use poulpy_hal::{
api::{ScratchOwnedAlloc, ScratchOwnedBorrow, VecZnxAutomorphismAssignBackend, VecZnxFillUniformSourceBackend},
layouts::{Module, ScratchOwned},
source::Source,
test_suite::TestParams,
test_suite::vec_znx_backend_mut,
};
use crate::{
EncryptionLayout, GLWEAutomorphism, GLWEAutomorphismKeyEncryptSk, GLWEDecrypt, GLWEEncryptSk, GLWENoise, GLWENormalize,
ScratchArenaTakeCore,
encryption::DEFAULT_SIGMA_XE,
layouts::{
GLWE, GLWEAutomorphismKey, GLWEAutomorphismKeyLayout, GLWEAutomorphismKeyPreparedFactory, GLWELayout, GLWEPlaintext,
GLWESecret, GLWESecretPreparedFactory, LWEInfos, ModuleCoreAlloc,
prepared::{GLWEAutomorphismKeyPrepared, GLWESecretPrepared},
},
var_noise_gglwe_product_v2,
};
pub fn test_glwe_automorphism<BE: crate::test_suite::TestBackend>(params: &TestParams, module: &Module<BE>)
where
BE::OwnedBuf: poulpy_hal::layouts::HostDataMut,
for<'a> BE::BufRef<'a>: poulpy_hal::layouts::HostDataRef,
for<'a> BE::BufMut<'a>: poulpy_hal::layouts::HostDataMut,
Module<BE>: GLWEEncryptSk<BE>
+ GLWESecretPreparedFactory<BE>
+ VecZnxFillUniformSourceBackend<BE>
+ GLWEDecrypt<BE>
+ GLWEAutomorphism<BE>
+ GLWEAutomorphismKeyEncryptSk<BE>
+ GLWEAutomorphismKeyPreparedFactory<BE>
+ GLWENoise<BE>
+ VecZnxAutomorphismAssignBackend<BE>
+ GLWENormalize<BE>,
ScratchOwned<BE>: ScratchOwnedAlloc<BE> + ScratchOwnedBorrow<BE>,
for<'a> poulpy_hal::layouts::ScratchArena<'a, BE>: ScratchArenaTakeCore<'a, BE>,
{
let base2k: usize = params.base2k;
let in_base2k: usize = base2k - 1;
let key_base2k: usize = base2k;
let out_base2k: usize = base2k - 2;
let k_in: usize = 4 * in_base2k + 1;
let max_dsize: usize = k_in.div_ceil(key_base2k);
let p: i64 = -5;
for rank in 1_usize..3 {
for dsize in 1..max_dsize + 1 {
let k_ksk: usize = k_in + key_base2k * dsize;
let k_out: usize = k_ksk;
let n: usize = module.n();
let dnum: usize = k_in.div_ceil(key_base2k * dsize);
let ct_in_infos = EncryptionLayout::new_from_default_sigma(GLWELayout {
n: n.into(),
base2k: in_base2k.into(),
k: k_in.into(),
rank: rank.into(),
})
.unwrap();
let ct_out_infos: GLWELayout = GLWELayout {
n: n.into(),
base2k: out_base2k.into(),
k: k_out.into(),
rank: rank.into(),
};
let autokey_infos = EncryptionLayout::new_from_default_sigma(GLWEAutomorphismKeyLayout {
n: n.into(),
base2k: key_base2k.into(),
k: k_out.into(),
rank: rank.into(),
dnum: dnum.into(),
dsize: dsize.into(),
})
.unwrap();
let mut autokey: GLWEAutomorphismKey<Vec<u8>> = module.glwe_automorphism_key_alloc_from_infos(&autokey_infos);
let mut ct_in: GLWE<Vec<u8>> = module.glwe_alloc_from_infos(&ct_in_infos);
let mut ct_out: GLWE<Vec<u8>> = module.glwe_alloc_from_infos(&ct_out_infos);
let mut pt_in: GLWEPlaintext<Vec<u8>> = module.glwe_plaintext_alloc_from_infos(&ct_in_infos);
