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Reorganized other crates

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Jean-Philippe Bossuat
2025-06-13 18:57:28 +02:00
parent 4d4b43a4e5
commit e8cfb5e2ab
52 changed files with 2787 additions and 1380 deletions
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274
core/src/gglwe/test_fft64/automorphism_key.rs Normal file
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use backend::{FFT64, Module, ScalarZnxOps, ScratchOwned, Stats, VecZnxOps};
use sampling::source::Source;
use crate::{
FourierGLWECiphertext, FourierGLWESecret, GLWEAutomorphismKey, GLWEPlaintext, GLWESecret, GetRow, Infos, div_ceil,
noise::log2_std_noise_gglwe_product,
};
#[test]
fn automorphism() {
let log_n: usize = 8;
let basek: usize = 12;
let k_in: usize = 60;
let k_out: usize = 40;
let digits: usize = k_in.div_ceil(basek);
let sigma: f64 = 3.2;
(1..4).for_each(|rank| {
(2..digits + 1).for_each(|di| {
println!("test automorphism digits: {} rank: {}", di, rank);
let k_apply: usize = (digits + di) * basek;
test_automorphism(-1, 5, log_n, basek, di, k_in, k_out, k_apply, sigma, rank);
});
});
}
#[test]
fn automorphism_inplace() {
let log_n: usize = 8;
let basek: usize = 12;
let k_in: usize = 60;
let digits: usize = k_in.div_ceil(basek);
let sigma: f64 = 3.2;
(1..4).for_each(|rank| {
(2..digits + 1).for_each(|di| {
println!("test automorphism digits: {} rank: {}", di, rank);
let k_apply: usize = (digits + di) * basek;
test_automorphism_inplace(-1, 5, log_n, basek, di, k_in, k_apply, sigma, rank);
});
});
}
fn test_automorphism(
p0: i64,
p1: i64,
log_n: usize,
basek: usize,
digits: usize,
k_in: usize,
k_out: usize,
k_apply: usize,
sigma: f64,
rank: usize,
) {
let module: Module<FFT64> = Module::<FFT64>::new(1 << log_n);
let digits_in: usize = 1;
let rows_in: usize = k_in / (basek * digits);
let rows_apply: usize = k_in.div_ceil(basek * digits);
let mut auto_key_in: GLWEAutomorphismKey<Vec<u8>, FFT64> =
GLWEAutomorphismKey::alloc(&module, basek, k_in, rows_in, digits_in, rank);
let mut auto_key_out: GLWEAutomorphismKey<Vec<u8>, FFT64> =
GLWEAutomorphismKey::alloc(&module, basek, k_out, rows_in, digits_in, rank);
let mut auto_key_apply: GLWEAutomorphismKey<Vec<u8>, FFT64> =
GLWEAutomorphismKey::alloc(&module, basek, k_apply, rows_apply, digits, rank);
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]);
let mut scratch: ScratchOwned = ScratchOwned::new(
GLWEAutomorphismKey::generate_from_sk_scratch_space(&module, basek, k_apply, rank)
| FourierGLWECiphertext::decrypt_scratch_space(&module, basek, k_out)
| GLWEAutomorphismKey::automorphism_scratch_space(&module, basek, k_out, k_in, k_apply, digits, rank),
);
let mut sk: GLWESecret<Vec<u8>> = GLWESecret::alloc(&module, rank);
sk.fill_ternary_prob(0.5, &mut source_xs);
// gglwe_{s1}(s0) = s0 -> s1
auto_key_in.generate_from_sk(
&module,
p0,
&sk,
&mut source_xa,
&mut source_xe,
sigma,
scratch.borrow(),
);
// gglwe_{s2}(s1) -> s1 -> s2
auto_key_apply.generate_from_sk(
&module,
p1,
&sk,
&mut source_xa,
&mut source_xe,
sigma,
scratch.borrow(),
);
// gglwe_{s1}(s0) (x) gglwe_{s2}(s1) = gglwe_{s2}(s0)
