poulpy_core/layouts/
glwe_ct.rs

1use poulpy_hal::{
2    layouts::{Data, DataMut, DataRef, FillUniform, ReaderFrom, Reset, ToOwnedDeep, VecZnx, VecZnxToMut, VecZnxToRef, WriterTo},
3    source::Source,
4};
5
6use crate::layouts::{Infos, SetMetaData};
7use byteorder::{LittleEndian, ReadBytesExt, WriteBytesExt};
8use std::fmt;
9
10#[derive(PartialEq, Eq, Clone)]
11pub struct GLWECiphertext<D: Data> {
12    pub data: VecZnx<D>,
13    pub basek: usize,
14    pub k: usize,
15}
16
17impl<D: DataRef> ToOwnedDeep for GLWECiphertext<D> {
18    type Owned = GLWECiphertext<Vec<u8>>;
19    fn to_owned_deep(&self) -> Self::Owned {
20        GLWECiphertext {
21            data: self.data.to_owned_deep(),
22            basek: self.basek,
23            k: self.k,
24        }
25    }
26}
27
28impl<D: DataRef> fmt::Debug for GLWECiphertext<D> {
29    fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
30        write!(f, "{}", self)
31    }
32}
33
34impl<D: DataRef> fmt::Display for GLWECiphertext<D> {
35    fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
36        write!(
37            f,
38            "GLWECiphertext: basek={} k={}: {}",
39            self.basek(),
40            self.k(),
41            self.data
42        )
43    }
44}
45
46impl<D: DataMut> Reset for GLWECiphertext<D>
47where
48    VecZnx<D>: Reset,
49{
50    fn reset(&mut self) {
51        self.data.reset();
52        self.basek = 0;
53        self.k = 0;
54    }
55}
56
57impl<D: DataMut> FillUniform for GLWECiphertext<D> {
58    fn fill_uniform(&mut self, log_bound: usize, source: &mut Source) {
59        self.data.fill_uniform(log_bound, source);
60    }
61}
62
63impl GLWECiphertext<Vec<u8>> {
64    pub fn alloc(n: usize, basek: usize, k: usize, rank: usize) -> Self {
65        Self {
66            data: VecZnx::alloc(n, rank + 1, k.div_ceil(basek)),
67            basek,
68            k,
69        }
70    }
71
72    pub fn bytes_of(n: usize, basek: usize, k: usize, rank: usize) -> usize {
73        VecZnx::alloc_bytes(n, rank + 1, k.div_ceil(basek))
74    }
75}
76
77impl<D: Data> Infos for GLWECiphertext<D> {
78    type Inner = VecZnx<D>;
79
80    fn inner(&self) -> &Self::Inner {
81        &self.data
82    }
83
84    fn basek(&self) -> usize {
85        self.basek
86    }
87
88    fn k(&self) -> usize {
89        self.k
90    }
91}
92
93impl<D: Data> GLWECiphertext<D> {
94    pub fn rank(&self) -> usize {
95        self.cols() - 1
96    }
97}
98
99impl<D: DataMut> SetMetaData for GLWECiphertext<D> {
100    fn set_k(&mut self, k: usize) {
101        self.k = k
102    }
103
104    fn set_basek(&mut self, basek: usize) {
105        self.basek = basek
106    }
107}
108
109pub trait GLWECiphertextToRef: Infos {
110    fn to_ref(&self) -> GLWECiphertext<&[u8]>;
111}
112
113impl<D: DataRef> GLWECiphertextToRef for GLWECiphertext<D> {
114    fn to_ref(&self) -> GLWECiphertext<&[u8]> {
115        GLWECiphertext {
116            data: self.data.to_ref(),
117            basek: self.basek,
118            k: self.k,
119        }
120    }
121}
122
123pub trait GLWECiphertextToMut: Infos {
124    fn to_mut(&mut self) -> GLWECiphertext<&mut [u8]>;
125}
126
127impl<D: DataMut> GLWECiphertextToMut for GLWECiphertext<D> {
128    fn to_mut(&mut self) -> GLWECiphertext<&mut [u8]> {
129        GLWECiphertext {
130            data: self.data.to_mut(),
131            basek: self.basek,
132            k: self.k,
133        }
134    }
135}
136
137impl<D: DataMut> ReaderFrom for GLWECiphertext<D> {
138    fn read_from<R: std::io::Read>(&mut self, reader: &mut R) -> std::io::Result<()> {
139        self.k = reader.read_u64::<LittleEndian>()? as usize;
140        self.basek = reader.read_u64::<LittleEndian>()? as usize;
141        self.data.read_from(reader)
142    }
143}
144
145impl<D: DataRef> WriterTo for GLWECiphertext<D> {
146    fn write_to<W: std::io::Write>(&self, writer: &mut W) -> std::io::Result<()> {
147        writer.write_u64::<LittleEndian>(self.k as u64)?;
148        writer.write_u64::<LittleEndian>(self.basek as u64)?;
149        self.data.write_to(writer)
150    }
151}
poulpy_core/layouts/glwe_ct.rs

poulpy_core/layouts/
glwe_ct.rs
