updated repo for publishing (#74)

poulpy-core/src/layouts/gglwe_ct.rs

@@ -0,0 +1,168 @@
+use poulpy_backend::hal::{
+    api::{FillUniform, Reset},
+    layouts::{Data, DataMut, DataRef, MatZnx, ReaderFrom, WriterTo},
+    source::Source,
+};
+
+use crate::layouts::{GLWECiphertext, Infos};
+use byteorder::{LittleEndian, ReadBytesExt, WriteBytesExt};
+
+use std::fmt;
+
+#[derive(PartialEq, Eq, Clone)]
+pub struct GGLWECiphertext<D: Data> {
+    pub(crate) data: MatZnx<D>,
+    pub(crate) basek: usize,
+    pub(crate) k: usize,
+    pub(crate) digits: usize,
+}
+
+impl<D: DataRef> fmt::Debug for GGLWECiphertext<D> {
+    fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
+        write!(f, "{}", self)
+    }
+}
+
+impl<D: DataMut> FillUniform for GGLWECiphertext<D> {
+    fn fill_uniform(&mut self, source: &mut Source) {
+        self.data.fill_uniform(source);
+    }
+}
+
+impl<D: DataMut> Reset for GGLWECiphertext<D> {
+    fn reset(&mut self) {
+        self.data.reset();
+        self.basek = 0;
+        self.k = 0;
+        self.digits = 0;
+    }
+}
+
+impl<D: DataRef> fmt::Display for GGLWECiphertext<D> {
+    fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
+        write!(
+            f,
+            "(GGLWECiphertext: basek={} k={} digits={}) {}",
+            self.basek, self.k, self.digits, self.data
+        )
+    }
+}
+
+impl<D: DataRef> GGLWECiphertext<D> {
+    pub fn at(&self, row: usize, col: usize) -> GLWECiphertext<&[u8]> {
+        GLWECiphertext {
+            data: self.data.at(row, col),
+            basek: self.basek,
+            k: self.k,
+        }
+    }
+}
+
+impl<D: DataMut> GGLWECiphertext<D> {
+    pub fn at_mut(&mut self, row: usize, col: usize) -> GLWECiphertext<&mut [u8]> {
+        GLWECiphertext {
+            data: self.data.at_mut(row, col),
+            basek: self.basek,
+            k: self.k,
+        }
+    }
+}
+
+impl GGLWECiphertext<Vec<u8>> {
+    pub fn alloc(n: usize, basek: usize, k: usize, rows: usize, digits: usize, rank_in: usize, rank_out: usize) -> Self {
+        let size: usize = k.div_ceil(basek);
+        debug_assert!(
+            size > digits,
+            "invalid gglwe: ceil(k/basek): {} <= digits: {}",
+            size,
+            digits
+        );
+
+        assert!(
+            rows * digits <= size,
+            "invalid gglwe: rows: {} * digits:{} > ceil(k/basek): {}",
+            rows,
+            digits,
+            size
+        );
+
+        Self {
+            data: MatZnx::alloc(n, rows, rank_in, rank_out + 1, size),
+            basek,
+            k,
+            digits,
+        }
+    }
+
+    pub fn bytes_of(n: usize, basek: usize, k: usize, rows: usize, digits: usize, rank_in: usize, rank_out: usize) -> usize {
+        let size: usize = k.div_ceil(basek);
+        debug_assert!(
+            size > digits,
+            "invalid gglwe: ceil(k/basek): {} <= digits: {}",
+            size,
+            digits
+        );
+
+        assert!(
+            rows * digits <= size,
+            "invalid gglwe: rows: {} * digits:{} > ceil(k/basek): {}",
+            rows,
+            digits,
+            size
+        );
+
+        MatZnx::alloc_bytes(n, rows, rank_in, rank_out + 1, rows)
+    }
+}
+
+impl<D: Data> Infos for GGLWECiphertext<D> {
+    type Inner = MatZnx<D>;
+
+    fn inner(&self) -> &Self::Inner {
+        &self.data
+    }
+
+    fn basek(&self) -> usize {
+        self.basek
+    }
+
+    fn k(&self) -> usize {
+        self.k
+    }
+}
+
+impl<D: Data> GGLWECiphertext<D> {
+    pub fn rank(&self) -> usize {
+        self.data.cols_out() - 1
+    }
+
+    pub fn digits(&self) -> usize {
+        self.digits
+    }
+
+    pub fn rank_in(&self) -> usize {
+        self.data.cols_in()
+    }
+
+    pub fn rank_out(&self) -> usize {
+        self.data.cols_out() - 1
+    }
+}
+
+impl<D: DataMut> ReaderFrom for GGLWECiphertext<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.digits = reader.read_u64::<LittleEndian>()? as usize;
+        self.data.read_from(reader)
+    }
+}
+
+impl<D: DataRef> WriterTo for GGLWECiphertext<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)?;
+        writer.write_u64::<LittleEndian>(self.digits as u64)?;
+        self.data.write_to(writer)
+    }
+}