auto_key_out.automorphism(&module, &auto_key_in, &auto_key_apply, scratch.borrow());
let mut ct_glwe_dft: FourierGLWECiphertext<Vec<u8>, FFT64> = FourierGLWECiphertext::alloc(&module, basek, k_out, rank);
let mut pt: GLWEPlaintext<Vec<u8>> = GLWEPlaintext::alloc(&module, basek, k_out);
let mut sk_auto: GLWESecret<Vec<u8>> = GLWESecret::alloc(&module, rank);
sk_auto.fill_zero(); // Necessary to avoid panic of unfilled sk
(0..rank).for_each(|i| {
module.scalar_znx_automorphism(
module.galois_element_inv(p0 * p1),
&mut sk_auto.data,
i,
&sk.data,
i,
);
});
let sk_auto_dft: FourierGLWESecret<Vec<u8>, FFT64> = FourierGLWESecret::from(&module, &sk_auto);
(0..auto_key_out.rank_in()).for_each(|col_i| {
(0..auto_key_out.rows()).for_each(|row_i| {
auto_key_out.get_row(&module, row_i, col_i, &mut ct_glwe_dft);
ct_glwe_dft.decrypt(&module, &mut pt, &sk_auto_dft, scratch.borrow());
module.vec_znx_sub_scalar_inplace(
&mut pt.data,
0,
(digits_in - 1) + row_i * digits_in,
&sk.data,
col_i,
);
let noise_have: f64 = pt.data.std(0, basek).log2();
let noise_want: f64 = log2_std_noise_gglwe_product(
module.n() as f64,
basek * digits,
0.5,
0.5,
0f64,
sigma * sigma,
0f64,
rank as f64,
k_out,
k_apply,
);
assert!(
noise_have < noise_want + 0.5,
"{} {}",
noise_have,
noise_want
);
});
});
}
fn test_automorphism_inplace(
p0: i64,
p1: i64,
log_n: usize,
basek: usize,
digits: usize,
k_in: usize,
k_apply: usize,
sigma: f64,
rank: usize,
) {
let module: Module<FFT64> = Module::<FFT64>::new(1 << log_n);
let digits_in: usize = 1;
let rows_in: usize = k_in / (basek * digits);
let rows_apply: usize = k_in.div_ceil(basek * digits);
let mut auto_key: GLWEAutomorphismKey<Vec<u8>, FFT64> =
GLWEAutomorphismKey::alloc(&module, basek, k_in, rows_in, digits_in, rank);
let mut auto_key_apply: GLWEAutomorphismKey<Vec<u8>, FFT64> =
GLWEAutomorphismKey::alloc(&module, basek, k_apply, rows_apply, digits, rank);
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]);
let mut scratch: ScratchOwned = ScratchOwned::new(
GLWEAutomorphismKey::generate_from_sk_scratch_space(&module, basek, k_apply, rank)
| FourierGLWECiphertext::decrypt_scratch_space(&module, basek, k_in)
| GLWEAutomorphismKey::automorphism_inplace_scratch_space(&module, basek, k_in, k_apply, digits, rank),
);
let mut sk: GLWESecret<Vec<u8>> = GLWESecret::alloc(&module, rank);
sk.fill_ternary_prob(0.5, &mut source_xs);
// gglwe_{s1}(s0) = s0 -> s1
auto_key.generate_from_sk(
&module,
p0,
&sk,
&mut source_xa,
&mut source_xe,
sigma,
scratch.borrow(),
);
// gglwe_{s2}(s1) -> s1 -> s2
auto_key_apply.generate_from_sk(
&module,
p1,
&sk,
&mut source_xa,
&mut source_xe,
sigma,
scratch.borrow(),
);
// gglwe_{s1}(s0) (x) gglwe_{s2}(s1) = gglwe_{s2}(s0)
auto_key.automorphism_inplace(&module, &auto_key_apply, scratch.borrow());
let mut ct_glwe_dft: FourierGLWECiphertext<Vec<u8>, FFT64> = FourierGLWECiphertext::alloc(&module, basek, k_in, rank);
let mut pt: GLWEPlaintext<Vec<u8>> = GLWEPlaintext::alloc(&module, basek, k_in);
let mut sk_auto: GLWESecret<Vec<u8>> = GLWESecret::alloc(&module, rank);
sk_auto.fill_zero(); // Necessary to avoid panic of unfilled sk
(0..rank).for_each(|i| {
module.scalar_znx_automorphism(
