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abstracted products for all cross types

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This commit is contained in:
Jean-Philippe Bossuat
2025-05-11 18:33:47 +02:00
parent 54fab8e4f3
commit 73098af73a
9 changed files with 1219 additions and 946 deletions
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434
core/src/test_fft64/grlwe.rs
View File

@@ -1,14 +1,14 @@
#[cfg(test)]
mod tests {
use base2k::{FFT64, FillUniform, Module, ScalarZnx, ScalarZnxAlloc, ScratchOwned, Stats, VecZnxOps};
use base2k::{FFT64, Module, ScalarZnx, ScalarZnxAlloc, ScratchOwned, Stats, VecZnxOps};
use sampling::source::Source;
use crate::{
elem::Infos,
elem::{FromProdBy, FromProdByScratchSpace, Infos, ProdBy, ProdByScratchSpace},
grlwe::GRLWECt,
keys::{SecretKey, SecretKeyDft},
rlwe::{RLWECt, RLWECtDft, RLWEPt},
rlwe::{RLWECtDft, RLWEPt},
test_fft64::grlwe::noise_grlwe_rlwe_product,
};
@@ -67,413 +67,7 @@ mod tests {
}
#[test]
fn mul_rlwe() {
let module: Module<FFT64> = Module::<FFT64>::new(2048);
let log_base2k: usize = 12;
let log_k_grlwe: usize = 60;
let log_k_rlwe_in: usize = 45;
let log_k_rlwe_out: usize = 60;
let rows: usize = (log_k_rlwe_in + log_base2k - 1) / log_base2k;
let sigma: f64 = 3.2;
let bound: f64 = sigma * 6.0;
let mut ct_grlwe: GRLWECt<Vec<u8>, FFT64> = GRLWECt::new(&module, log_base2k, log_k_grlwe, rows);
let mut ct_rlwe_in: RLWECt<Vec<u8>> = RLWECt::new(&module, log_base2k, log_k_rlwe_in);
let mut ct_rlwe_out: RLWECt<Vec<u8>> = RLWECt::new(&module, log_base2k, log_k_rlwe_out);
let mut pt_want: RLWEPt<Vec<u8>> = RLWEPt::new(&module, log_base2k, log_k_rlwe_in);
let mut pt_have: RLWEPt<Vec<u8>> = RLWEPt::new(&module, log_base2k, log_k_rlwe_out);
let mut source_xs: Source = Source::new([0u8; 32]);
let mut source_xe: Source = Source::new([0u8; 32]);
let mut source_xa: Source = Source::new([0u8; 32]);
// Random input plaintext
pt_want
.data
.fill_uniform(log_base2k, 0, pt_want.size(), &mut source_xa);
let mut scratch: ScratchOwned = ScratchOwned::new(
GRLWECt::encrypt_sk_scratch_space(&module, ct_grlwe.size())
| RLWECt::decrypt_scratch_space(&module, ct_rlwe_out.size())
| RLWECt::encrypt_sk_scratch_space(&module, ct_rlwe_in.size())
| GRLWECt::mul_rlwe_scratch_space(
&module,
ct_rlwe_out.size(),
ct_rlwe_in.size(),
ct_grlwe.size(),
),
);
let mut sk0: SecretKey<Vec<u8>> = SecretKey::new(&module);
sk0.fill_ternary_prob(0.5, &mut source_xs);
let mut sk0_dft: SecretKeyDft<Vec<u8>, FFT64> = SecretKeyDft::new(&module);
sk0_dft.dft(&module, &sk0);
let mut sk1: SecretKey<Vec<u8>> = SecretKey::new(&module);
sk1.fill_ternary_prob(0.5, &mut source_xs);
let mut sk1_dft: SecretKeyDft<Vec<u8>, FFT64> = SecretKeyDft::new(&module);
sk1_dft.dft(&module, &sk1);
ct_grlwe.encrypt_sk(
&module,
&sk0.data,
&sk1_dft,
&mut source_xa,
&mut source_xe,
sigma,
bound,
scratch.borrow(),
);
ct_rlwe_in.encrypt_sk(
&module,
Some(&pt_want),
&sk0_dft,
&mut source_xa,
&mut source_xe,
sigma,
bound,
scratch.borrow(),
);
ct_grlwe.mul_rlwe(&module, &mut ct_rlwe_out, &ct_rlwe_in, scratch.borrow());
ct_rlwe_out.decrypt(&module, &mut pt_have, &sk1_dft, scratch.borrow());
module.vec_znx_sub_ab_inplace(&mut pt_have, 0, &pt_want, 0);
let noise_have: f64 = pt_have.data.std(0, log_base2k).log2();
let noise_want: f64 = noise_grlwe_rlwe_product(
module.n() as f64,
log_base2k,
0.5,
0.5,
0f64,
sigma * sigma,
0f64,
log_k_rlwe_in,
log_k_grlwe,
);
assert!(
(noise_have - noise_want).abs() <= 0.1,
"{} {}",
noise_have,
noise_want
);
module.free();
}
#[test]
fn mul_rlwe_inplace() {
let module: Module<FFT64> = Module::<FFT64>::new(2048);
let log_base2k: usize = 12;
let log_k_grlwe: usize = 60;
let log_k_rlwe: usize = 45;
let rows: usize = (log_k_rlwe + log_base2k - 1) / log_base2k;
let sigma: f64 = 3.2;
let bound: f64 = sigma * 6.0;
let mut ct_grlwe: GRLWECt<Vec<u8>, FFT64> = GRLWECt::new(&module, log_base2k, log_k_grlwe, rows);
let mut ct_rlwe: RLWECt<Vec<u8>> = RLWECt::new(&module, log_base2k, log_k_rlwe);
let mut pt_want: RLWEPt<Vec<u8>> = RLWEPt::new(&module, log_base2k, log_k_rlwe);
let mut pt_have: RLWEPt<Vec<u8>> = RLWEPt::new(&module, log_base2k, log_k_rlwe);
let mut source_xs: Source = Source::new([0u8; 32]);
