Add test for ggsw scalar blind rotation

poulpy-schemes/src/tfhe/bdd_arithmetic/tests/fft64_ref.rs

@@ -3,7 +3,7 @@ use poulpy_backend::FFT64Ref;
 use crate::tfhe::{
     bdd_arithmetic::tests::test_suite::{
         test_bdd_add, test_bdd_and, test_bdd_or, test_bdd_prepare, test_bdd_sll, test_bdd_slt, test_bdd_sltu, test_bdd_sra,
-        test_bdd_srl, test_bdd_sub, test_bdd_xor, test_glwe_blind_rotation,
+        test_bdd_srl, test_bdd_sub, test_bdd_xor, test_ggsw_blind_rotation, test_glwe_blind_rotation,
     },
     blind_rotation::CGGI,
 };
@@ -13,6 +13,11 @@ fn test_glwe_blind_rotation_fft64_ref() {
     test_glwe_blind_rotation::<FFT64Ref>()
 }
 
+#[test]
+fn test_ggsw_blind_rotation_fft64_ref() {
+    test_ggsw_blind_rotation::<FFT64Ref>()
+}
+
 #[test]
 fn test_bdd_prepare_fft64_ref() {
     test_bdd_prepare::<CGGI, FFT64Ref>()

poulpy-schemes/src/tfhe/bdd_arithmetic/tests/test_suite/ggsw_blind_rotations.rs

@@ -0,0 +1,149 @@
+use poulpy_core::{
+    GGSWEncryptSk, GGSWNoise, GLWEDecrypt, GLWEEncryptSk, SIGMA, ScratchTakeCore,
+    layouts::{
+        Base2K, Degree, Dnum, Dsize, GGSW, GGSWLayout, GGSWPreparedFactory, GLWESecret, GLWESecretPrepared,
+        GLWESecretPreparedFactory, LWEInfos, Rank, TorusPrecision,
+    },
+};
+use poulpy_hal::{
+    api::{ModuleNew, ScratchOwnedAlloc, ScratchOwnedBorrow, VecZnxRotateInplace},
+    layouts::{Backend, Module, ScalarZnx, Scratch, ScratchOwned, ZnxView, ZnxViewMut},
+    source::Source,
+};
+use rand::RngCore;
+
+use crate::tfhe::bdd_arithmetic::{FheUintBlocksPrepared, GGSWBlindRotation};
+
+pub fn test_ggsw_blind_rotation<BE: Backend>()
+where
+    Module<BE>: ModuleNew<BE>
+        + GLWESecretPreparedFactory<BE>
+        + GGSWPreparedFactory<BE>
+        + GGSWEncryptSk<BE>
+        + GGSWBlindRotation<u32, BE>
+        + GGSWNoise<BE>
+        + GLWEDecrypt<BE>
+        + GLWEEncryptSk<BE>
+        + VecZnxRotateInplace<BE>,
+    ScratchOwned<BE>: ScratchOwnedAlloc<BE> + ScratchOwnedBorrow<BE>,
+    Scratch<BE>: ScratchTakeCore<BE>,
+{
+    let n: Degree = Degree(1 << 11);
+    let base2k: Base2K = Base2K(13);
+    let rank: Rank = Rank(1);
+    let k_ggsw_res: TorusPrecision = TorusPrecision(39);
+    let k_ggsw_apply: TorusPrecision = TorusPrecision(52);
+
+    let ggsw_res_infos: GGSWLayout = GGSWLayout {
+        n,
+        base2k,
+        k: k_ggsw_res,
+        rank,
+        dnum: Dnum(2),
+        dsize: Dsize(1),
+    };
+
+    let ggsw_k_infos: GGSWLayout = GGSWLayout {
+        n,
+        base2k,
+        k: k_ggsw_apply,
+        rank,
+        dnum: Dnum(3),
+        dsize: Dsize(1),
+    };
+
+    let n_glwe: usize = n.into();
+
+    let module: Module<BE> = Module::<BE>::new(n_glwe as u64);
+    let mut source: Source = Source::new([6u8; 32]);
+    let mut source_xs: Source = Source::new([1u8; 32]);
+    let mut source_xa: Source = Source::new([2u8; 32]);
+    let mut source_xe: Source = Source::new([3u8; 32]);
+
+    let mut scratch: ScratchOwned<BE> = ScratchOwned::alloc(1 << 22);
