updated repo for publishing (#74)

poulpy-schemes/src/tfhe/blind_rotation/key.rs

@@ -0,0 +1,163 @@
+use poulpy_backend::hal::{
+    api::{FillUniform, Reset},
+    layouts::{Backend, Data, DataMut, DataRef, Module, ReaderFrom, Scratch, WriterTo},
+    source::Source,
+};
+
+use std::{fmt, marker::PhantomData};
+
+use poulpy_core::{
+    Distribution,
+    layouts::{GGSWCiphertext, Infos, LWESecret, prepared::GLWESecretPrepared},
+};
+
+use byteorder::{LittleEndian, ReadBytesExt, WriteBytesExt};
+
+use crate::tfhe::blind_rotation::BlindRotationAlgo;
+
+pub trait BlindRotationKeyAlloc {
+    fn alloc(n_gglwe: usize, n_lwe: usize, basek: usize, k: usize, rows: usize, rank: usize) -> Self;
+}
+
+pub trait BlindRotationKeyEncryptSk<B: Backend> {
+    #[allow(clippy::too_many_arguments)]
+    fn encrypt_sk<DataSkGLWE, DataSkLWE>(
+        &mut self,
+        module: &Module<B>,
+        sk_glwe: &GLWESecretPrepared<DataSkGLWE, B>,
+        sk_lwe: &LWESecret<DataSkLWE>,
+        source_xa: &mut Source,
+        source_xe: &mut Source,
+        sigma: f64,
+        scratch: &mut Scratch<B>,
+    ) where
+        DataSkGLWE: DataRef,
+        DataSkLWE: DataRef;
+}
+
+#[derive(Clone)]
+pub struct BlindRotationKey<D: Data, BRT: BlindRotationAlgo> {
+    pub(crate) keys: Vec<GGSWCiphertext<D>>,
+    pub(crate) dist: Distribution,
+    pub(crate) _phantom: PhantomData<BRT>,
+}
+
+impl<D: DataRef, BRT: BlindRotationAlgo> fmt::Debug for BlindRotationKey<D, BRT> {
+    fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
+        write!(f, "{}", self)
+    }
+}
+
+impl<D: Data, BRT: BlindRotationAlgo> PartialEq for BlindRotationKey<D, BRT> {
+    fn eq(&self, other: &Self) -> bool {
+        if self.keys.len() != other.keys.len() {
+            return false;
+        }
+        for (a, b) in self.keys.iter().zip(other.keys.iter()) {
+            if a != b {
+                return false;
+            }
+        }
+
+        self.dist == other.dist && self._phantom == other._phantom
+    }
+}
+
+impl<D: Data, BRT: BlindRotationAlgo> Eq for BlindRotationKey<D, BRT> {}
+
+impl<D: DataRef, BRT: BlindRotationAlgo> fmt::Display for BlindRotationKey<D, BRT> {
+    fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
+        for (i, key) in self.keys.iter().enumerate() {
+            write!(f, "key[{}]: {}", i, key)?;
+        }
+        writeln!(f, "{:?}", self.dist)
+    }
+}
+
+impl<D: DataMut, BRT: BlindRotationAlgo> Reset for BlindRotationKey<D, BRT> {
+    fn reset(&mut self) {
+        self.keys.iter_mut().for_each(|key| key.reset());
+        self.dist = Distribution::NONE;
+    }
+}
+
+impl<D: DataMut, BRT: BlindRotationAlgo> FillUniform for BlindRotationKey<D, BRT> {
+    fn fill_uniform(&mut self, source: &mut Source) {
+        self.keys
+            .iter_mut()
+            .for_each(|key| key.fill_uniform(source));
+    }
+}
+
+impl<D: DataMut, BRT: BlindRotationAlgo> ReaderFrom for BlindRotationKey<D, BRT> {
+    fn read_from<R: std::io::Read>(&mut self, reader: &mut R) -> std::io::Result<()> {
+        match Distribution::read_from(reader) {
+            Ok(dist) => self.dist = dist,
+            Err(e) => return Err(e),
+        }
+        let len: usize = reader.read_u64::<LittleEndian>()? as usize;
+        if self.keys.len() != len {
+            return Err(std::io::Error::new(
+                std::io::ErrorKind::InvalidData,
+                format!("self.keys.len()={} != read len={}", self.keys.len(), len),
+            ));
+        }
+        for key in &mut self.keys {
+            key.read_from(reader)?;
+        }
+        Ok(())
+    }
+}
+
+impl<D: DataRef, BRT: BlindRotationAlgo> WriterTo for BlindRotationKey<D, BRT> {
+    fn write_to<W: std::io::Write>(&self, writer: &mut W) -> std::io::Result<()> {
+        match self.dist.write_to(writer) {
+            Ok(()) => {}
+            Err(e) => return Err(e),
+        }
+        writer.write_u64::<LittleEndian>(self.keys.len() as u64)?;
+        for key in &self.keys {
+            key.write_to(writer)?;
+        }
+        Ok(())
+    }
+}
+
+impl<D: DataRef, BRT: BlindRotationAlgo> BlindRotationKey<D, BRT> {
+    #[allow(dead_code)]
+    pub(crate) fn n(&self) -> usize {
+        self.keys[0].n()
+    }
+
+    #[allow(dead_code)]
+    pub(crate) fn rows(&self) -> usize {
+        self.keys[0].rows()
+    }
+
+    #[allow(dead_code)]
+    pub(crate) fn k(&self) -> usize {
+        self.keys[0].k()
+    }
+
+    #[allow(dead_code)]
+    pub(crate) fn size(&self) -> usize {
+        self.keys[0].size()
+    }
+
+    #[allow(dead_code)]
+    pub(crate) fn rank(&self) -> usize {
+        self.keys[0].rank()
+    }
+
+    pub(crate) fn basek(&self) -> usize {
+        self.keys[0].basek()
+    }
+
+    #[allow(dead_code)]
+    pub(crate) fn block_size(&self) -> usize {
+        match self.dist {
+            Distribution::BinaryBlock(value) => value,
+            _ => 1,
+        }
+    }
+}