let mut pt_out: GLWEPlaintext<Vec<u8>> = module.glwe_plaintext_alloc_from_infos(&ct_out_infos);
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]);
module.vec_znx_fill_uniform_source_backend(
in_base2k,
&mut vec_znx_backend_mut::<BE>(&mut pt_in.data),
0,
&mut source_xa,
);
let mut scratch: ScratchOwned<BE> = ScratchOwned::alloc(
(module).glwe_automorphism_key_encrypt_sk_tmp_bytes(&autokey)
| (module).glwe_decrypt_tmp_bytes(&ct_out)
| (module).glwe_encrypt_sk_tmp_bytes(&ct_in)
| module.glwe_automorphism_tmp_bytes(&ct_out, &ct_in, &autokey),
);
let mut sk: GLWESecret<Vec<u8>> = module.glwe_secret_alloc_from_infos(&ct_out);
sk.fill_ternary_prob(0.5, &mut source_xs);
let mut sk_prepared: GLWESecretPrepared<BE::OwnedBuf, BE> = module.glwe_secret_prepared_alloc_from_infos(&sk);
module.glwe_secret_prepare(&mut sk_prepared, &sk);
module.glwe_automorphism_key_encrypt_sk(
&mut autokey,
p,
&sk,
&autokey_infos,
&mut source_xe,
&mut source_xa,
&mut crate::test_suite::scratch_host_arena(&mut scratch),
);
module.glwe_encrypt_sk(
&mut ct_in,
&pt_in,
&sk_prepared,
&ct_in_infos,
&mut source_xe,
&mut source_xa,
&mut scratch.borrow(),
);
let mut autokey_prepared: GLWEAutomorphismKeyPrepared<BE::OwnedBuf, BE> =
module.glwe_automorphism_key_prepared_alloc_from_infos(&autokey_infos);
module.glwe_automorphism_key_prepare(&mut autokey_prepared, &autokey, &mut scratch.borrow());
module.glwe_automorphism(
&mut ct_out,
&ct_in,
&autokey_prepared,
autokey_prepared.size(),
&mut scratch.borrow(),
);
let max_noise: f64 = var_noise_gglwe_product_v2(
module.n() as f64,
k_ksk,
dnum,
max_dsize,
key_base2k,
0.5,
0.5,
0f64,
DEFAULT_SIGMA_XE * DEFAULT_SIGMA_XE,
0f64,
rank as f64,
)
.sqrt()
.log2();
module.glwe_normalize(&mut pt_out, &pt_in, &mut scratch.borrow());
module.vec_znx_automorphism_assign_backend(
p,
&mut vec_znx_backend_mut::<BE>(&mut pt_out.data),
0,
&mut scratch.borrow(),
);
assert!(
module
.glwe_noise(&ct_out, &pt_out, &sk_prepared, &mut scratch.borrow())
.std()
.log2()
<= max_noise + 1.0
)
}
}
}
#[allow(clippy::too_many_arguments)]
pub fn test_glwe_automorphism_assign<BE: crate::test_suite::TestBackend>(params: &TestParams, module: &Module<BE>)
where
BE::OwnedBuf: poulpy_hal::layouts::HostDataMut,
for<'a> BE::BufRef<'a>: poulpy_hal::layouts::HostDataRef,
for<'a> BE::BufMut<'a>: poulpy_hal::layouts::HostDataMut,
Module<BE>: GLWEEncryptSk<BE>
+ GLWESecretPreparedFactory<BE>
+ VecZnxFillUniformSourceBackend<BE>
+ GLWEDecrypt<BE>
+ GLWEAutomorphism<BE>
+ GLWEAutomorphismKeyEncryptSk<BE>
+ GLWEAutomorphismKeyPreparedFactory<BE>
+ GLWENoise<BE>
+ VecZnxAutomorphismAssignBackend<BE>,
ScratchOwned<BE>: ScratchOwnedAlloc<BE> + ScratchOwnedBorrow<BE>,
for<'a> poulpy_hal::layouts::ScratchArena<'a, BE>: ScratchArenaTakeCore<'a, BE>,
{
let base2k: usize = params.base2k;
let out_base2k: usize = base2k - 1;