let mut source_xe: Source = Source::new([0u8; 32]);
let mut source_xa: Source = Source::new([0u8; 32]);
// Random input plaintext
pt_want
.data
.fill_uniform(log_base2k, 0, pt_want.size(), &mut source_xa);
let mut scratch: ScratchOwned = ScratchOwned::new(
GRLWECt::encrypt_sk_scratch_space(&module, ct_grlwe.size())
| RLWECt::decrypt_scratch_space(&module, ct_rlwe.size())
| RLWECt::encrypt_sk_scratch_space(&module, ct_rlwe.size())
| GRLWECt::mul_rlwe_scratch_space(&module, ct_rlwe.size(), ct_rlwe.size(), ct_grlwe.size()),
);
let mut sk0: SecretKey<Vec<u8>> = SecretKey::new(&module);
sk0.fill_ternary_prob(0.5, &mut source_xs);
let mut sk0_dft: SecretKeyDft<Vec<u8>, FFT64> = SecretKeyDft::new(&module);
sk0_dft.dft(&module, &sk0);
let mut sk1: SecretKey<Vec<u8>> = SecretKey::new(&module);
sk1.fill_ternary_prob(0.5, &mut source_xs);
let mut sk1_dft: SecretKeyDft<Vec<u8>, FFT64> = SecretKeyDft::new(&module);
sk1_dft.dft(&module, &sk1);
ct_grlwe.encrypt_sk(
&module,
&sk0.data,
&sk1_dft,
&mut source_xa,
&mut source_xe,
sigma,
bound,
scratch.borrow(),
);
ct_rlwe.encrypt_sk(
&module,
Some(&pt_want),
&sk0_dft,
&mut source_xa,
&mut source_xe,
sigma,
bound,
scratch.borrow(),
);
ct_grlwe.mul_rlwe_inplace(&module, &mut ct_rlwe, scratch.borrow());
ct_rlwe.decrypt(&module, &mut pt_have, &sk1_dft, scratch.borrow());
module.vec_znx_sub_ab_inplace(&mut pt_have, 0, &pt_want, 0);
let noise_have: f64 = pt_have.data.std(0, log_base2k).log2();
let noise_want: f64 = noise_grlwe_rlwe_product(
module.n() as f64,
log_base2k,
0.5,
0.5,
0f64,
sigma * sigma,
0f64,
log_k_rlwe,
log_k_grlwe,
);
assert!(
(noise_have - noise_want).abs() <= 0.1,
"{} {}",
noise_have,
noise_want
);
module.free();
}
#[test]
fn mul_rlwe_dft() {
let module: Module<FFT64> = Module::<FFT64>::new(2048);
let log_base2k: usize = 12;
let log_k_grlwe: usize = 60;
let log_k_rlwe_in: usize = 45;
let log_k_rlwe_out: usize = 60;
let rows: usize = (log_k_rlwe_in + log_base2k - 1) / log_base2k;
let sigma: f64 = 3.2;
let bound: f64 = sigma * 6.0;
let mut ct_grlwe: GRLWECt<Vec<u8>, FFT64> = GRLWECt::new(&module, log_base2k, log_k_grlwe, rows);
let mut ct_rlwe_in: RLWECt<Vec<u8>> = RLWECt::new(&module, log_base2k, log_k_rlwe_in);
let mut ct_rlwe_in_dft: RLWECtDft<Vec<u8>, FFT64> = RLWECtDft::new(&module, log_base2k, log_k_rlwe_in);
let mut ct_rlwe_out: RLWECt<Vec<u8>> = RLWECt::new(&module, log_base2k, log_k_rlwe_out);
let mut ct_rlwe_out_dft: RLWECtDft<Vec<u8>, FFT64> = RLWECtDft::new(&module, log_base2k, log_k_rlwe_out);
let mut pt_want: RLWEPt<Vec<u8>> = RLWEPt::new(&module, log_base2k, log_k_rlwe_in);
let mut pt_have: RLWEPt<Vec<u8>> = RLWEPt::new(&module, log_base2k, log_k_rlwe_out);
let mut source_xs: Source = Source::new([0u8; 32]);
let mut source_xe: Source = Source::new([0u8; 32]);
let mut source_xa: Source = Source::new([0u8; 32]);
// Random input plaintext
pt_want
.data
.fill_uniform(log_base2k, 0, pt_want.size(), &mut source_xa);
let mut scratch: ScratchOwned = ScratchOwned::new(
GRLWECt::encrypt_sk_scratch_space(&module, ct_grlwe.size())
| RLWECt::decrypt_scratch_space(&module, ct_rlwe_out.size())
| RLWECt::encrypt_sk_scratch_space(&module, ct_rlwe_in.size())
| GRLWECt::mul_rlwe_scratch_space(
&module,
ct_rlwe_out.size(),
ct_rlwe_in.size(),
ct_grlwe.size(),
),
);
let mut sk0: SecretKey<Vec<u8>> = SecretKey::new(&module);
sk0.fill_ternary_prob(0.5, &mut source_xs);
let mut sk0_dft: SecretKeyDft<Vec<u8>, FFT64> = SecretKeyDft::new(&module);
sk0_dft.dft(&module, &sk0);
let mut sk1: SecretKey<Vec<u8>> = SecretKey::new(&module);
sk1.fill_ternary_prob(0.5, &mut source_xs);
let mut sk1_dft: SecretKeyDft<Vec<u8>, FFT64> = SecretKeyDft::new(&module);
sk1_dft.dft(&module, &sk1);
ct_grlwe.encrypt_sk(
&module,
&sk0.data,
&sk1_dft,
&mut source_xa,
&mut source_xe,
sigma,
bound,
scratch.borrow(),
);
ct_rlwe_in.encrypt_sk(
&module,
Some(&pt_want),
&sk0_dft,
&mut source_xa,
&mut source_xe,
sigma,
bound,
scratch.borrow(),
);
ct_rlwe_in.dft(&module, &mut ct_rlwe_in_dft);
ct_grlwe.mul_rlwe_dft(
&module,
&mut ct_rlwe_out_dft,
&ct_rlwe_in_dft,
scratch.borrow(),
);
ct_rlwe_out_dft.idft(&module, &mut ct_rlwe_out, scratch.borrow());
ct_rlwe_out.decrypt(&module, &mut pt_have, &sk1_dft, scratch.borrow());