module.galois_element_inv(p0 * p1),
&mut sk_auto.data,
i,
&sk.data,
i,
);
});
let sk_auto_dft: FourierGLWESecret<Vec<u8>, FFT64> = FourierGLWESecret::from(&module, &sk_auto);
(0..auto_key.rank_in()).for_each(|col_i| {
(0..auto_key.rows()).for_each(|row_i| {
auto_key.get_row(&module, row_i, col_i, &mut ct_glwe_dft);
ct_glwe_dft.decrypt(&module, &mut pt, &sk_auto_dft, scratch.borrow());
module.vec_znx_sub_scalar_inplace(
&mut pt.data,
0,
(digits_in - 1) + row_i * digits_in,
&sk.data,
col_i,
);
let noise_have: f64 = pt.data.std(0, basek).log2();
let noise_want: f64 = log2_std_noise_gglwe_product(
module.n() as f64,
basek * digits,
0.5,
0.5,
0f64,
sigma * sigma,
0f64,
rank as f64,
k_in,
k_apply,
);
assert!(
noise_have < noise_want + 0.5,
"{} {}",
noise_have,
noise_want
);
});
});
}

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core/src/gglwe/test_fft64/gglwe.rs Normal file
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use backend::{FFT64, Module, ScalarZnx, ScalarZnxAlloc, ScalarZnxToMut, ScratchOwned, Stats, VecZnxOps, ZnxViewMut};
use sampling::source::Source;
use crate::{
FourierGLWECiphertext, FourierGLWESecret, GGSWCiphertext, GLWEPlaintext, GLWESecret, GLWESwitchingKey, GetRow, Infos,
div_ceil,
noise::{log2_std_noise_gglwe_product, noise_ggsw_product},
};
#[test]
fn encrypt_sk() {
let log_n: usize = 8;
let basek: usize = 12;
let k_ksk: usize = 54;
let digits: usize = k_ksk / basek;
(1..4).for_each(|rank_in| {
(1..4).for_each(|rank_out| {
(1..digits + 1).for_each(|di| {
println!(
"test encrypt_sk digits: {} ranks: ({} {})",
di, rank_in, rank_out
);
test_encrypt_sk(log_n, basek, k_ksk, di, rank_in, rank_out, 3.2);
});
});
});
}
#[test]
fn key_switch() {
let log_n: usize = 8;
let basek: usize = 12;
let k_in: usize = 60;
let digits: usize = k_in.div_ceil(basek);
(1..4).for_each(|rank_in_s0s1| {
(1..4).for_each(|rank_out_s0s1| {
(1..4).for_each(|rank_out_s1s2| {
(1..digits + 1).for_each(|di| {
let k_ksk: usize = k_in + basek * di;
println!(
"test key_switch digits: {} ranks: ({},{},{})",
di, rank_in_s0s1, rank_out_s0s1, rank_out_s1s2
);
let k_out: usize = k_ksk; // Better capture noise.
test_key_switch(
log_n,
basek,
k_out,
k_in,
k_ksk,
di,
rank_in_s0s1,
rank_out_s0s1,
rank_out_s1s2,
3.2,
);
})
})
});
});
}
#[test]
fn key_switch_inplace() {
let log_n: usize = 8;
let basek: usize = 12;
let k_ct: usize = 60;
let digits: usize = k_ct.div_ceil(basek);
(1..4).for_each(|rank_in_s0s1| {
(1..4).for_each(|rank_out_s0s1| {
(1..digits + 1).for_each(|di| {
let k_ksk: usize = k_ct + basek * di;
println!(
"test key_switch_inplace digits: {} ranks: ({},{})",
di, rank_in_s0s1, rank_out_s0s1
);
test_key_switch_inplace(
log_n,
basek,
k_ct,
k_ksk,
di,
rank_in_s0s1,
rank_out_s0s1,
3.2,
);
});
});
});
}
#[test]
fn external_product() {
let log_n: usize = 8;
let basek: usize = 12;
let k_in: usize = 60;
let digits: usize = k_in.div_ceil(basek);
(1..4).for_each(|rank_in| {
(1..4).for_each(|rank_out| {
(1..digits + 1).for_each(|di| {
let k_ggsw: usize = k_in + basek * di;
println!(
"test external_product digits: {} ranks: ({} {})",
di, rank_in, rank_out
);
let k_out: usize = k_in; // Better capture noise.
