updated repo for publishing (#74)

poulpy-core/src/tests/generics/trace.rs

@@ -0,0 +1,168 @@
+use std::collections::HashMap;
+
+use poulpy_backend::hal::{
+    api::{
+        ScratchOwnedAlloc, ScratchOwnedBorrow, SvpApplyInplace, SvpPPolAlloc, SvpPPolAllocBytes, SvpPrepare, VecZnxAddInplace,
+        VecZnxAddNormal, VecZnxAddScalarInplace, VecZnxAutomorphism, VecZnxBigAddInplace, VecZnxBigAddSmallInplace,
+        VecZnxBigAllocBytes, VecZnxBigAutomorphismInplace, VecZnxBigNormalize, VecZnxBigNormalizeTmpBytes,
+        VecZnxBigSubSmallBInplace, VecZnxCopy, VecZnxDftAllocBytes, VecZnxDftFromVecZnx, VecZnxDftToVecZnxBigConsume,
+        VecZnxFillUniform, VecZnxNormalize, VecZnxNormalizeInplace, VecZnxNormalizeTmpBytes, VecZnxRotateInplace,
+        VecZnxRshInplace, VecZnxSub, VecZnxSubABInplace, VecZnxSwithcDegree, VmpApply, VmpApplyAdd, VmpApplyTmpBytes,
+        VmpPMatAlloc, VmpPrepare, ZnxView, ZnxViewMut,
+    },
+    layouts::{Backend, Module, ScratchOwned},
+    oep::{
+        ScratchAvailableImpl, ScratchOwnedAllocImpl, ScratchOwnedBorrowImpl, TakeScalarZnxImpl, TakeSvpPPolImpl,
+        TakeVecZnxBigImpl, TakeVecZnxDftImpl, TakeVecZnxImpl,
+    },
+    source::Source,
+};
+
+use crate::{
+    layouts::{
+        GGLWEAutomorphismKey, GLWECiphertext, GLWEPlaintext, GLWESecret, Infos,
+        prepared::{GGLWEAutomorphismKeyPrepared, GLWESecretPrepared, PrepareAlloc},
+    },
+    noise::var_noise_gglwe_product,
+};
+
+pub fn test_glwe_trace_inplace<B>(module: &Module<B>, basek: usize, k: usize, sigma: f64, rank: usize)
+where
+    Module<B>: VecZnxDftAllocBytes
+        + VecZnxAutomorphism
+        + VecZnxBigAutomorphismInplace<B>
+        + VecZnxBigSubSmallBInplace<B>
+        + VecZnxRshInplace
+        + VecZnxRotateInplace
+        + VecZnxBigNormalize<B>
+        + VecZnxDftFromVecZnx<B>
+        + SvpApplyInplace<B>
+        + VecZnxDftToVecZnxBigConsume<B>
+        + VecZnxFillUniform
+        + VecZnxSubABInplace
+        + VecZnxAddInplace
+        + VecZnxNormalizeInplace<B>
+        + VecZnxAddNormal
+        + VecZnxNormalize<B>
+        + VecZnxSub
+        + SvpPrepare<B>
+        + SvpPPolAllocBytes
+        + SvpPPolAlloc<B>
+        + VecZnxBigAllocBytes
+        + VecZnxBigAddInplace<B>
+        + VecZnxBigAddSmallInplace<B>
+        + VecZnxNormalizeTmpBytes
+        + VecZnxAddScalarInplace
+        + VmpPMatAlloc<B>
+        + VmpPrepare<B>
+        + VmpApplyTmpBytes
+        + VmpApply<B>
+        + VmpApplyAdd<B>
+        + VecZnxBigNormalizeTmpBytes
+        + VecZnxSwithcDegree
+        + VecZnxCopy,
+    B: Backend
+        + TakeVecZnxDftImpl<B>
+        + TakeVecZnxBigImpl<B>
+        + TakeSvpPPolImpl<B>
+        + ScratchOwnedAllocImpl<B>
+        + ScratchOwnedBorrowImpl<B>
+        + ScratchAvailableImpl<B>
+        + TakeScalarZnxImpl<B>
+        + TakeVecZnxImpl<B>,
+{
+    let n: usize = module.n();
+    let k_autokey: usize = k + basek;
+
+    let digits: usize = 1;
+    let rows: usize = k.div_ceil(basek * digits);
+
+    let mut ct: GLWECiphertext<Vec<u8>> = GLWECiphertext::alloc(n, basek, k, rank);