module.vec_znx_sub_ab_inplace(&mut pt_have, 0, &pt_want, 0);
let noise_have: f64 = pt_have.data.std(0, log_base2k).log2();
let noise_want: f64 = noise_grlwe_rlwe_product(
module.n() as f64,
log_base2k,
0.5,
0.5,
0f64,
sigma * sigma,
0f64,
log_k_rlwe_in,
log_k_grlwe,
);
assert!(
(noise_have - noise_want).abs() <= 0.1,
"{} {}",
noise_have,
noise_want
);
module.free();
}
#[test]
fn mul_rlwe_dft_inplace() {
let module: Module<FFT64> = Module::<FFT64>::new(2048);
let log_base2k: usize = 12;
let log_k_grlwe: usize = 60;
let log_k_rlwe: usize = 45;
let rows: usize = (log_k_rlwe + log_base2k - 1) / log_base2k;
let sigma: f64 = 3.2;
let bound: f64 = sigma * 6.0;
let mut ct_grlwe: GRLWECt<Vec<u8>, FFT64> = GRLWECt::new(&module, log_base2k, log_k_grlwe, rows);
let mut ct_rlwe: RLWECt<Vec<u8>> = RLWECt::new(&module, log_base2k, log_k_rlwe);
let mut ct_rlwe_dft: RLWECtDft<Vec<u8>, FFT64> = RLWECtDft::new(&module, log_base2k, log_k_rlwe);
let mut pt_want: RLWEPt<Vec<u8>> = RLWEPt::new(&module, log_base2k, log_k_rlwe);
let mut pt_have: RLWEPt<Vec<u8>> = RLWEPt::new(&module, log_base2k, log_k_rlwe);
let mut source_xs: Source = Source::new([0u8; 32]);
let mut source_xe: Source = Source::new([0u8; 32]);
let mut source_xa: Source = Source::new([0u8; 32]);
// Random input plaintext
pt_want
.data
.fill_uniform(log_base2k, 0, pt_want.size(), &mut source_xa);
let mut scratch: ScratchOwned = ScratchOwned::new(
GRLWECt::encrypt_sk_scratch_space(&module, ct_grlwe.size())
| RLWECt::decrypt_scratch_space(&module, ct_rlwe.size())
| RLWECt::encrypt_sk_scratch_space(&module, ct_rlwe.size())
| GRLWECt::mul_rlwe_scratch_space(&module, ct_rlwe.size(), ct_rlwe.size(), ct_grlwe.size()),
);
let mut sk0: SecretKey<Vec<u8>> = SecretKey::new(&module);
sk0.fill_ternary_prob(0.5, &mut source_xs);
let mut sk0_dft: SecretKeyDft<Vec<u8>, FFT64> = SecretKeyDft::new(&module);
sk0_dft.dft(&module, &sk0);
let mut sk1: SecretKey<Vec<u8>> = SecretKey::new(&module);
sk1.fill_ternary_prob(0.5, &mut source_xs);
let mut sk1_dft: SecretKeyDft<Vec<u8>, FFT64> = SecretKeyDft::new(&module);
sk1_dft.dft(&module, &sk1);
ct_grlwe.encrypt_sk(
&module,
&sk0.data,
&sk1_dft,
&mut source_xa,
&mut source_xe,
sigma,
bound,
scratch.borrow(),
);
ct_rlwe.encrypt_sk(
&module,
Some(&pt_want),
&sk0_dft,
&mut source_xa,
&mut source_xe,
sigma,
bound,
scratch.borrow(),
);
ct_rlwe.dft(&module, &mut ct_rlwe_dft);
ct_grlwe.mul_rlwe_dft_inplace(&module, &mut ct_rlwe_dft, scratch.borrow());
ct_rlwe_dft.idft(&module, &mut ct_rlwe, scratch.borrow());
ct_rlwe.decrypt(&module, &mut pt_have, &sk1_dft, scratch.borrow());
module.vec_znx_sub_ab_inplace(&mut pt_have, 0, &pt_want, 0);
let noise_have: f64 = pt_have.data.std(0, log_base2k).log2();
let noise_want: f64 = noise_grlwe_rlwe_product(
module.n() as f64,
log_base2k,
0.5,
0.5,
0f64,
sigma * sigma,
0f64,
log_k_rlwe,
log_k_grlwe,
);
assert!(
(noise_have - noise_want).abs() <= 0.1,
"{} {}",
noise_have,
noise_want
);
module.free();
}
#[test]
fn mul_grlwe() {
fn from_prod_by_grlwe() {
let module: Module<FFT64> = Module::<FFT64>::new(2048);
let log_base2k: usize = 12;
let log_k_grlwe: usize = 60;
@@ -493,7 +87,7 @@ mod tests {
let mut scratch: ScratchOwned = ScratchOwned::new(
GRLWECt::encrypt_sk_scratch_space(&module, ct_grlwe_s0s1.size())
| RLWECtDft::decrypt_scratch_space(&module, ct_grlwe_s0s2.size())
| GRLWECt::mul_grlwe_scratch_space(
| GRLWECt::from_prod_by_grlwe_scratch_space(
&module,
ct_grlwe_s0s2.size(),
ct_grlwe_s0s1.size(),
@@ -544,12 +138,7 @@ mod tests {
);
// GRLWE_{s1}(s0) (x) GRLWE_{s2}(s1) = GRLWE_{s2}(s0)
ct_grlwe_s1s2.mul_grlwe(
&module,
&mut ct_grlwe_s0s2,
&ct_grlwe_s0s1,
scratch.borrow(),
);
ct_grlwe_s0s2.from_prod_by_grlwe(&module, &ct_grlwe_s0s1, &ct_grlwe_s1s2, scratch.borrow());
let mut ct_rlwe_dft_s0s2: RLWECtDft<Vec<u8>, FFT64> = RLWECtDft::new(&module, log_base2k, log_k_grlwe);
let mut pt: RLWEPt<Vec<u8>> = RLWEPt::new(&module, log_base2k, log_k_grlwe);
@@ -584,7 +173,7 @@ mod tests {
}
#[test]
fn mul_grlwe_inplace() {
fn prod_by_grlwe() {
let module: Module<FFT64> = Module::<FFT64>::new(2048);
let log_base2k: usize = 12;
let log_k_grlwe: usize = 60;
@@ -603,12 +192,7 @@ mod tests {
let mut scratch: ScratchOwned = ScratchOwned::new(