test_external_product(
log_n, basek, k_out, k_in, k_ggsw, di, rank_in, rank_out, 3.2,
);
});
});
});
}
#[test]
fn external_product_inplace() {
let log_n: usize = 5;
let basek: usize = 12;
let k_ct: usize = 60;
let digits: usize = k_ct.div_ceil(basek);
(1..4).for_each(|rank_in| {
(1..4).for_each(|rank_out| {
(1..digits).for_each(|di| {
let k_ggsw: usize = k_ct + basek * di;
println!(
"test external_product_inplace digits: {} ranks: ({} {})",
di, rank_in, rank_out
);
test_external_product_inplace(log_n, basek, k_ct, k_ggsw, di, rank_in, rank_out, 3.2);
});
});
});
}
fn test_encrypt_sk(log_n: usize, basek: usize, k_ksk: usize, digits: usize, rank_in: usize, rank_out: usize, sigma: f64) {
let module: Module<FFT64> = Module::<FFT64>::new(1 << log_n);
let rows: usize = (k_ksk - digits * basek) / (digits * basek);
let mut ksk: GLWESwitchingKey<Vec<u8>, FFT64> =
GLWESwitchingKey::alloc(&module, basek, k_ksk, rows, digits, rank_in, rank_out);
let mut pt: GLWEPlaintext<Vec<u8>> = GLWEPlaintext::alloc(&module, basek, k_ksk);
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]);
let mut scratch: ScratchOwned = ScratchOwned::new(
GLWESwitchingKey::encrypt_sk_scratch_space(&module, basek, k_ksk, rank_out)
| FourierGLWECiphertext::decrypt_scratch_space(&module, basek, k_ksk),
);
let mut sk_in: GLWESecret<Vec<u8>> = GLWESecret::alloc(&module, rank_in);
sk_in.fill_ternary_prob(0.5, &mut source_xs);
let mut sk_out: GLWESecret<Vec<u8>> = GLWESecret::alloc(&module, rank_out);
sk_out.fill_ternary_prob(0.5, &mut source_xs);
let sk_out_dft: FourierGLWESecret<Vec<u8>, FFT64> = FourierGLWESecret::from(&module, &sk_out);
ksk.generate_from_sk(
&module,
&sk_in,
&sk_out_dft,
&mut source_xa,
&mut source_xe,
sigma,
scratch.borrow(),
);
let mut ct_glwe_fourier: FourierGLWECiphertext<Vec<u8>, FFT64> =
FourierGLWECiphertext::alloc(&module, basek, k_ksk, rank_out);
(0..ksk.rank_in()).for_each(|col_i| {
(0..ksk.rows()).for_each(|row_i| {
ksk.get_row(&module, row_i, col_i, &mut ct_glwe_fourier);
ct_glwe_fourier.decrypt(&module, &mut pt, &sk_out_dft, scratch.borrow());
module.vec_znx_sub_scalar_inplace(
&mut pt.data,
0,
(digits - 1) + row_i * digits,
&sk_in.data,
col_i,
);
let std_pt: f64 = pt.data.std(0, basek) * (k_ksk as f64).exp2();
assert!((sigma - std_pt).abs() <= 0.5, "{} {}", sigma, std_pt);
});
});
}
fn test_key_switch(
log_n: usize,
basek: usize,
k_out: usize,
k_in: usize,
k_ksk: usize,
digits: usize,
rank_in_s0s1: usize,
rank_out_s0s1: usize,
rank_out_s1s2: usize,
sigma: f64,
) {
let module: Module<FFT64> = Module::<FFT64>::new(1 << log_n);
let rows: usize = k_in.div_ceil(basek * digits);
let digits_in: usize = 1;
let mut ct_gglwe_s0s1: GLWESwitchingKey<Vec<u8>, FFT64> = GLWESwitchingKey::alloc(
&module,
basek,
k_in,
rows,
digits_in,
rank_in_s0s1,
rank_out_s0s1,
);
let mut ct_gglwe_s1s2: GLWESwitchingKey<Vec<u8>, FFT64> = GLWESwitchingKey::alloc(
&module,
basek,
k_ksk,
rows,
digits,
rank_out_s0s1,
rank_out_s1s2,
);
let mut ct_gglwe_s0s2: GLWESwitchingKey<Vec<u8>, FFT64> = GLWESwitchingKey::alloc(
&module,
basek,
k_out,
rows,
digits_in,
rank_in_s0s1,
rank_out_s1s2,
);
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]);
let mut scratch: ScratchOwned = ScratchOwned::new(
GLWESwitchingKey::encrypt_sk_scratch_space(&module, basek, k_ksk, rank_in_s0s1 | rank_out_s0s1)
