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Various improvement to memory management and API

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[module]: added enum for backend
[VecZnx, VecZnxDft, VecZnxBig, VmpPMat]: added ptr to data
[VecZnxBorrow]: removed
[VecZnxAPI]: removed
This commit is contained in:
Jean-Philippe Bossuat
2025-03-17 12:07:40 +01:00
parent 97a1559bf2
commit 46c577409e
28 changed files with 896 additions and 1064 deletions
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92
rlwe/src/encryptor.rs
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@@ -1,12 +1,12 @@
use crate::ciphertext::Ciphertext;
use crate::elem::{Elem, ElemCommon, ElemVecZnx, VecZnxCommon};
use crate::elem::{Elem, ElemCommon, ElemVecZnx};
use crate::keys::SecretKey;
use crate::parameters::Parameters;
use crate::plaintext::Plaintext;
use base2k::sampling::Sampling;
use base2k::{
Module, Scalar, SvpPPol, SvpPPolOps, VecZnx, VecZnxApi, VecZnxBig, VecZnxBigOps, VecZnxBorrow,
VecZnxDft, VecZnxDftOps, VecZnxOps, VmpPMat, VmpPMatOps,
Module, Scalar, SvpPPol, SvpPPolOps, VecZnx, VecZnxBig, VecZnxBigOps, VecZnxDft, VecZnxDftOps,
VecZnxOps, VmpPMat, VmpPMatOps,
};
use sampling::source::{Source, new_seed};
@@ -49,20 +49,17 @@ impl EncryptorSk {
self.source_xe = Source::new(seed)
}
pub fn encrypt_rlwe_sk<T>(
pub fn encrypt_rlwe_sk(
&mut self,
params: &Parameters,
ct: &mut Ciphertext<T>,
pt: Option<&Plaintext<T>>,
) where
T: VecZnxCommon<Owned = T>,
Elem<T>: ElemCommon<T>,
{
ct: &mut Ciphertext<VecZnx>,
pt: Option<&Plaintext>,
) {
assert!(
self.initialized == true,
"invalid call to [EncryptorSk.encrypt_rlwe_sk]: [EncryptorSk] has not been initialized with a [SecretKey]"
);
params.encrypt_rlwe_sk_thread_safe(
params.encrypt_rlwe_sk(
ct,
pt,
&self.sk,
@@ -72,23 +69,20 @@ impl EncryptorSk {
);
}
pub fn encrypt_rlwe_sk_thread_safe<T>(
pub fn encrypt_rlwe_sk_core(
&self,
params: &Parameters,
ct: &mut Ciphertext<T>,
pt: Option<&Plaintext<T>>,
ct: &mut Ciphertext<VecZnx>,
pt: Option<&Plaintext>,
source_xa: &mut Source,
source_xe: &mut Source,
tmp_bytes: &mut [u8],
) where
T: VecZnxCommon<Owned = T>,
Elem<T>: ElemCommon<T>,
{
) {
assert!(
self.initialized == true,
"invalid call to [EncryptorSk.encrypt_rlwe_sk_thread_safe]: [EncryptorSk] has not been initialized with a [SecretKey]"
"invalid call to [EncryptorSk.encrypt_rlwe_sk]: [EncryptorSk] has not been initialized with a [SecretKey]"
);
params.encrypt_rlwe_sk_thread_safe(ct, pt, &self.sk, source_xa, source_xe, tmp_bytes);
params.encrypt_rlwe_sk(ct, pt, &self.sk, source_xa, source_xe, tmp_bytes);
}
}
@@ -97,19 +91,16 @@ impl Parameters {
encrypt_rlwe_sk_tmp_bytes(self.module(), self.log_base2k(), log_q)
}
pub fn encrypt_rlwe_sk_thread_safe<T>(
pub fn encrypt_rlwe_sk(
&self,
ct: &mut Ciphertext<T>,
pt: Option<&Plaintext<T>>,
ct: &mut Ciphertext<VecZnx>,
pt: Option<&Plaintext>,
sk: &SvpPPol,
source_xa: &mut Source,
source_xe: &mut Source,
tmp_bytes: &mut [u8],
) where
T: VecZnxCommon<Owned = T>,
Elem<T>: ElemCommon<T>,
{
encrypt_rlwe_sk_thread_safe(
) {
encrypt_rlwe_sk(
self.module(),
&mut ct.0,
pt.map(|pt| &pt.0),
@@ -127,19 +118,16 @@ pub fn encrypt_rlwe_sk_tmp_bytes(module: &Module, log_base2k: usize, log_q: usiz
+ module.vec_znx_big_normalize_tmp_bytes()
}
pub fn encrypt_rlwe_sk_thread_safe<T>(
pub fn encrypt_rlwe_sk(
module: &Module,
ct: &mut Elem<T>,
pt: Option<&Elem<T>>,
ct: &mut Elem<VecZnx>,
pt: Option<&Elem<VecZnx>>,
sk: &SvpPPol,
source_xa: &mut Source,
source_xe: &mut Source,
sigma: f64,
tmp_bytes: &mut [u8],
) where