GRLWECt::encrypt_sk_scratch_space(&module, ct_grlwe_s0s1.size())
| RLWECtDft::decrypt_scratch_space(&module, ct_grlwe_s0s1.size())
| GRLWECt::mul_grlwe_scratch_space(
&module,
ct_grlwe_s0s1.size(),
ct_grlwe_s0s1.size(),
ct_grlwe_s1s2.size(),
),
| GRLWECt::prod_by_grlwe_scratch_space(&module, ct_grlwe_s0s1.size(), ct_grlwe_s1s2.size()),
);
let mut sk0: SecretKey<Vec<u8>> = SecretKey::new(&module);
@@ -654,7 +238,7 @@ mod tests {
);
// GRLWE_{s1}(s0) (x) GRLWE_{s2}(s1) = GRLWE_{s2}(s0)
ct_grlwe_s1s2.mul_grlwe_inplace(&module, &mut ct_grlwe_s0s1, scratch.borrow());
ct_grlwe_s0s1.prod_by_grlwe(&module, &ct_grlwe_s1s2, scratch.borrow());
let ct_grlwe_s0s2: GRLWECt<Vec<u8>, FFT64> = ct_grlwe_s0s1;

1
core/src/test_fft64/mod.rs
View File

@@ -1,3 +1,4 @@
mod grlwe;
mod rgsw;
mod rlwe;
mod rlwe_dft;

116
core/src/test_fft64/rgsw.rs
View File

@@ -2,7 +2,7 @@
mod tests {
use base2k::{
FFT64, Module, ScalarZnx, ScalarZnxAlloc, ScalarZnxDftOps, ScratchOwned, Stats, VecZnxBig, VecZnxBigAlloc, VecZnxBigOps,
VecZnxDft, VecZnxDftAlloc, VecZnxDftOps, VecZnxOps, VecZnxToMut, ZnxViewMut, ZnxZero,
VecZnxDft, VecZnxDftAlloc, VecZnxDftOps, VecZnxOps, ZnxZero,
};
use sampling::source::Source;
@@ -86,120 +86,6 @@ mod tests {
module.free();
}
#[test]
fn mul_rlwe() {
let module: Module<FFT64> = Module::<FFT64>::new(2048);
let log_base2k: usize = 12;
let log_k_grlwe: usize = 60;
let log_k_rlwe_in: usize = 45;
let log_k_rlwe_out: usize = 60;
let rows: usize = (log_k_rlwe_in + log_base2k - 1) / log_base2k;
let sigma: f64 = 3.2;
let bound: f64 = sigma * 6.0;
let mut ct_rgsw: RGSWCt<Vec<u8>, FFT64> = RGSWCt::new(&module, log_base2k, log_k_grlwe, rows);
let mut ct_rlwe_in: RLWECt<Vec<u8>> = RLWECt::new(&module, log_base2k, log_k_rlwe_in);
let mut ct_rlwe_out: RLWECt<Vec<u8>> = RLWECt::new(&module, log_base2k, log_k_rlwe_out);
let mut pt_rgsw: ScalarZnx<Vec<u8>> = module.new_scalar_znx(1);
let mut pt_want: RLWEPt<Vec<u8>> = RLWEPt::new(&module, log_base2k, log_k_rlwe_in);
let mut pt_have: RLWEPt<Vec<u8>> = RLWEPt::new(&module, log_base2k, log_k_rlwe_out);
let mut source_xs: Source = Source::new([0u8; 32]);
let mut source_xe: Source = Source::new([0u8; 32]);
let mut source_xa: Source = Source::new([0u8; 32]);
// Random input plaintext
// pt_want
// .data
// .fill_uniform(log_base2k, 0, pt_want.size(), &mut source_xa);
pt_want.to_mut().at_mut(0, 0)[1] = 1;
let k: usize = 1;
pt_rgsw.raw_mut()[k] = 1; // X^{k}
let mut scratch: ScratchOwned = ScratchOwned::new(
RGSWCt::encrypt_sk_scratch_space(&module, ct_rgsw.size())
| RLWECt::decrypt_scratch_space(&module, ct_rlwe_out.size())
| RLWECt::encrypt_sk_scratch_space(&module, ct_rlwe_in.size())
| RGSWCt::mul_rlwe_scratch_space(
&module,
ct_rlwe_out.size(),
ct_rlwe_in.size(),
ct_rgsw.size(),
),
);
let mut sk: SecretKey<Vec<u8>> = SecretKey::new(&module);
sk.fill_ternary_prob(0.5, &mut source_xs);
let mut sk_dft: SecretKeyDft<Vec<u8>, FFT64> = SecretKeyDft::new(&module);
sk_dft.dft(&module, &sk);
ct_rgsw.encrypt_sk(
&module,
&pt_rgsw,
&sk_dft,
&mut source_xa,
&mut source_xe,
sigma,
bound,
scratch.borrow(),
);
ct_rlwe_in.encrypt_sk(
&module,
Some(&pt_want),
&sk_dft,
&mut source_xa,
&mut source_xe,
sigma,
bound,
scratch.borrow(),
);
ct_rgsw.mul_rlwe(&module, &mut ct_rlwe_out, &ct_rlwe_in, scratch.borrow());
ct_rlwe_out.decrypt(&module, &mut pt_have, &sk_dft, scratch.borrow());
module.vec_znx_rotate_inplace(k as i64, &mut pt_want, 0);
module.vec_znx_sub_ab_inplace(&mut pt_have, 0, &pt_want, 0);
let noise_have: f64 = pt_have.data.std(0, log_base2k).log2();
let var_gct_err_lhs: f64 = sigma * sigma;
let var_gct_err_rhs: f64 = 0f64;
let var_msg: f64 = 1f64 / module.n() as f64; // X^{k}
let var_a0_err: f64 = sigma * sigma;
let var_a1_err: f64 = 1f64 / 12f64;
let noise_want: f64 = noise_rgsw_rlwe_product(
module.n() as f64,
log_base2k,
0.5,
var_msg,
var_a0_err,
var_a1_err,
var_gct_err_lhs,
var_gct_err_rhs,
log_k_rlwe_in,
log_k_grlwe,
);
assert!(
(noise_have - noise_want).abs() <= 0.1,
"{} {}",
noise_have,
noise_want
);
module.free();
}
}
#[allow(dead_code)]

431
core/src/test_fft64/rlwe.rs
View File

@@ -1,13 +1,19 @@
#[cfg(test)]
mod tests {
use base2k::{Decoding, Encoding, FFT64, Module, ScratchOwned, Stats, VecZnxOps, ZnxZero};