+    let mut pt_want: GLWEPlaintext<Vec<u8>> = GLWEPlaintext::alloc(n, basek, k);
+    let mut pt_have: GLWEPlaintext<Vec<u8>> = GLWEPlaintext::alloc(n, basek, k);
+
+    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<B> = ScratchOwned::alloc(
+        GLWECiphertext::encrypt_sk_scratch_space(module, n, basek, ct.k())
+            | GLWECiphertext::decrypt_scratch_space(module, n, basek, ct.k())
+            | GGLWEAutomorphismKey::encrypt_sk_scratch_space(module, n, basek, k_autokey, rank)
+            | GLWECiphertext::trace_inplace_scratch_space(module, n, basek, ct.k(), k_autokey, digits, rank),
+    );
+
+    let mut sk: GLWESecret<Vec<u8>> = GLWESecret::alloc(n, rank);
+    sk.fill_ternary_prob(0.5, &mut source_xs);
+    let sk_dft: GLWESecretPrepared<Vec<u8>, B> = sk.prepare_alloc(module, scratch.borrow());
+
+    let mut data_want: Vec<i64> = vec![0i64; n];
+
+    data_want
+        .iter_mut()
+        .for_each(|x| *x = source_xa.next_i64() & 0xFF);
+
+    module.vec_znx_fill_uniform(basek, &mut pt_have.data, 0, k, &mut source_xa);
+
+    ct.encrypt_sk(
+        module,
+        &pt_have,
+        &sk_dft,
+        &mut source_xa,
+        &mut source_xe,
+        sigma,
+        scratch.borrow(),
+    );
+
+    let mut auto_keys: HashMap<i64, GGLWEAutomorphismKeyPrepared<Vec<u8>, B>> = HashMap::new();
+    let gal_els: Vec<i64> = GLWECiphertext::trace_galois_elements(module);
+    let mut tmp: GGLWEAutomorphismKey<Vec<u8>> = GGLWEAutomorphismKey::alloc(n, basek, k_autokey, rows, digits, rank);
+    gal_els.iter().for_each(|gal_el| {
+        tmp.encrypt_sk(
+            module,
+            *gal_el,
+            &sk,
+            &mut source_xa,
+            &mut source_xe,
+            sigma,
+            scratch.borrow(),
+        );
+        let atk_prepared: GGLWEAutomorphismKeyPrepared<Vec<u8>, B> = tmp.prepare_alloc(module, scratch.borrow());
+        auto_keys.insert(*gal_el, atk_prepared);
+    });
+
+    ct.trace_inplace(module, 0, 5, &auto_keys, scratch.borrow());
+    ct.trace_inplace(module, 5, module.log_n(), &auto_keys, scratch.borrow());
+
+    (0..pt_want.size()).for_each(|i| pt_want.data.at_mut(0, i)[0] = pt_have.data.at(0, i)[0]);
+
+    ct.decrypt(module, &mut pt_have, &sk_dft, scratch.borrow());
+
+    module.vec_znx_sub_ab_inplace(&mut pt_want.data, 0, &pt_have.data, 0);
+    module.vec_znx_normalize_inplace(basek, &mut pt_want.data, 0, scratch.borrow());
+
+    let noise_have: f64 = pt_want.std().log2();
+
+    let mut noise_want: f64 = var_noise_gglwe_product(
+        n as f64,
+        basek,
+        0.5,
+        0.5,
+        1.0 / 12.0,
+        sigma * sigma,
+        0.0,
+        rank as f64,
+        k,
+        k_autokey,
+    );
+    noise_want += sigma * sigma * (-2.0 * (k) as f64).exp2();
+    noise_want += n as f64 * 1.0 / 12.0 * 0.5 * rank as f64 * (-2.0 * (k) as f64).exp2();
+    noise_want = noise_want.sqrt().log2();
+
+    assert!(
+        (noise_have - noise_want).abs() < 1.0,
+        "{} > {}",
+        noise_have,
+        noise_want
+    );
+}