey<Vec<u8>, FFT64> {
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fn keyswitch_scratch_space(module: &Module<FFT64>, res_size: usize, lhs: usize, rhs: usize) -> usize {
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<GLWEKeySwitchKey<Vec<u8>, FFT64> as VecGLWEProductScratchSpace>::prod_with_vec_glwe_scratch_space(
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impl GLWESwitchingKey<Vec<u8>, FFT64> {
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pub fn encrypt_sk_scratch_space(module: &Module<FFT64>, rank: usize, size: usize) -> usize {
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GGLWECiphertext::encrypt_sk_scratch_space(module, rank, size)
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}
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pub fn encrypt_pk_scratch_space(module: &Module<FFT64>, rank: usize, pk_size: usize) -> usize {
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GGLWECiphertext::encrypt_pk_scratch_space(module, rank, pk_size)
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}
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}
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impl<DataSelf> GLWESwitchingKey<DataSelf, FFT64>
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where
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MatZnxDft<DataSelf, FFT64>: MatZnxDftToMut<FFT64> + MatZnxDftToRef<FFT64>,
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{
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pub fn encrypt_sk<DataPt, DataSk>(
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&mut self,
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module: &Module<FFT64>,
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pt: &ScalarZnx<DataPt>,
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sk_dft: &SecretKeyFourier<DataSk, FFT64>,
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source_xa: &mut Source,
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source_xe: &mut Source,
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sigma: f64,
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bound: f64,
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scratch: &mut Scratch,
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) where
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ScalarZnx<DataPt>: ScalarZnxToRef,
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ScalarZnxDft<DataSk, FFT64>: ScalarZnxDftToRef<FFT64>,
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{
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self.0.encrypt_sk(
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module, pt, sk_dft, source_xa, source_xe, sigma, bound, scratch,
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);
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}
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}
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impl GLWESwitchingKey<Vec<u8>, FFT64> {
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pub fn keyswitch_scratch_space(module: &Module<FFT64>, res_size: usize, lhs: usize, rhs: usize) -> usize {
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<GGLWECiphertext<Vec<u8>, FFT64> as VecGLWEProductScratchSpace>::prod_with_vec_glwe_scratch_space(
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module, res_size, lhs, rhs,
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)
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}
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}
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impl<DataSelf, DataLhs, DataRhs> KeySwitch<DataLhs, DataRhs> for GLWEKeySwitchKey<DataSelf, FFT64>
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where
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MatZnxDft<DataSelf, FFT64>: MatZnxDftToMut<FFT64> + MatZnxDftToRef<FFT64>,
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MatZnxDft<DataLhs, FFT64>: MatZnxDftToRef<FFT64>,
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MatZnxDft<DataRhs, FFT64>: MatZnxDftToRef<FFT64>,
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{
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type Lhs = GLWEKeySwitchKey<DataLhs, FFT64>;
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type Rhs = GLWEKeySwitchKey<DataRhs, FFT64>;
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fn keyswitch(&mut self, module: &Module<FFT64>, lhs: &Self::Lhs, rhs: &Self::Rhs, scratch: &mut Scratch) {
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rhs.prod_with_vec_glwe(module, self, lhs, scratch);
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}
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}
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impl KeySwitchInplaceScratchSpace for GLWEKeySwitchKey<Vec<u8>, FFT64> {