mod tests_rlwe {
use base2k::{
Decoding, Encoding, FFT64, FillUniform, Module, ScalarZnx, ScalarZnxAlloc, ScratchOwned, Stats, VecZnxOps, VecZnxToMut,
ZnxViewMut, ZnxZero,
};
use itertools::izip;
use sampling::source::Source;
use crate::{
elem::Infos,
elem::{FromProdBy, FromProdByScratchSpace, Infos, ProdBy, ProdByScratchSpace},
grlwe::GRLWECt,
keys::{PublicKey, SecretKey, SecretKeyDft},
rgsw::RGSWCt,
rlwe::{RLWECt, RLWECtDft, RLWEPt},
test_fft64::{grlwe::noise_grlwe_rlwe_product, rgsw::noise_rgsw_rlwe_product},
};
#[test]
@@ -193,4 +199,423 @@ mod tests {
module.free();
}
#[test]
fn from_prod_by_grlwe() {
let module: Module<FFT64> = Module::<FFT64>::new(2048);
let log_base2k: usize = 12;
let log_k_grlwe: usize = 60;
let log_k_rlwe_in: usize = 45;
let log_k_rlwe_out: usize = 60;
let rows: usize = (log_k_rlwe_in + log_base2k - 1) / log_base2k;
let sigma: f64 = 3.2;
let bound: f64 = sigma * 6.0;
let mut ct_grlwe: GRLWECt<Vec<u8>, FFT64> = GRLWECt::new(&module, log_base2k, log_k_grlwe, rows);
let mut ct_rlwe_in: RLWECt<Vec<u8>> = RLWECt::new(&module, log_base2k, log_k_rlwe_in);
let mut ct_rlwe_out: RLWECt<Vec<u8>> = RLWECt::new(&module, log_base2k, log_k_rlwe_out);
let mut pt_want: RLWEPt<Vec<u8>> = RLWEPt::new(&module, log_base2k, log_k_rlwe_in);
let mut pt_have: RLWEPt<Vec<u8>> = RLWEPt::new(&module, log_base2k, log_k_rlwe_out);
let mut source_xs: Source = Source::new([0u8; 32]);
let mut source_xe: Source = Source::new([0u8; 32]);
let mut source_xa: Source = Source::new([0u8; 32]);
// Random input plaintext
pt_want
.data
.fill_uniform(log_base2k, 0, pt_want.size(), &mut source_xa);
let mut scratch: ScratchOwned = ScratchOwned::new(
GRLWECt::encrypt_sk_scratch_space(&module, ct_grlwe.size())
| RLWECt::decrypt_scratch_space(&module, ct_rlwe_out.size())
| RLWECt::encrypt_sk_scratch_space(&module, ct_rlwe_in.size())
| RLWECt::from_prod_by_grlwe_scratch_space(
&module,
ct_rlwe_out.size(),
ct_rlwe_in.size(),
ct_grlwe.size(),
),
);
let mut sk0: SecretKey<Vec<u8>> = SecretKey::new(&module);
sk0.fill_ternary_prob(0.5, &mut source_xs);
let mut sk0_dft: SecretKeyDft<Vec<u8>, FFT64> = SecretKeyDft::new(&module);
sk0_dft.dft(&module, &sk0);
let mut sk1: SecretKey<Vec<u8>> = SecretKey::new(&module);
sk1.fill_ternary_prob(0.5, &mut source_xs);
let mut sk1_dft: SecretKeyDft<Vec<u8>, FFT64> = SecretKeyDft::new(&module);
sk1_dft.dft(&module, &sk1);
ct_grlwe.encrypt_sk(
&module,
&sk0.data,
&sk1_dft,
&mut source_xa,
&mut source_xe,
sigma,
bound,
scratch.borrow(),
);
ct_rlwe_in.encrypt_sk(
&module,
Some(&pt_want),
&sk0_dft,
&mut source_xa,
&mut source_xe,
sigma,
bound,
scratch.borrow(),
);
ct_rlwe_out.from_prod_by_grlwe(&module, &ct_rlwe_in, &ct_grlwe, scratch.borrow());
ct_rlwe_out.decrypt(&module, &mut pt_have, &sk1_dft, scratch.borrow());
module.vec_znx_sub_ab_inplace(&mut pt_have, 0, &pt_want, 0);
let noise_have: f64 = pt_have.data.std(0, log_base2k).log2();
let noise_want: f64 = noise_grlwe_rlwe_product(
module.n() as f64,
log_base2k,
0.5,
0.5,
0f64,
sigma * sigma,
0f64,
log_k_rlwe_in,
log_k_grlwe,
);
assert!(
(noise_have - noise_want).abs() <= 0.1,
"{} {}",
noise_have,
noise_want
);
module.free();
}
#[test]
fn prod_grlwe() {
let module: Module<FFT64> = Module::<FFT64>::new(2048);
let log_base2k: usize = 12;
let log_k_grlwe: usize = 60;
let log_k_rlwe: usize = 45;
let rows: usize = (log_k_rlwe + log_base2k - 1) / log_base2k;
let sigma: f64 = 3.2;
let bound: f64 = sigma * 6.0;
let mut ct_grlwe: GRLWECt<Vec<u8>, FFT64> = GRLWECt::new(&module, log_base2k, log_k_grlwe, rows);
let mut ct_rlwe: RLWECt<Vec<u8>> = RLWECt::new(&module, log_base2k, log_k_rlwe);
let mut pt_want: RLWEPt<Vec<u8>> = RLWEPt::new(&module, log_base2k, log_k_rlwe);
let mut pt_have: RLWEPt<Vec<u8>> = RLWEPt::new(&module, log_base2k, log_k_rlwe);
let mut source_xs: Source = Source::new([0u8; 32]);
let mut source_xe: Source = Source::new([0u8; 32]);
let mut source_xa: Source = Source::new([0u8; 32]);
// Random input plaintext
pt_want
.data
.fill_uniform(log_base2k, 0, pt_want.size(), &mut source_xa);
let mut scratch: ScratchOwned = ScratchOwned::new(
GRLWECt::encrypt_sk_scratch_space(&module, ct_grlwe.size())
| RLWECt::decrypt_scratch_space(&module, ct_rlwe.size())
