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fast query gen skips negacyclic #22

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6 changes: 4 additions & 2 deletions research/InsPIRe/src/bin/inspire.rs
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Original file line number Diff line number Diff line change
Expand Up @@ -588,8 +588,10 @@ pub fn run_simple_ypir_rgsw_on_params(
target_row,
);

assert_eq!(query_row.len(), (params.poly_len + 1) * db_rows);
let query_row_last_row: &[u64] = &query_row[params.poly_len * db_rows..];
// assert_eq!(query_row.len(), (params.poly_len + 1) * db_rows);
// let query_row_last_row: &[u64] = &query_row[params.poly_len * db_rows..];
assert_eq!(query_row.len(), db_rows);
let query_row_last_row = &query_row;

assert_eq!(query_row_last_row.len(), db_rows);
let packed_query_row = pack_query(&params, query_row_last_row);
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14 changes: 9 additions & 5 deletions research/InsPIRe/src/client.rs
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Original file line number Diff line number Diff line change
@@ -1,3 +1,4 @@
use std::time;
use std::cmp::min;

use log::debug;
Expand All @@ -15,11 +16,13 @@ use super::convolution::negacyclic_matrix_u32;
use super::{lwe::*, noise_analysis::measure_noise_width_squared, scheme::*, util::*};

pub fn rlwe_to_lwe<'a>(params: &'a Params, ct: &PolyMatrixRaw<'a>, how_many: usize) -> Vec<u64> {
let a = ct.get_poly(0, 0);
let mut negacylic_a = negacyclic_matrix(&a, params.modulus, how_many);
negacylic_a.extend(&ct.get_poly(1, 0)[0..how_many]);
// let a: &[u64] = ct.get_poly(0, 0);
// let mut negacylic_a = negacyclic_matrix(&a, params.modulus, how_many);
// negacylic_a.extend(&ct.get_poly(1, 0)[0..how_many]);
// negacylic_a

negacylic_a
// We only need the 'b' part of the LWE ciphertext
ct.get_poly(1, 0).to_vec() // TODO: check if we need how_many
}

pub fn pack_query(params: &Params, query: &[u64]) -> AlignedMemory64 {
Expand Down Expand Up @@ -217,7 +220,8 @@ impl<'a> YClient<'a> {
.iter()
.map(|ct| rlwe_to_lwe(self.params, ct, how_many))
.collect::<Vec<_>>();
concat_horizontal(&v, self.params.poly_len + 1, how_many) //self.params.poly_len)
// concat_horizontal(&v, self.params.poly_len + 1, how_many) //self.params.poly_len)
concat_horizontal(&v, 1, self.params.poly_len)
}

pub fn generate_query_impl(
Expand Down