| FourierGLWECiphertext::decrypt_scratch_space(&module, basek, k_out)
| GLWESwitchingKey::keyswitch_scratch_space(
&module,
basek,
k_out,
k_in,
k_ksk,
digits,
ct_gglwe_s1s2.rank_in(),
ct_gglwe_s1s2.rank_out(),
),
);
let mut sk0: GLWESecret<Vec<u8>> = GLWESecret::alloc(&module, rank_in_s0s1);
sk0.fill_ternary_prob(0.5, &mut source_xs);
let mut sk1: GLWESecret<Vec<u8>> = GLWESecret::alloc(&module, rank_out_s0s1);
sk1.fill_ternary_prob(0.5, &mut source_xs);
let sk1_dft: FourierGLWESecret<Vec<u8>, FFT64> = FourierGLWESecret::from(&module, &sk1);
let mut sk2: GLWESecret<Vec<u8>> = GLWESecret::alloc(&module, rank_out_s1s2);
sk2.fill_ternary_prob(0.5, &mut source_xs);
let sk2_dft: FourierGLWESecret<Vec<u8>, FFT64> = FourierGLWESecret::from(&module, &sk2);
// gglwe_{s1}(s0) = s0 -> s1
ct_gglwe_s0s1.generate_from_sk(
&module,
&sk0,
&sk1_dft,
&mut source_xa,
&mut source_xe,
sigma,
scratch.borrow(),
);
// gglwe_{s2}(s1) -> s1 -> s2
ct_gglwe_s1s2.generate_from_sk(
&module,
&sk1,
&sk2_dft,
&mut source_xa,
&mut source_xe,
sigma,
scratch.borrow(),
);
// gglwe_{s1}(s0) (x) gglwe_{s2}(s1) = gglwe_{s2}(s0)
ct_gglwe_s0s2.keyswitch(&module, &ct_gglwe_s0s1, &ct_gglwe_s1s2, scratch.borrow());
let mut ct_glwe_dft: FourierGLWECiphertext<Vec<u8>, FFT64> =
FourierGLWECiphertext::alloc(&module, basek, k_out, rank_out_s1s2);
let mut pt: GLWEPlaintext<Vec<u8>> = GLWEPlaintext::alloc(&module, basek, k_out);
(0..ct_gglwe_s0s2.rank_in()).for_each(|col_i| {
(0..ct_gglwe_s0s2.rows()).for_each(|row_i| {
ct_gglwe_s0s2.get_row(&module, row_i, col_i, &mut ct_glwe_dft);
ct_glwe_dft.decrypt(&module, &mut pt, &sk2_dft, scratch.borrow());
module.vec_znx_sub_scalar_inplace(
&mut pt.data,
0,
(digits_in - 1) + row_i * digits_in,
&sk0.data,
col_i,
);
let noise_have: f64 = pt.data.std(0, basek).log2();
let noise_want: f64 = log2_std_noise_gglwe_product(
module.n() as f64,
basek * digits,
0.5,
0.5,
0f64,
sigma * sigma,
0f64,
rank_out_s0s1 as f64,
k_in,
k_ksk,
);
assert!(
(noise_have - noise_want).abs() <= 1.0,
"{} {}",
noise_have,
noise_want
);
});
});
}
fn test_key_switch_inplace(
log_n: usize,
basek: usize,
k_ct: usize,
k_ksk: usize,
digits: usize,
rank_in: usize,
rank_out: usize,
sigma: f64,
) {
let module: Module<FFT64> = Module::<FFT64>::new(1 << log_n);
let rows: usize = k_ct.div_ceil(basek * digits);
let digits_in: usize = 1;
let mut ct_gglwe_s0s1: GLWESwitchingKey<Vec<u8>, FFT64> =
GLWESwitchingKey::alloc(&module, basek, k_ct, rows, digits_in, rank_in, rank_out);
let mut ct_gglwe_s1s2: GLWESwitchingKey<Vec<u8>, FFT64> =
GLWESwitchingKey::alloc(&module, basek, k_ksk, rows, digits, rank_out, rank_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]);
let mut scratch: ScratchOwned = ScratchOwned::new(
GLWESwitchingKey::encrypt_sk_scratch_space(&module, basek, k_ksk, rank_out)
| FourierGLWECiphertext::decrypt_scratch_space(&module, basek, k_ksk)
| GLWESwitchingKey::keyswitch_inplace_scratch_space(&module, basek, k_ct, k_ksk, digits, rank_out),
);
let mut sk0: GLWESecret<Vec<u8>> = GLWESecret::alloc(&module, rank_in);
sk0.fill_ternary_prob(0.5, &mut source_xs);
let mut sk1: GLWESecret<Vec<u8>> = GLWESecret::alloc(&module, rank_out);
sk1.fill_ternary_prob(0.5, &mut source_xs);