| RLWECt::encrypt_sk_scratch_space(&module, ct_rlwe.size())
| RLWECt::prod_by_grlwe_scratch_space(&module, ct_rlwe.size(), ct_grlwe.size()),
);
let mut sk0: SecretKey<Vec<u8>> = SecretKey::new(&module);
sk0.fill_ternary_prob(0.5, &mut source_xs);
let mut sk0_dft: SecretKeyDft<Vec<u8>, FFT64> = SecretKeyDft::new(&module);
sk0_dft.dft(&module, &sk0);
let mut sk1: SecretKey<Vec<u8>> = SecretKey::new(&module);
sk1.fill_ternary_prob(0.5, &mut source_xs);
let mut sk1_dft: SecretKeyDft<Vec<u8>, FFT64> = SecretKeyDft::new(&module);
sk1_dft.dft(&module, &sk1);
ct_grlwe.encrypt_sk(
&module,
&sk0.data,
&sk1_dft,
&mut source_xa,
&mut source_xe,
sigma,
bound,
scratch.borrow(),
);
ct_rlwe.encrypt_sk(
&module,
Some(&pt_want),
&sk0_dft,
&mut source_xa,
&mut source_xe,
sigma,
bound,
scratch.borrow(),
);
ct_rlwe.prod_by_grlwe(&module, &ct_grlwe, scratch.borrow());
ct_rlwe.decrypt(&module, &mut pt_have, &sk1_dft, scratch.borrow());
module.vec_znx_sub_ab_inplace(&mut pt_have, 0, &pt_want, 0);
let noise_have: f64 = pt_have.data.std(0, log_base2k).log2();
let noise_want: f64 = noise_grlwe_rlwe_product(
module.n() as f64,
log_base2k,
0.5,
0.5,
0f64,
sigma * sigma,
0f64,
log_k_rlwe,
log_k_grlwe,
);
assert!(
(noise_have - noise_want).abs() <= 0.1,
"{} {}",
noise_have,
noise_want
);
module.free();
}
#[test]
fn from_prod_by_rgsw() {
let module: Module<FFT64> = Module::<FFT64>::new(2048);
let log_base2k: usize = 12;
let log_k_grlwe: usize = 60;
let log_k_rlwe_in: usize = 45;
let log_k_rlwe_out: usize = 60;
let rows: usize = (log_k_rlwe_in + log_base2k - 1) / log_base2k;
let sigma: f64 = 3.2;
let bound: f64 = sigma * 6.0;
let mut ct_rgsw: RGSWCt<Vec<u8>, FFT64> = RGSWCt::new(&module, log_base2k, log_k_grlwe, rows);
let mut ct_rlwe_in: RLWECt<Vec<u8>> = RLWECt::new(&module, log_base2k, log_k_rlwe_in);
let mut ct_rlwe_out: RLWECt<Vec<u8>> = RLWECt::new(&module, log_base2k, log_k_rlwe_out);
let mut pt_rgsw: ScalarZnx<Vec<u8>> = module.new_scalar_znx(1);
let mut pt_want: RLWEPt<Vec<u8>> = RLWEPt::new(&module, log_base2k, log_k_rlwe_in);
let mut pt_have: RLWEPt<Vec<u8>> = RLWEPt::new(&module, log_base2k, log_k_rlwe_out);
let mut source_xs: Source = Source::new([0u8; 32]);
let mut source_xe: Source = Source::new([0u8; 32]);
let mut source_xa: Source = Source::new([0u8; 32]);
// Random input plaintext
pt_want
.data
.fill_uniform(log_base2k, 0, pt_want.size(), &mut source_xa);
pt_want.to_mut().at_mut(0, 0)[1] = 1;
let k: usize = 1;
pt_rgsw.raw_mut()[k] = 1; // X^{k}
let mut scratch: ScratchOwned = ScratchOwned::new(
RGSWCt::encrypt_sk_scratch_space(&module, ct_rgsw.size())
| RLWECt::decrypt_scratch_space(&module, ct_rlwe_out.size())
| RLWECt::encrypt_sk_scratch_space(&module, ct_rlwe_in.size())
| RLWECt::from_prod_by_rgsw_scratch_space(
&module,
ct_rlwe_out.size(),
ct_rlwe_in.size(),
ct_rgsw.size(),
),
);
let mut sk: SecretKey<Vec<u8>> = SecretKey::new(&module);
sk.fill_ternary_prob(0.5, &mut source_xs);
let mut sk_dft: SecretKeyDft<Vec<u8>, FFT64> = SecretKeyDft::new(&module);
sk_dft.dft(&module, &sk);
ct_rgsw.encrypt_sk(
&module,
&pt_rgsw,
&sk_dft,
&mut source_xa,
&mut source_xe,
sigma,
bound,
scratch.borrow(),
);
ct_rlwe_in.encrypt_sk(
&module,
Some(&pt_want),
&sk_dft,
&mut source_xa,
&mut source_xe,
sigma,
bound,
scratch.borrow(),
);
ct_rlwe_out.from_prod_by_rgsw(&module, &ct_rlwe_in, &ct_rgsw, scratch.borrow());
ct_rlwe_out.decrypt(&module, &mut pt_have, &sk_dft, scratch.borrow());
module.vec_znx_rotate_inplace(k as i64, &mut pt_want, 0);
module.vec_znx_sub_ab_inplace(&mut pt_have, 0, &pt_want, 0);
let noise_have: f64 = pt_have.data.std(0, log_base2k).log2();
let var_gct_err_lhs: f64 = sigma * sigma;
let var_gct_err_rhs: f64 = 0f64;
let var_msg: f64 = 1f64 / module.n() as f64; // X^{k}
let var_a0_err: f64 = sigma * sigma;
let var_a1_err: f64 = 1f64 / 12f64;
let noise_want: f64 = noise_rgsw_rlwe_product(
module.n() as f64,
log_base2k,
0.5,
var_msg,
var_a0_err,
var_a1_err,
var_gct_err_lhs,
var_gct_err_rhs,
log_k_rlwe_in,
log_k_grlwe,
);
assert!(
(noise_have - noise_want).abs() <= 0.1,
"{} {}",
noise_have,
noise_want
);
module.free();
}
#[test]
fn prod_by_rgsw() {
let module: Module<FFT64> = Module::<FFT64>::new(2048);
let log_base2k: usize = 12;
