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Added GGSW key-switching along with algo description

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This commit is contained in:
Jean-Philippe Bossuat
2025-05-20 11:43:18 +02:00
parent 8f2eac4928
commit 06b3cccbff
7 changed files with 272 additions and 51 deletions
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23
core/src/tensor_key.rs
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@@ -105,15 +105,6 @@ where
})
}
// Returns a reference to GLWESwitchingKey_{s}(s[i] * s[j])
pub fn at(&self, mut i: usize, mut j: usize) -> &GLWESwitchingKey<DataSelf, FFT64> {
if i > j {
std::mem::swap(&mut i, &mut j);
};
let rank: usize = self.rank();
&self.keys[i * rank + j - (i * (i + 1) / 2)]
}
// Returns a mutable reference to GLWESwitchingKey_{s}(s[i] * s[j])
pub fn at_mut(&mut self, mut i: usize, mut j: usize) -> &mut GLWESwitchingKey<DataSelf, FFT64> {
if i > j {
@@ -123,3 +114,17 @@ where
&mut self.keys[i * rank + j - (i * (i + 1) / 2)]
}
}
impl<DataSelf> TensorKey<DataSelf, FFT64>
where
MatZnxDft<DataSelf, FFT64>: MatZnxDftToRef<FFT64>,
{
// Returns a reference to GLWESwitchingKey_{s}(s[i] * s[j])
pub fn at(&self, mut i: usize, mut j: usize) -> &GLWESwitchingKey<DataSelf, FFT64> {
if i > j {
std::mem::swap(&mut i, &mut j);
};
let rank: usize = self.rank();
&self.keys[i * rank + j - (i * (i + 1) / 2)]
}
}