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fn keyswitch_inplace_scratch_space(module: &Module<FFT64>, res_size: usize, rhs: usize) -> usize {
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<GLWEKeySwitchKey<Vec<u8>, FFT64> as VecGLWEProductScratchSpace>::prod_with_vec_glwe_inplace_scratch_space(
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pub fn keyswitch_inplace_scratch_space(module: &Module<FFT64>, res_size: usize, rhs: usize) -> usize {
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<GGLWECiphertext<Vec<u8>, FFT64> as VecGLWEProductScratchSpace>::prod_with_vec_glwe_inplace_scratch_space(
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module, res_size, rhs,
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)
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}
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}
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impl<DataSelf, DataRhs> KeySwitchInplace<DataRhs> for GLWEKeySwitchKey<DataSelf, FFT64>
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where
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MatZnxDft<DataSelf, FFT64>: MatZnxDftToMut<FFT64> + MatZnxDftToRef<FFT64>,
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MatZnxDft<DataRhs, FFT64>: MatZnxDftToRef<FFT64>,
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{
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type Rhs = GLWEKeySwitchKey<DataRhs, FFT64>;
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fn keyswitch_inplace(&mut self, module: &Module<FFT64>, rhs: &Self::Rhs, scratch: &mut Scratch) {
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rhs.prod_with_vec_glwe(module, self, rhs, scratch);
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}
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}
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impl ExternalProductScratchSpace for GLWEKeySwitchKey<Vec<u8>, FFT64> {
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fn external_product_scratch_space(module: &Module<FFT64>, res_size: usize, lhs: usize, rhs: usize) -> usize {
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pub fn external_product_scratch_space(module: &Module<FFT64>, res_size: usize, lhs: usize, rhs: usize) -> usize {
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<GGSWCiphertext<Vec<u8>, FFT64> as VecGLWEProductScratchSpace>::prod_with_vec_glwe_scratch_space(
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module, res_size, lhs, rhs,
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)
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}
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}
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impl<DataSelf, DataLhs, DataRhs> ExternalProduct<DataLhs, DataRhs> for GLWEKeySwitchKey<DataSelf, FFT64>
|
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where
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MatZnxDft<DataSelf, FFT64>: MatZnxDftToMut<FFT64> + MatZnxDftToRef<FFT64>,
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MatZnxDft<DataLhs, FFT64>: MatZnxDftToRef<FFT64>,
|
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MatZnxDft<DataRhs, FFT64>: MatZnxDftToRef<FFT64>,
|
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{
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type Lhs = GLWEKeySwitchKey<DataLhs, FFT64>;
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type Rhs = GGSWCiphertext<DataRhs, FFT64>;
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fn external_product(&mut self, module: &Module<FFT64>, lhs: &Self::Lhs, rhs: &Self::Rhs, scratch: &mut Scratch) {
|
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rhs.prod_with_vec_glwe(module, self, lhs, scratch);
|
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}
|
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}
|
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|
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impl ExternalProductInplaceScratchSpace for GLWEKeySwitchKey<Vec<u8>, FFT64> {
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fn external_product_inplace_scratch_space(module: &Module<FFT64>, res_size: usize, rhs: usize) -> usize {
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pub fn external_product_inplace_scratch_space(module: &Module<FFT64>, res_size: usize, rhs: usize) -> usize {
|
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<GGSWCiphertext<Vec<u8>, FFT64> as VecGLWEProductScratchSpace>::prod_with_glwe_inplace_scratch_space(
|
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module, res_size, rhs,
|
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)
|
||||
}
|
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}
|
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|