let log_k_grlwe: usize = 60;
let log_k_rlwe_in: usize = 45;
let log_k_rlwe_out: usize = 60;
let rows: usize = (log_k_rlwe_in + log_base2k - 1) / log_base2k;
let sigma: f64 = 3.2;
let bound: f64 = sigma * 6.0;
let mut ct_rgsw: RGSWCt<Vec<u8>, FFT64> = RGSWCt::new(&module, log_base2k, log_k_grlwe, rows);
let mut ct_rlwe: RLWECt<Vec<u8>> = RLWECt::new(&module, log_base2k, log_k_rlwe_in);
let mut pt_rgsw: ScalarZnx<Vec<u8>> = module.new_scalar_znx(1);
let mut pt_want: RLWEPt<Vec<u8>> = RLWEPt::new(&module, log_base2k, log_k_rlwe_in);
let mut pt_have: RLWEPt<Vec<u8>> = RLWEPt::new(&module, log_base2k, log_k_rlwe_out);
let mut source_xs: Source = Source::new([0u8; 32]);
let mut source_xe: Source = Source::new([0u8; 32]);
let mut source_xa: Source = Source::new([0u8; 32]);
// Random input plaintext
pt_want
.data
.fill_uniform(log_base2k, 0, pt_want.size(), &mut source_xa);
pt_want.to_mut().at_mut(0, 0)[1] = 1;
let k: usize = 1;
pt_rgsw.raw_mut()[k] = 1; // X^{k}
let mut scratch: ScratchOwned = ScratchOwned::new(
RGSWCt::encrypt_sk_scratch_space(&module, ct_rgsw.size())
| RLWECt::decrypt_scratch_space(&module, ct_rlwe.size())
| RLWECt::encrypt_sk_scratch_space(&module, ct_rlwe.size())
| RLWECt::prod_by_rgsw_scratch_space(&module, ct_rlwe.size(), ct_rgsw.size()),
);
let mut sk: SecretKey<Vec<u8>> = SecretKey::new(&module);
sk.fill_ternary_prob(0.5, &mut source_xs);
let mut sk_dft: SecretKeyDft<Vec<u8>, FFT64> = SecretKeyDft::new(&module);
sk_dft.dft(&module, &sk);
ct_rgsw.encrypt_sk(
&module,
&pt_rgsw,
&sk_dft,
&mut source_xa,
&mut source_xe,
sigma,
bound,
scratch.borrow(),
);
ct_rlwe.encrypt_sk(
&module,
Some(&pt_want),
&sk_dft,
&mut source_xa,
&mut source_xe,
sigma,
bound,
scratch.borrow(),
);
ct_rlwe.prod_by_rgsw(&module, &ct_rgsw, scratch.borrow());
ct_rlwe.decrypt(&module, &mut pt_have, &sk_dft, scratch.borrow());
module.vec_znx_rotate_inplace(k as i64, &mut pt_want, 0);
module.vec_znx_sub_ab_inplace(&mut pt_have, 0, &pt_want, 0);
let noise_have: f64 = pt_have.data.std(0, log_base2k).log2();
let var_gct_err_lhs: f64 = sigma * sigma;
let var_gct_err_rhs: f64 = 0f64;
let var_msg: f64 = 1f64 / module.n() as f64; // X^{k}
let var_a0_err: f64 = sigma * sigma;
let var_a1_err: f64 = 1f64 / 12f64;
let noise_want: f64 = noise_rgsw_rlwe_product(
module.n() as f64,
log_base2k,
0.5,
var_msg,
var_a0_err,
var_a1_err,
var_gct_err_lhs,
var_gct_err_rhs,
log_k_rlwe_in,
log_k_grlwe,
);
assert!(
(noise_have - noise_want).abs() <= 0.1,
"{} {}",
noise_have,
noise_want
);
module.free();
}
}

216
core/src/test_fft64/rlwe_dft.rs Normal file
View File

@@ -0,0 +1,216 @@
#[cfg(test)]
mod tests {
use crate::{
elem::{FromProdBy, FromProdByScratchSpace, Infos, ProdBy, ProdByScratchSpace},
grlwe::GRLWECt,
keys::{SecretKey, SecretKeyDft},
rlwe::{RLWECt, RLWECtDft, RLWEPt},
test_fft64::grlwe::noise_grlwe_rlwe_product,
};
use base2k::{FFT64, FillUniform, Module, ScratchOwned, Stats, VecZnxOps};
use sampling::source::Source;
#[test]
fn from_prod_by_grlwe() {
let module: Module<FFT64> = Module::<FFT64>::new(2048);
let log_base2k: usize = 12;
let log_k_grlwe: usize = 60;
let log_k_rlwe_in: usize = 45;
let log_k_rlwe_out: usize = 60;
let rows: usize = (log_k_rlwe_in + log_base2k - 1) / log_base2k;
let sigma: f64 = 3.2;
let bound: f64 = sigma * 6.0;
let mut ct_grlwe: GRLWECt<Vec<u8>, FFT64> = GRLWECt::new(&module, log_base2k, log_k_grlwe, rows);
let mut ct_rlwe_in: RLWECt<Vec<u8>> = RLWECt::new(&module, log_base2k, log_k_rlwe_in);
let mut ct_rlwe_in_dft: RLWECtDft<Vec<u8>, FFT64> = RLWECtDft::new(&module, log_base2k, log_k_rlwe_in);
let mut ct_rlwe_out: RLWECt<Vec<u8>> = RLWECt::new(&module, log_base2k, log_k_rlwe_out);
let mut ct_rlwe_out_dft: RLWECtDft<Vec<u8>, FFT64> = RLWECtDft::new(&module, log_base2k, log_k_rlwe_out);
let mut pt_want: RLWEPt<Vec<u8>> = RLWEPt::new(&module, log_base2k, log_k_rlwe_in);
let mut pt_have: RLWEPt<Vec<u8>> = RLWEPt::new(&module, log_base2k, log_k_rlwe_out);
let mut source_xs: Source = Source::new([0u8; 32]);
let mut source_xe: Source = Source::new([0u8; 32]);
let mut source_xa: Source = Source::new([0u8; 32]);
// Random input plaintext
pt_want
.data
.fill_uniform(log_base2k, 0, pt_want.size(), &mut source_xa);
