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Updated vec_znx to stacked memory layout

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This commit is contained in:
Jean-Philippe Bossuat
2025-04-24 19:05:26 +02:00
parent 04d74e589b
commit 83a7617f4b
8 changed files with 399 additions and 232 deletions
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12
base2k/examples/rlwe_encrypt.rs
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@@ -18,7 +18,7 @@ fn main() {
let seed: [u8; 32] = [0; 32];
let mut source: Source = Source::new(seed);
let mut res: VecZnx = module.new_vec_znx(cols);
let mut res: VecZnx = module.new_vec_znx(1, cols);
// s <- Z_{-1, 0, 1}[X]/(X^{N}+1)
let mut s: Scalar = Scalar::new(n);
@@ -31,7 +31,7 @@ fn main() {
module.svp_prepare(&mut s_ppol, &s);
// a <- Z_{2^prec}[X]/(X^{N}+1)
let mut a: VecZnx = module.new_vec_znx(cols);
let mut a: VecZnx = module.new_vec_znx(1, cols);
module.fill_uniform(log_base2k, &mut a, cols, &mut source);
// Scratch space for DFT values
@@ -46,21 +46,21 @@ fn main() {
// buf_big <- IDFT(buf_dft) (not normalized)
module.vec_znx_idft_tmp_a(&mut buf_big, &mut buf_dft);
let mut m: VecZnx = module.new_vec_znx(msg_cols);
let mut m: VecZnx = module.new_vec_znx(1, msg_cols);
let mut want: Vec<i64> = vec![0; n];
want.iter_mut()
.for_each(|x| *x = source.next_u64n(16, 15) as i64);
// m
m.encode_vec_i64(log_base2k, log_scale, &want, 4);
m.encode_vec_i64(0, log_base2k, log_scale, &want, 4);
m.normalize(log_base2k, &mut carry);
// buf_big <- m - buf_big
module.vec_znx_big_sub_small_a_inplace(&mut buf_big, &m);
// b <- normalize(buf_big) + e
let mut b: VecZnx = module.new_vec_znx(cols);
let mut b: VecZnx = module.new_vec_znx(1, cols);
module.vec_znx_big_normalize(log_base2k, &mut b, &buf_big, &mut carry);
module.add_normal(
log_base2k,
@@ -85,7 +85,7 @@ fn main() {
// have = m * 2^{log_scale} + e
let mut have: Vec<i64> = vec![i64::default(); n];
res.decode_vec_i64(log_base2k, res.cols() * log_base2k, &mut have);
res.decode_vec_i64(0, log_base2k, res.cols() * log_base2k, &mut have);
let scale: f64 = (1 << (res.cols() * log_base2k - log_scale)) as f64;
izip!(want.iter(), have.iter())