let sk1_dft: FourierGLWESecret<Vec<u8>, FFT64> = FourierGLWESecret::from(&module, &sk1);
let mut sk2: GLWESecret<Vec<u8>> = GLWESecret::alloc(&module, rank_out);
sk2.fill_ternary_prob(0.5, &mut source_xs);
let sk2_dft: FourierGLWESecret<Vec<u8>, FFT64> = FourierGLWESecret::from(&module, &sk2);
// gglwe_{s1}(s0) = s0 -> s1
ct_gglwe_s0s1.generate_from_sk(
&module,
&sk0,
&sk1_dft,
&mut source_xa,
&mut source_xe,
sigma,
scratch.borrow(),
);
// gglwe_{s2}(s1) -> s1 -> s2
ct_gglwe_s1s2.generate_from_sk(
&module,
&sk1,
&sk2_dft,
&mut source_xa,
&mut source_xe,
sigma,
scratch.borrow(),
);
// gglwe_{s1}(s0) (x) gglwe_{s2}(s1) = gglwe_{s2}(s0)
ct_gglwe_s0s1.keyswitch_inplace(&module, &ct_gglwe_s1s2, scratch.borrow());
let ct_gglwe_s0s2: GLWESwitchingKey<Vec<u8>, FFT64> = ct_gglwe_s0s1;
let mut ct_glwe_dft: FourierGLWECiphertext<Vec<u8>, FFT64> = FourierGLWECiphertext::alloc(&module, basek, k_ct, rank_out);
let mut pt: GLWEPlaintext<Vec<u8>> = GLWEPlaintext::alloc(&module, basek, k_ct);
(0..ct_gglwe_s0s2.rank_in()).for_each(|col_i| {
(0..ct_gglwe_s0s2.rows()).for_each(|row_i| {
ct_gglwe_s0s2.get_row(&module, row_i, col_i, &mut ct_glwe_dft);
ct_glwe_dft.decrypt(&module, &mut pt, &sk2_dft, scratch.borrow());
module.vec_znx_sub_scalar_inplace(
&mut pt.data,
0,
(digits_in - 1) + row_i * digits_in,
&sk0.data,
col_i,
);
let noise_have: f64 = pt.data.std(0, basek).log2();
let noise_want: f64 = log2_std_noise_gglwe_product(
module.n() as f64,
basek * digits,
0.5,
0.5,
0f64,
sigma * sigma,
0f64,
rank_out as f64,
k_ct,
k_ksk,
);
assert!(
(noise_have - noise_want).abs() <= 1.0,
"{} {}",
noise_have,
noise_want
);
});
});
}
fn test_external_product(
log_n: usize,
basek: usize,
k_out: usize,
k_in: usize,
k_ggsw: usize,
digits: usize,
rank_in: usize,
rank_out: usize,
sigma: f64,
) {
let module: Module<FFT64> = Module::<FFT64>::new(1 << log_n);
let rows: usize = k_in.div_ceil(basek * digits);
let digits_in: usize = 1;
let mut ct_gglwe_in: GLWESwitchingKey<Vec<u8>, FFT64> =
GLWESwitchingKey::alloc(&module, basek, k_in, rows, digits_in, rank_in, rank_out);
let mut ct_gglwe_out: GLWESwitchingKey<Vec<u8>, FFT64> =
GLWESwitchingKey::alloc(&module, basek, k_out, rows, digits_in, rank_in, rank_out);
let mut ct_rgsw: GGSWCiphertext<Vec<u8>, FFT64> = GGSWCiphertext::alloc(&module, basek, k_ggsw, rows, digits, rank_out);
let mut pt_rgsw: ScalarZnx<Vec<u8>> = module.new_scalar_znx(1);
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]);
let mut scratch: ScratchOwned = ScratchOwned::new(
GLWESwitchingKey::encrypt_sk_scratch_space(&module, basek, k_in, rank_out)
| FourierGLWECiphertext::decrypt_scratch_space(&module, basek, k_out)
| GLWESwitchingKey::external_product_scratch_space(&module, basek, k_out, k_in, k_ggsw, digits, rank_out)
| GGSWCiphertext::encrypt_sk_scratch_space(&module, basek, k_ggsw, rank_out),
);
let r: usize = 1;
pt_rgsw.to_mut().raw_mut()[r] = 1; // X^{r}
let mut sk_in: GLWESecret<Vec<u8>> = GLWESecret::alloc(&module, rank_in);
sk_in.fill_ternary_prob(0.5, &mut source_xs);
let mut sk_out: GLWESecret<Vec<u8>> = GLWESecret::alloc(&module, rank_out);
sk_out.fill_ternary_prob(0.5, &mut source_xs);
let sk_out_dft: FourierGLWESecret<Vec<u8>, FFT64> = FourierGLWESecret::from(&module, &sk_out);
// gglwe_{s1}(s0) = s0 -> s1
ct_gglwe_in.generate_from_sk(