T: VecZnxCommon<Owned = T>,
Elem<T>: ElemCommon<T>,
{
) {
let cols: usize = ct.cols();
let log_base2k: usize = ct.log_base2k();
let log_q: usize = ct.log_q();
@@ -153,16 +141,16 @@ pub fn encrypt_rlwe_sk_thread_safe<T>(
let log_q: usize = ct.log_q();
let log_base2k: usize = ct.log_base2k();
let c1: &mut T = ct.at_mut(1);
let c1: &mut VecZnx = ct.at_mut(1);
// c1 <- Z_{2^prec}[X]/(X^{N}+1)
module.fill_uniform(log_base2k, c1, cols, source_xa);
let bytes_of_vec_znx_dft: usize = module.bytes_of_vec_znx_dft(cols);
let (tmp_bytes_vec_znx_dft, tmp_bytes_normalize) =
tmp_bytes.split_at_mut(module.bytes_of_vec_znx_dft(cols));
// Scratch space for DFT values
let mut buf_dft: VecZnxDft =
VecZnxDft::from_bytes(cols, &mut tmp_bytes[..bytes_of_vec_znx_dft]);
let mut buf_dft: VecZnxDft = VecZnxDft::from_bytes_borrow(module, cols, tmp_bytes_vec_znx_dft);
// Applies buf_dft <- DFT(s) * DFT(c1)
module.svp_apply_dft(&mut buf_dft, sk, c1, cols);
@@ -173,16 +161,14 @@ pub fn encrypt_rlwe_sk_thread_safe<T>(
// buf_big = s x c1
module.vec_znx_idft_tmp_a(&mut buf_big, &mut buf_dft, cols);
let carry: &mut [u8] = &mut tmp_bytes[bytes_of_vec_znx_dft..];
// c0 <- -s x c1 + m
let c0: &mut T = ct.at_mut(0);
let c0: &mut VecZnx = ct.at_mut(0);
if let Some(pt) = pt {
module.vec_znx_big_sub_small_a_inplace(&mut buf_big, pt.at(0));
module.vec_znx_big_normalize(log_base2k, c0, &buf_big, carry);
module.vec_znx_big_normalize(log_base2k, c0, &buf_big, tmp_bytes_normalize);
} else {
module.vec_znx_big_normalize(log_base2k, c0, &buf_big, carry);
module.vec_znx_big_normalize(log_base2k, c0, &buf_big, tmp_bytes_normalize);
module.vec_znx_negate_inplace(c0);
}
@@ -211,7 +197,7 @@ pub fn encrypt_grlwe_sk_tmp_bytes(
) -> usize {
let cols = (log_q + log_base2k - 1) / log_base2k;
Elem::<VecZnx>::bytes_of(module, log_base2k, log_q, 2)
+ Plaintext::<VecZnx>::bytes_of(module, log_base2k, log_q)
+ Plaintext::bytes_of(module, log_base2k, log_q)
+ encrypt_rlwe_sk_tmp_bytes(module, log_base2k, log_q)
+ module.vmp_prepare_tmp_bytes(rows, cols)
}
@@ -240,25 +226,25 @@ pub fn encrypt_grlwe_sk(
min_tmp_bytes_len
);
let bytes_of_elem: usize = Elem::<VecZnxBorrow>::bytes_of(module, log_base2k, log_q, 2);
let bytes_of_pt: usize = Plaintext::<VecZnx>::bytes_of(module, log_base2k, log_q);
let bytes_of_elem: usize = Elem::<VecZnx>::bytes_of(module, log_base2k, log_q, 2);
let bytes_of_pt: usize = Plaintext::bytes_of(module, log_base2k, log_q);
let bytes_of_enc_sk: usize = encrypt_rlwe_sk_tmp_bytes(module, log_base2k, log_q);
let (tmp_bytes_pt, tmp_bytes) = tmp_bytes.split_at_mut(bytes_of_pt);
let (tmp_bytes_enc_sk, tmp_bytes) = tmp_bytes.split_at_mut(bytes_of_enc_sk);
let (tmp_bytes_elem, tmp_bytes_vmp_prepare_row) = tmp_bytes.split_at_mut(bytes_of_elem);
let mut tmp_elem: Elem<VecZnxBorrow> =
Elem::<VecZnxBorrow>::from_bytes(module, log_base2k, ct.log_q(), 2, tmp_bytes_elem);
let mut tmp_pt: Plaintext<VecZnxBorrow> =
Plaintext::<VecZnxBorrow>::from_bytes(module, log_base2k, log_q, tmp_bytes_pt);
let mut tmp_elem: Elem<VecZnx> =
Elem::<VecZnx>::from_bytes_borrow(module, log_base2k, ct.log_q(), 2, tmp_bytes_elem);
let mut tmp_pt: Plaintext =
Plaintext::from_bytes_borrow(module, log_base2k, log_q, tmp_bytes_pt);
(0..rows).for_each(|row_i| {
// Sets the i-th row of the RLWE sample to m (i.e. m * 2^{-log_base2k*i})
tmp_pt.at_mut(0).at_mut(row_i).copy_from_slice(&m.0);
tmp_pt.at_mut(0).at_mut(row_i).copy_from_slice(&m.raw());
// Encrypts RLWE(m * 2^{-log_base2k*i})
encrypt_rlwe_sk_thread_safe(
encrypt_rlwe_sk(
module,
&mut tmp_elem,
Some(&tmp_pt.0),