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impl<DataSelf, DataRhs> ExternalProductInplace<DataRhs> for GLWEKeySwitchKey<DataSelf, FFT64>
|
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impl<DataSelf> GLWESwitchingKey<DataSelf, FFT64>
|
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where
|
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MatZnxDft<DataSelf, FFT64>: MatZnxDftToMut<FFT64> + MatZnxDftToRef<FFT64>,
|
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MatZnxDft<DataRhs, FFT64>: MatZnxDftToRef<FFT64>,
|
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{
|
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type Rhs = GGSWCiphertext<DataRhs, FFT64>;
|
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|
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fn external_product_inplace(&mut self, module: &Module<FFT64>, rhs: &Self::Rhs, scratch: &mut Scratch) {
|
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rhs.prod_with_vec_glwe_inplace(module, self, scratch);
|
||||
}
|
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}
|
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|
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impl VecGLWEProductScratchSpace for GLWEKeySwitchKey<Vec<u8>, FFT64> {
|
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fn prod_with_glwe_scratch_space(module: &Module<FFT64>, res_size: usize, a_size: usize, grlwe_size: usize) -> usize {
|
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module.bytes_of_vec_znx_dft(2, grlwe_size)
|
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+ (module.vec_znx_big_normalize_tmp_bytes()
|
||||
| (module.vmp_apply_tmp_bytes(res_size, a_size, a_size, 1, 2, grlwe_size)
|
||||
+ module.bytes_of_vec_znx_dft(1, a_size)))
|
||||
}
|
||||
}
|
||||
|
||||
impl<C> VecGLWEProduct for GLWEKeySwitchKey<C, FFT64>
|
||||
where
|
||||
MatZnxDft<C, FFT64>: MatZnxDftToRef<FFT64> + ZnxInfos,
|
||||
{
|
||||
fn prod_with_glwe<R, A>(
|
||||
&self,
|
||||
pub fn keyswitch<DataLhs, DataRhs>(
|
||||
&mut self,
|
||||
module: &Module<FFT64>,
|
||||
res: &mut GLWECiphertext<R>,
|
||||
a: &GLWECiphertext<A>,
|
||||
lhs: &GLWESwitchingKey<DataLhs, FFT64>,
|
||||
rhs: &GLWESwitchingKey<DataRhs, FFT64>,
|
||||
scratch: &mut base2k::Scratch,
|
||||
) where
|
||||
MatZnxDft<DataLhs, FFT64>: MatZnxDftToRef<FFT64>,
|
||||
MatZnxDft<DataRhs, FFT64>: MatZnxDftToRef<FFT64>,
|
||||
{
|
||||
rhs.0
|
||||
.prod_with_vec_glwe(module, &mut self.0, &lhs.0, scratch);
|
||||
}
|
||||
|
||||
pub fn keyswitch_inplace<DataRhs>(
|
||||
&mut self,
|
||||
module: &Module<FFT64>,
|
||||
rhs: &GLWESwitchingKey<DataRhs, FFT64>,
|
||||
scratch: &mut base2k::Scratch,
|
||||
) where
|
||||
MatZnxDft<DataRhs, FFT64>: MatZnxDftToRef<FFT64>,
|
||||
{
|
||||
rhs.0
|
||||
.prod_with_vec_glwe_inplace(module, &mut self.0, scratch);
|
||||
}
|
||||
|
||||
pub fn external_product<DataLhs, DataRhs>(
|
||||
&mut self,
|
||||
module: &Module<FFT64>,
|
||||
lhs: &GLWESwitchingKey<DataLhs, FFT64>,
|
||||
rhs: &GGSWCiphertext<DataRhs, FFT64>,
|
||||
scratch: &mut Scratch,
|
||||
) where
|
||||
MatZnxDft<C, FFT64>: MatZnxDftToRef<FFT64>,
|
||||
VecZnx<R>: VecZnxToMut,
|
||||
VecZnx<A>: VecZnxToRef,
|
||||
MatZnxDft<DataLhs, FFT64>: MatZnxDftToRef<FFT64>,
|
||||
MatZnxDft<DataRhs, FFT64>: MatZnxDftToRef<FFT64>,
|
||||
{
|
||||
let log_base2k: usize = self.basek();
|
||||
rhs.prod_with_vec_glwe(module, &mut self.0, &lhs.0, scratch);
|
||||
}
|
||||
|
||||
#[cfg(debug_assertions)]
|
||||
{
|
||||
assert_eq!(res.basek(), log_base2k);
|
||||
assert_eq!(a.basek(), log_base2k);
|
||||
assert_eq!(self.n(), module.n());
|
||||
assert_eq!(res.n(), module.n());
|
||||
assert_eq!(a.n(), module.n());
|
||||
}
|
||||
|
||||
let (mut res_dft, scratch1) = scratch.tmp_vec_znx_dft(module, 2, self.size()); // Todo optimise
|
||||
|
||||
{
|
||||
let (mut a1_dft, scratch2) = scratch1.tmp_vec_znx_dft(module, 1, a.size());
|
||||
module.vec_znx_dft(&mut a1_dft, 0, a, 1);
|
||||
module.vmp_apply(&mut res_dft, &a1_dft, self, scratch2);
|
||||
}
|
||||
|
||||
let mut res_big: VecZnxBig<&mut [u8], FFT64> = module.vec_znx_idft_consume(res_dft);
|
||||
|
||||
module.vec_znx_big_add_small_inplace(&mut res_big, 0, a, 0);
|
||||
|
||||
module.vec_znx_big_normalize(log_base2k, res, 0, &res_big, 0, scratch1);
|
||||
module.vec_znx_big_normalize(log_base2k, res, 1, &res_big, 1, scratch1);
|
||||
pub fn external_product_inplace<DataRhs>(
|
||||
&mut self,
|
||||
module: &Module<FFT64>,
|
||||
rhs: &GGSWCiphertext<DataRhs, FFT64>,
|
||||
scratch: &mut Scratch,
|
||||
) where
|
||||
MatZnxDft<DataRhs, FFT64>: MatZnxDftToRef<FFT64>,
|
||||
{
|
||||
rhs.prod_with_vec_glwe_inplace(module, &mut self.0, scratch);
|
||||
}
|
||||
}
|
||||
|
||||
Reference in New Issue
Block a user