let mut scratch: ScratchOwned = ScratchOwned::new(
GRLWECt::encrypt_sk_scratch_space(&module, ct_grlwe.size())
| RLWECt::decrypt_scratch_space(&module, ct_rlwe_out.size())
| RLWECt::encrypt_sk_scratch_space(&module, ct_rlwe_in.size())
| RLWECtDft::from_prod_by_grlwe_scratch_space(
&module,
ct_rlwe_out.size(),
ct_rlwe_in.size(),
ct_grlwe.size(),
),
);
let mut sk0: SecretKey<Vec<u8>> = SecretKey::new(&module);
sk0.fill_ternary_prob(0.5, &mut source_xs);
let mut sk0_dft: SecretKeyDft<Vec<u8>, FFT64> = SecretKeyDft::new(&module);
sk0_dft.dft(&module, &sk0);
let mut sk1: SecretKey<Vec<u8>> = SecretKey::new(&module);
sk1.fill_ternary_prob(0.5, &mut source_xs);
let mut sk1_dft: SecretKeyDft<Vec<u8>, FFT64> = SecretKeyDft::new(&module);
sk1_dft.dft(&module, &sk1);
ct_grlwe.encrypt_sk(
&module,
&sk0.data,
&sk1_dft,
&mut source_xa,
&mut source_xe,
sigma,
bound,
scratch.borrow(),
);
ct_rlwe_in.encrypt_sk(
&module,
Some(&pt_want),
&sk0_dft,
&mut source_xa,
&mut source_xe,
sigma,
bound,
scratch.borrow(),
);
ct_rlwe_in.dft(&module, &mut ct_rlwe_in_dft);
ct_rlwe_out_dft.from_prod_by_grlwe(&module, &ct_rlwe_in_dft, &ct_grlwe, scratch.borrow());
ct_rlwe_out_dft.idft(&module, &mut ct_rlwe_out, scratch.borrow());
ct_rlwe_out.decrypt(&module, &mut pt_have, &sk1_dft, scratch.borrow());
module.vec_znx_sub_ab_inplace(&mut pt_have, 0, &pt_want, 0);
let noise_have: f64 = pt_have.data.std(0, log_base2k).log2();
let noise_want: f64 = noise_grlwe_rlwe_product(
module.n() as f64,
log_base2k,
0.5,
0.5,
0f64,
sigma * sigma,
0f64,
log_k_rlwe_in,
log_k_grlwe,
);
assert!(
(noise_have - noise_want).abs() <= 0.1,
"{} {}",
noise_have,
noise_want
);
module.free();
}
#[test]
fn prod_by_grlwe() {
let module: Module<FFT64> = Module::<FFT64>::new(2048);
let log_base2k: usize = 12;
let log_k_grlwe: usize = 60;
let log_k_rlwe: usize = 45;
let rows: usize = (log_k_rlwe + log_base2k - 1) / log_base2k;
let sigma: f64 = 3.2;
let bound: f64 = sigma * 6.0;
let mut ct_grlwe: GRLWECt<Vec<u8>, FFT64> = GRLWECt::new(&module, log_base2k, log_k_grlwe, rows);
let mut ct_rlwe: RLWECt<Vec<u8>> = RLWECt::new(&module, log_base2k, log_k_rlwe);
let mut ct_rlwe_dft: RLWECtDft<Vec<u8>, FFT64> = RLWECtDft::new(&module, log_base2k, log_k_rlwe);
let mut pt_want: RLWEPt<Vec<u8>> = RLWEPt::new(&module, log_base2k, log_k_rlwe);
let mut pt_have: RLWEPt<Vec<u8>> = RLWEPt::new(&module, log_base2k, log_k_rlwe);
let mut source_xs: Source = Source::new([0u8; 32]);
let mut source_xe: Source = Source::new([0u8; 32]);
let mut source_xa: Source = Source::new([0u8; 32]);
// Random input plaintext
pt_want
.data
.fill_uniform(log_base2k, 0, pt_want.size(), &mut source_xa);
let mut scratch: ScratchOwned = ScratchOwned::new(
GRLWECt::encrypt_sk_scratch_space(&module, ct_grlwe.size())
| RLWECt::decrypt_scratch_space(&module, ct_rlwe.size())
| RLWECt::encrypt_sk_scratch_space(&module, ct_rlwe.size())
| RLWECtDft::prod_by_grlwe_scratch_space(&module, ct_rlwe_dft.size(), ct_grlwe.size()),
);
let mut sk0: SecretKey<Vec<u8>> = SecretKey::new(&module);
sk0.fill_ternary_prob(0.5, &mut source_xs);
let mut sk0_dft: SecretKeyDft<Vec<u8>, FFT64> = SecretKeyDft::new(&module);
sk0_dft.dft(&module, &sk0);
let mut sk1: SecretKey<Vec<u8>> = SecretKey::new(&module);
sk1.fill_ternary_prob(0.5, &mut source_xs);
let mut sk1_dft: SecretKeyDft<Vec<u8>, FFT64> = SecretKeyDft::new(&module);
sk1_dft.dft(&module, &sk1);
ct_grlwe.encrypt_sk(
&module,
&sk0.data,
&sk1_dft,
&mut source_xa,
&mut source_xe,
sigma,
bound,
scratch.borrow(),
);
ct_rlwe.encrypt_sk(
&module,
Some(&pt_want),
&sk0_dft,
&mut source_xa,
&mut source_xe,
sigma,
bound,
scratch.borrow(),
);
ct_rlwe.dft(&module, &mut ct_rlwe_dft);
ct_rlwe_dft.prod_by_grlwe(&module, &ct_grlwe, scratch.borrow());
ct_rlwe_dft.idft(&module, &mut ct_rlwe, scratch.borrow());
ct_rlwe.decrypt(&module, &mut pt_have, &sk1_dft, scratch.borrow());
module.vec_znx_sub_ab_inplace(&mut pt_have, 0, &pt_want, 0);
let noise_have: f64 = pt_have.data.std(0, log_base2k).log2();
let noise_want: f64 = noise_grlwe_rlwe_product(
module.n() as f64,
log_base2k,
0.5,
0.5,
0f64,
sigma * sigma,
0f64,
log_k_rlwe,
log_k_grlwe,
);
assert!(
(noise_have - noise_want).abs() <= 0.1,
"{} {}",
noise_have,
noise_want
);
module.free();
}
}