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hard coded noise bound to 6 sigma

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This commit is contained in:
Jean-Philippe Bossuat
2025-05-14 09:18:46 +02:00
parent 66188a12a6
commit d489bef105
11 changed files with 14 additions and 99 deletions
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21
core/src/glwe_ciphertext.rs
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@@ -7,6 +7,7 @@ use base2k::{
use sampling::source::Source;
use crate::{
SIX_SIGMA,
elem::Infos,
gglwe_ciphertext::GGLWECiphertext,
ggsw_ciphertext::GGSWCiphertext,
@@ -145,7 +146,6 @@ where
source_xa: &mut Source,
source_xe: &mut Source,
sigma: f64,
bound: f64,
scratch: &mut Scratch,
) where
VecZnx<DataPt>: VecZnxToRef,
@@ -158,7 +158,6 @@ where
source_xa,
source_xe,
sigma,
bound,
scratch,
);
}
@@ -170,14 +169,11 @@ where
source_xa: &mut Source,
source_xe: &mut Source,
sigma: f64,
bound: f64,
scratch: &mut Scratch,
) where
ScalarZnxDft<DataSk, FFT64>: ScalarZnxDftToRef<FFT64>,
{
self.encrypt_sk_private(
module, None, sk_dft, source_xa, source_xe, sigma, bound, scratch,
);
self.encrypt_sk_private(module, None, sk_dft, source_xa, source_xe, sigma, scratch);
}
pub fn encrypt_pk<DataPt, DataPk>(
@@ -188,7 +184,6 @@ where
source_xu: &mut Source,
source_xe: &mut Source,
sigma: f64,
bound: f64,
scratch: &mut Scratch,
) where
VecZnx<DataPt>: VecZnxToRef,
@@ -201,7 +196,6 @@ where
source_xu,
source_xe,
sigma,
bound,
scratch,
);
}
@@ -213,14 +207,11 @@ where
source_xu: &mut Source,
source_xe: &mut Source,
sigma: f64,
bound: f64,
scratch: &mut Scratch,
) where
VecZnxDft<DataPk, FFT64>: VecZnxDftToRef<FFT64>,
{
self.encrypt_pk_private(
module, None, pk, source_xu, source_xe, sigma, bound, scratch,
);
self.encrypt_pk_private(module, None, pk, source_xu, source_xe, sigma, scratch);
}
pub fn keyswitch<DataLhs, DataRhs>(
@@ -279,7 +270,6 @@ where
source_xa: &mut Source,
source_xe: &mut Source,
sigma: f64,
bound: f64,
scratch: &mut Scratch,
) where
VecZnx<DataPt>: VecZnxToRef,
@@ -335,7 +325,7 @@ where
}
// c[0] += e
c0_big.add_normal(log_base2k, 0, log_k, source_xe, sigma, bound);
c0_big.add_normal(log_base2k, 0, log_k, source_xe, sigma, sigma * SIX_SIGMA);
// c[0] += m if col = 0
if let Some((pt, col)) = pt {
@@ -356,7 +346,6 @@ where
source_xu: &mut Source,
source_xe: &mut Source,
sigma: f64,
bound: f64,
scratch: &mut Scratch,
) where
VecZnx<DataPt>: VecZnxToRef,
@@ -406,7 +395,7 @@ where
let mut ci_big = module.vec_znx_idft_consume(ci_dft);
// ci_big = u * pk[i] + e
ci_big.add_normal(log_base2k, 0, pk.k(), source_xe, sigma, bound);
ci_big.add_normal(log_base2k, 0, pk.k(), source_xe, sigma, sigma * SIX_SIGMA);
// ci_big = u * pk[i] + e + m (if col = i)
if let Some((pt, col)) = pt {