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prototype trait for Elem<T> + new ciphertext for VmPPmat

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This commit is contained in:
Jean-Philippe Bossuat
2025-02-18 11:04:13 +01:00
parent fdc2f3ac42
commit d486e89761
21 changed files with 767 additions and 811 deletions
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32
base2k/examples/rlwe_encrypt.rs
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@@ -8,9 +8,9 @@ use sampling::source::Source;
fn main() {
let n: usize = 16;
let log_base2k: usize = 18;
let limbs: usize = 3;
let msg_limbs: usize = 2;
let log_scale: usize = msg_limbs * log_base2k - 5;
let cols: usize = 3;
let msg_cols: usize = 2;
let log_scale: usize = msg_cols * log_base2k - 5;
let module: Module = Module::new::<FFT64>(n);
let mut carry: Vec<u8> = vec![0; module.vec_znx_big_normalize_tmp_bytes()];
@@ -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(limbs);
let mut res: VecZnx = module.new_vec_znx(cols);
// s <- Z_{-1, 0, 1}[X]/(X^{N}+1)
let mut s: Scalar = Scalar::new(n);
@@ -31,22 +31,22 @@ 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(limbs);
module.fill_uniform(log_base2k, &mut a, limbs, &mut source);
let mut a: VecZnx = module.new_vec_znx(cols);
module.fill_uniform(log_base2k, &mut a, cols, &mut source);
// Scratch space for DFT values
let mut buf_dft: VecZnxDft = module.new_vec_znx_dft(a.limbs());
let mut buf_dft: VecZnxDft = module.new_vec_znx_dft(a.cols());
// Applies buf_dft <- s * a
module.svp_apply_dft(&mut buf_dft, &s_ppol, &a, a.limbs());
module.svp_apply_dft(&mut buf_dft, &s_ppol, &a, a.cols());
// Alias scratch space
let mut buf_big: VecZnxBig = buf_dft.as_vec_znx_big();
// buf_big <- IDFT(buf_dft) (not normalized)
module.vec_znx_idft_tmp_a(&mut buf_big, &mut buf_dft, a.limbs());
module.vec_znx_idft_tmp_a(&mut buf_big, &mut buf_dft, a.cols());
let mut m: VecZnx = module.new_vec_znx(msg_limbs);
let mut m: VecZnx = module.new_vec_znx(msg_cols);
let mut want: Vec<i64> = vec![0; n];
want.iter_mut()
@@ -60,12 +60,12 @@ fn main() {
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(limbs);
let mut b: VecZnx = module.new_vec_znx(cols);
module.vec_znx_big_normalize(log_base2k, &mut b, &buf_big, &mut carry);
module.add_normal(
log_base2k,
&mut b,
log_base2k * limbs,
log_base2k * cols,
&mut source,
3.2,
19.0,
@@ -74,8 +74,8 @@ fn main() {
//Decrypt
// buf_big <- a * s
module.svp_apply_dft(&mut buf_dft, &s_ppol, &a, a.limbs());
module.vec_znx_idft_tmp_a(&mut buf_big, &mut buf_dft, b.limbs());
module.svp_apply_dft(&mut buf_dft, &s_ppol, &a, a.cols());
module.vec_znx_idft_tmp_a(&mut buf_big, &mut buf_dft, b.cols());
// buf_big <- a * s + b
module.vec_znx_big_add_small_inplace(&mut buf_big, &b);
@@ -85,9 +85,9 @@ fn main() {
// have = m * 2^{log_scale} + e
let mut have: Vec<i64> = vec![i64::default(); n];
res.decode_vec_i64(log_base2k, res.limbs() * log_base2k, &mut have);
res.decode_vec_i64(log_base2k, res.cols() * log_base2k, &mut have);
let scale: f64 = (1 << (res.limbs() * log_base2k - log_scale)) as f64;
let scale: f64 = (1 << (res.cols() * log_base2k - log_scale)) as f64;
izip!(want.iter(), have.iter())
.enumerate()
.for_each(|(i, (a, b))| {