let key_base2k: usize = base2k;
let k_out: usize = 4 * out_base2k + 1;
let max_dsize: usize = k_out.div_ceil(key_base2k);
let p: i64 = -5;
for rank in 1_usize..3 {
for dsize in 1..max_dsize + 1 {
let k_ksk: usize = k_out + key_base2k * dsize;
let n: usize = module.n();
let dnum: usize = k_out.div_ceil(key_base2k * dsize);
let ct_out_infos = EncryptionLayout::new_from_default_sigma(GLWELayout {
n: n.into(),
base2k: out_base2k.into(),
k: k_out.into(),
rank: rank.into(),
})
.unwrap();
let autokey_infos = EncryptionLayout::new_from_default_sigma(GLWEAutomorphismKeyLayout {
n: n.into(),
base2k: key_base2k.into(),
k: k_ksk.into(),
rank: rank.into(),
dnum: dnum.into(),
dsize: dsize.into(),
})
.unwrap();
let mut autokey: GLWEAutomorphismKey<Vec<u8>> = module.glwe_automorphism_key_alloc_from_infos(&autokey_infos);
let mut ct: GLWE<Vec<u8>> = module.glwe_alloc_from_infos(&ct_out_infos);
let mut pt_want: GLWEPlaintext<Vec<u8>> = module.glwe_plaintext_alloc_from_infos(&ct_out_infos);
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]);
module.vec_znx_fill_uniform_source_backend(
out_base2k,
&mut vec_znx_backend_mut::<BE>(&mut pt_want.data),
0,
&mut source_xa,
);
let mut scratch: ScratchOwned<BE> = ScratchOwned::alloc(
(module).glwe_automorphism_key_encrypt_sk_tmp_bytes(&autokey)
| (module).glwe_decrypt_tmp_bytes(&ct)
| (module).glwe_encrypt_sk_tmp_bytes(&ct)
| module.glwe_automorphism_tmp_bytes(&ct, &ct, &autokey),
);
let mut sk: GLWESecret<Vec<u8>> = module.glwe_secret_alloc_from_infos(&ct);
sk.fill_ternary_prob(0.5, &mut source_xs);
let mut sk_prepared: GLWESecretPrepared<BE::OwnedBuf, BE> = module.glwe_secret_prepared_alloc_from_infos(&sk);
module.glwe_secret_prepare(&mut sk_prepared, &sk);
module.glwe_automorphism_key_encrypt_sk(
&mut autokey,
p,
&sk,
&autokey_infos,
&mut source_xe,
&mut source_xa,
&mut crate::test_suite::scratch_host_arena(&mut scratch),
);
module.glwe_encrypt_sk(
&mut ct,
&pt_want,
&sk_prepared,
&ct_out_infos,
&mut source_xe,
&mut source_xa,
&mut scratch.borrow(),
);
let mut autokey_prepared: GLWEAutomorphismKeyPrepared<BE::OwnedBuf, BE> =
module.glwe_automorphism_key_prepared_alloc_from_infos(&autokey);
module.glwe_automorphism_key_prepare(&mut autokey_prepared, &autokey, &mut scratch.borrow());
module.glwe_automorphism_assign(&mut ct, &autokey_prepared, autokey_prepared.size(), &mut scratch.borrow());
let max_noise: f64 = var_noise_gglwe_product_v2(
module.n() as f64,
k_ksk,
dnum,
dsize,
key_base2k,
0.5,
0.5,
0f64,
DEFAULT_SIGMA_XE * DEFAULT_SIGMA_XE,
0f64,
rank as f64,
)
.sqrt()
.log2();
module.vec_znx_automorphism_assign_backend(
p,
&mut vec_znx_backend_mut::<BE>(&mut pt_want.data),
0,
&mut scratch.borrow(),
);
assert!(
module
.glwe_noise(&ct, &pt_want, &sk_prepared, &mut scratch.borrow())
.std()
.log2()
<= max_noise + 1.0
)
}
}
}