&module,
&sk_in,
&sk_out_dft,
&mut source_xa,
&mut source_xe,
sigma,
scratch.borrow(),
);
ct_rgsw.encrypt_sk(
&module,
&pt_rgsw,
&sk_out_dft,
&mut source_xa,
&mut source_xe,
sigma,
scratch.borrow(),
);
// gglwe_(m) (x) RGSW_(X^k) = gglwe_(m * X^k)
ct_gglwe_out.external_product(&module, &ct_gglwe_in, &ct_rgsw, scratch.borrow());
let mut ct_glwe_dft: FourierGLWECiphertext<Vec<u8>, FFT64> = FourierGLWECiphertext::alloc(&module, basek, k_out, rank_out);
let mut pt: GLWEPlaintext<Vec<u8>> = GLWEPlaintext::alloc(&module, basek, k_out);
(0..rank_in).for_each(|i| {
module.vec_znx_rotate_inplace(r as i64, &mut sk_in.data, i); // * X^{r}
});
(0..rank_in).for_each(|col_i| {
(0..ct_gglwe_out.rows()).for_each(|row_i| {
ct_gglwe_out.get_row(&module, row_i, col_i, &mut ct_glwe_dft);
ct_glwe_dft.decrypt(&module, &mut pt, &sk_out_dft, scratch.borrow());
module.vec_znx_sub_scalar_inplace(
&mut pt.data,
0,
(digits_in - 1) + row_i * digits_in,
&sk_in.data,
col_i,
);
let noise_have: f64 = pt.data.std(0, basek).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_ggsw_product(
module.n() as f64,
basek * digits,
0.5,
var_msg,
var_a0_err,
var_a1_err,
var_gct_err_lhs,
var_gct_err_rhs,
rank_out as f64,
k_in,
k_ggsw,
);
assert!(
(noise_have - noise_want).abs() <= 1.0,
"{} {}",
noise_have,
noise_want
);
});
});
}
fn test_external_product_inplace(
log_n: usize,
basek: usize,
k_ct: usize,
k_ggsw: usize,
digits: usize,
rank_in: usize,
rank_out: usize,
sigma: f64,
) {
let module: Module<FFT64> = Module::<FFT64>::new(1 << log_n);
let rows: usize = k_ct.div_ceil(basek * digits);
let digits_in: usize = 1;
let mut ct_gglwe: GLWESwitchingKey<Vec<u8>, FFT64> =
GLWESwitchingKey::alloc(&module, basek, k_ct, rows, digits_in, rank_in, rank_out);
let mut ct_rgsw: GGSWCiphertext<Vec<u8>, FFT64> = GGSWCiphertext::alloc(&module, basek, k_ggsw, rows, digits, rank_out);
let mut pt_rgsw: ScalarZnx<Vec<u8>> = module.new_scalar_znx(1);
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]);
let mut scratch: ScratchOwned = ScratchOwned::new(
GLWESwitchingKey::encrypt_sk_scratch_space(&module, basek, k_ct, rank_out)
| FourierGLWECiphertext::decrypt_scratch_space(&module, basek, k_ct)
| GLWESwitchingKey::external_product_inplace_scratch_space(&module, basek, k_ct, k_ggsw, digits, rank_out)
| GGSWCiphertext::encrypt_sk_scratch_space(&module, basek, k_ggsw, rank_out),
);
let r: usize = 1;
pt_rgsw.to_mut().raw_mut()[r] = 1; // X^{r}
let mut sk_in: GLWESecret<Vec<u8>> = GLWESecret::alloc(&module, rank_in);
sk_in.fill_ternary_prob(0.5, &mut source_xs);
let mut sk_out: GLWESecret<Vec<u8>> = GLWESecret::alloc(&module, rank_out);
sk_out.fill_ternary_prob(0.5, &mut source_xs);
let sk_out_dft: FourierGLWESecret<Vec<u8>, FFT64> = FourierGLWESecret::from(&module, &sk_out);
// gglwe_{s1}(s0) = s0 -> s1
ct_gglwe.generate_from_sk(
&module,
&sk_in,
&sk_out_dft,
&mut source_xa,
&mut source_xe,
sigma,
scratch.borrow(),
);
ct_rgsw.encrypt_sk(
&module,
&pt_rgsw,
&sk_out_dft,
&mut source_xa,
&mut source_xe,
sigma,
scratch.borrow(),
);
// gglwe_(m) (x) RGSW_(X^k) = gglwe_(m * X^k)
ct_gglwe.external_product_inplace(&module, &ct_rgsw, scratch.borrow());
let mut ct_glwe_dft: FourierGLWECiphertext<Vec<u8>, FFT64> = FourierGLWECiphertext::alloc(&module, basek, k_ct, rank_out);
