updated repo for publishing (#74)

poulpy-core/src/layouts/lwe_ct.rs

@@ -0,0 +1,153 @@
+use std::fmt;
+
+use poulpy_backend::hal::{
+    api::{FillUniform, Reset, ZnxInfos},
+    layouts::{Data, DataMut, DataRef, ReaderFrom, VecZnx, VecZnxToMut, VecZnxToRef, WriterTo},
+    source::Source,
+};
+
+#[derive(PartialEq, Eq, Clone)]
+pub struct LWECiphertext<D: Data> {
+    pub(crate) data: VecZnx<D>,
+    pub(crate) k: usize,
+    pub(crate) basek: usize,
+}
+
+impl<D: DataRef> LWECiphertext<D> {
+    pub fn data(&self) -> &VecZnx<D> {
+        &self.data
+    }
+}
+
+impl<D: DataMut> LWECiphertext<D> {
+    pub fn data_mut(&mut self) -> &VecZnx<D> {
+        &mut self.data
+    }
+}
+
+impl<D: DataRef> fmt::Debug for LWECiphertext<D> {
+    fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
+        write!(f, "{}", self)
+    }
+}
+
+impl<D: DataRef> fmt::Display for LWECiphertext<D> {
+    fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
+        write!(
+            f,
+            "LWECiphertext: basek={} k={}: {}",
+            self.basek(),
+            self.k(),
+            self.data
+        )
+    }
+}
+
+impl<D: DataMut> Reset for LWECiphertext<D> {
+    fn reset(&mut self) {
+        self.data.reset();
+        self.basek = 0;
+        self.k = 0;
+    }
+}
+
+impl<D: DataMut> FillUniform for LWECiphertext<D>
+where
+    VecZnx<D>: FillUniform,
+{
+    fn fill_uniform(&mut self, source: &mut Source) {
+        self.data.fill_uniform(source);
+    }
+}
+
+impl LWECiphertext<Vec<u8>> {
+    pub fn alloc(n: usize, basek: usize, k: usize) -> Self {
+        Self {
+            data: VecZnx::alloc(n + 1, 1, k.div_ceil(basek)),
+            k,
+            basek,
+        }
+    }
+}
+
+impl<D: Data> Infos for LWECiphertext<D>
+where
+    VecZnx<D>: ZnxInfos,
+{
+    type Inner = VecZnx<D>;
+
+    fn n(&self) -> usize {
+        &self.inner().n() - 1
+    }
+
+    fn inner(&self) -> &Self::Inner {
+        &self.data
+    }
+
+    fn basek(&self) -> usize {
+        self.basek
+    }
+
+    fn k(&self) -> usize {
+        self.k
+    }
+}
+
+impl<DataSelf: DataMut> SetMetaData for LWECiphertext<DataSelf> {
+    fn set_k(&mut self, k: usize) {
+        self.k = k
+    }
+
+    fn set_basek(&mut self, basek: usize) {
+        self.basek = basek
+    }
+}
+
+pub trait LWECiphertextToRef {
+    fn to_ref(&self) -> LWECiphertext<&[u8]>;
+}
+
+impl<D: DataRef> LWECiphertextToRef for LWECiphertext<D> {
+    fn to_ref(&self) -> LWECiphertext<&[u8]> {
+        LWECiphertext {
+            data: self.data.to_ref(),
+            basek: self.basek,
+            k: self.k,
+        }
+    }
+}
+
+pub trait LWECiphertextToMut {
+    #[allow(dead_code)]
+    fn to_mut(&mut self) -> LWECiphertext<&mut [u8]>;
+}
+
+impl<D: DataMut> LWECiphertextToMut for LWECiphertext<D> {
+    fn to_mut(&mut self) -> LWECiphertext<&mut [u8]> {
+        LWECiphertext {
+            data: self.data.to_mut(),
+            basek: self.basek,
+            k: self.k,
+        }
+    }
+}
+
+use byteorder::{LittleEndian, ReadBytesExt, WriteBytesExt};
+
+use crate::layouts::{Infos, SetMetaData};
+
+impl<D: DataMut> ReaderFrom for LWECiphertext<D> {
+    fn read_from<R: std::io::Read>(&mut self, reader: &mut R) -> std::io::Result<()> {
+        self.k = reader.read_u64::<LittleEndian>()? as usize;
+        self.basek = reader.read_u64::<LittleEndian>()? as usize;
+        self.data.read_from(reader)
+    }
+}
+
+impl<D: DataRef> WriterTo for LWECiphertext<D> {
+    fn write_to<W: std::io::Write>(&self, writer: &mut W) -> std::io::Result<()> {
+        writer.write_u64::<LittleEndian>(self.k as u64)?;
+        writer.write_u64::<LittleEndian>(self.basek as u64)?;
+        self.data.write_to(writer)
+    }
+}