+
+    let mut sk_glwe: GLWESecret<Vec<u8>> = GLWESecret::alloc(n, rank);
+    sk_glwe.fill_ternary_prob(0.5, &mut source_xs);
+    let mut sk_glwe_prep: GLWESecretPrepared<Vec<u8>, BE> = GLWESecretPrepared::alloc(&module, rank);
+    sk_glwe_prep.prepare(&module, &sk_glwe);
+
+    let mut res: GGSW<Vec<u8>> = GGSW::alloc_from_infos(&ggsw_res_infos);
+
+    let mut scalar: ScalarZnx<Vec<u8>> = ScalarZnx::alloc(n_glwe, 1);
+    scalar
+        .raw_mut()
+        .iter_mut()
+        .enumerate()
+        .for_each(|(i, x)| *x = i as i64);
+
+    let k: u32 = source.next_u32();
+
+    // println!("k: {k}");
+
+    let mut k_enc_prep: FheUintBlocksPrepared<Vec<u8>, u32, BE> =
+        FheUintBlocksPrepared::<Vec<u8>, u32, BE>::alloc(&module, &ggsw_k_infos);
+    k_enc_prep.encrypt_sk(
+        &module,
+        k,
+        &sk_glwe_prep,
+        &mut source_xa,
+        &mut source_xe,
+        scratch.borrow(),
+    );
+
+    let base: [usize; 2] = [6, 5];
+
+    assert_eq!(base.iter().sum::<usize>(), module.log_n());
+
+    // Starting bit
+    let mut bit_start: usize = 0;
+
+    let max_noise = |col_i: usize| {
+        let mut noise: f64 = -(ggsw_res_infos.size() as f64 * base2k.as_usize() as f64) + SIGMA.log2() + 2.0;
+        noise += 0.5 * ggsw_res_infos.log_n() as f64;
+        if col_i != 0 {
+            noise += 0.5 * ggsw_res_infos.log_n() as f64
+        }
+        noise
+    };
+
+    for _ in 0..32_usize.div_ceil(module.log_n()) {
+        // By how many bits to left shift
+        let mut bit_step: usize = 0;
+
+        for digit in base {
+            let mask: u32 = (1 << digit) - 1;
+
+            // How many bits to take
+            let bit_size: usize = (32 - bit_start).min(digit);
+
+            module.ggsw_blind_rotate_from_scalar(
+                &mut res,
+                &scalar,
+                &k_enc_prep,
+                bit_start,
+                bit_size,
+                bit_step,
+                scratch.borrow(),
+            );
+
+            let rot: i64 = (((k >> bit_start) & mask) << bit_step) as i64;
+
+            let mut scalar_want: ScalarZnx<Vec<u8>> = ScalarZnx::alloc(module.n(), 1);
+            scalar_want.raw_mut().copy_from_slice(scalar.raw());
+
+            module.vec_znx_rotate_inplace(-rot, &mut scalar_want.as_vec_znx_mut(), 0, scratch.borrow());
+
+            // res.print_noise(&module, &sk_glwe_prep, &scalar_want);
+
+            res.assert_noise(&module, &sk_glwe_prep, &scalar_want, &max_noise);
+
+            bit_step += digit;
+            bit_start += digit;
+
+            if bit_start >= 32 {
+                break;
+            }
+        }
+    }
+}

poulpy-schemes/src/tfhe/bdd_arithmetic/tests/test_suite/mod.rs

@@ -1,5 +1,6 @@
 mod add;
 mod and;
+mod ggsw_blind_rotations;
 mod glwe_blind_rotation;
 mod or;
 mod prepare;
@@ -13,6 +14,7 @@ mod xor;
 
 pub use add::*;
 pub use and::*;
+pub use ggsw_blind_rotations::*;
 pub use glwe_blind_rotation::*;
 pub use or::*;
 pub use prepare::*;