let mut pt: GLWEPlaintext<Vec<u8>> = GLWEPlaintext::alloc(&module, basek, k_ct);
(0..rank_in).for_each(|i| {
module.vec_znx_rotate_inplace(r as i64, &mut sk_in.data, i); // * X^{r}
});
(0..rank_in).for_each(|col_i| {
(0..ct_gglwe.rows()).for_each(|row_i| {
ct_gglwe.get_row(&module, row_i, col_i, &mut ct_glwe_dft);
ct_glwe_dft.decrypt(&module, &mut pt, &sk_out_dft, scratch.borrow());
module.vec_znx_sub_scalar_inplace(
&mut pt.data,
0,
(digits_in - 1) + row_i * digits_in,
&sk_in.data,
col_i,
);
let noise_have: f64 = pt.data.std(0, basek).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_ggsw_product(
module.n() as f64,
basek * digits,
0.5,
var_msg,
var_a0_err,
var_a1_err,
var_gct_err_lhs,
var_gct_err_rhs,
rank_out as f64,
k_ct,
k_ggsw,
);
assert!(
(noise_have - noise_want).abs() <= 1.0,
"{} {}",
noise_have,
noise_want
);
});
});
}

3
core/src/gglwe/test_fft64/mod.rs Normal file
View File

@@ -0,0 +1,3 @@
pub mod automorphism_key;
pub mod gglwe;
pub mod tensor_key;

69
core/src/gglwe/test_fft64/tensor_key.rs Normal file
View File

@@ -0,0 +1,69 @@
use backend::{FFT64, Module, ScalarZnxDftOps, ScratchOwned, Stats, VecZnxOps};
use sampling::source::Source;
use crate::{FourierGLWECiphertext, FourierGLWESecret, GLWEPlaintext, GLWESecret, GLWETensorKey, GetRow, Infos};
#[test]
fn encrypt_sk() {
let log_n: usize = 8;
(1..4).for_each(|rank| {
println!("test encrypt_sk rank: {}", rank);
test_encrypt_sk(log_n, 16, 54, 3.2, rank);
});
}
fn test_encrypt_sk(log_n: usize, basek: usize, k: usize, sigma: f64, rank: usize) {
let module: Module<FFT64> = Module::<FFT64>::new(1 << log_n);
let rows: usize = k / basek;
let mut tensor_key: GLWETensorKey<Vec<u8>, FFT64> = GLWETensorKey::alloc(&module, basek, k, rows, 1, rank);
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]);
let mut scratch: ScratchOwned = ScratchOwned::new(GLWETensorKey::generate_from_sk_scratch_space(
&module,
basek,
tensor_key.k(),
rank,
));
let mut sk: GLWESecret<Vec<u8>> = GLWESecret::alloc(&module, rank);
sk.fill_ternary_prob(0.5, &mut source_xs);
let sk_dft: FourierGLWESecret<Vec<u8>, FFT64> = FourierGLWESecret::from(&module, &sk);
tensor_key.generate_from_sk(
&module,
&sk_dft,
&mut source_xa,
&mut source_xe,
sigma,
scratch.borrow(),
);
let mut ct_glwe_fourier: FourierGLWECiphertext<Vec<u8>, FFT64> = FourierGLWECiphertext::alloc(&module, basek, k, rank);
let mut pt: GLWEPlaintext<Vec<u8>> = GLWEPlaintext::alloc(&module, basek, k);
let mut sk_ij_dft: FourierGLWESecret<Vec<u8>, FFT64> = FourierGLWESecret::alloc(&module, 1);
let mut sk_ij: GLWESecret<Vec<u8>> = GLWESecret::alloc(&module, 1);
(0..rank).for_each(|i| {
(0..rank).for_each(|j| {
module.svp_apply(&mut sk_ij_dft.data, 0, &sk_dft.data, i, &sk_dft.data, j);
module.scalar_znx_idft(&mut sk_ij.data, 0, &sk_ij_dft.data, 0, scratch.borrow());
(0..tensor_key.rank_in()).for_each(|col_i| {
(0..tensor_key.rows()).for_each(|row_i| {
tensor_key
.at(i, j)
.get_row(&module, row_i, col_i, &mut ct_glwe_fourier);
ct_glwe_fourier.decrypt(&module, &mut pt, &sk_dft, scratch.borrow());
module.vec_znx_sub_scalar_inplace(&mut pt.data, 0, row_i, &sk_ij.data, col_i);
let std_pt: f64 = pt.data.std(0, basek) * (k as f64).exp2();
assert!((sigma - std_pt).abs() <= 0.5, "{} {}", sigma, std_pt);
});
});
})
})
}