poulpy_core/layouts/
glwe_automorphism_key.rs

1use poulpy_hal::{
2    layouts::{Data, DataMut, DataRef, FillUniform, ReaderFrom, WriterTo},
3    source::Source,
4};
5
6use crate::layouts::{
7    Base2K, Degree, Dnum, Dsize, GGLWE, GGLWEInfos, GGLWEToMut, GGLWEToRef, GLWE, GLWEInfos, LWEInfos, Rank, TorusPrecision,
8};
9use byteorder::{LittleEndian, ReadBytesExt, WriteBytesExt};
10
11use std::fmt;
12
13#[derive(PartialEq, Eq, Copy, Clone, Debug)]
14pub struct GLWEAutomorphismKeyLayout {
15    pub n: Degree,
16    pub base2k: Base2K,
17    pub k: TorusPrecision,
18    pub rank: Rank,
19    pub dnum: Dnum,
20    pub dsize: Dsize,
21}
22
23#[derive(PartialEq, Eq, Clone)]
24pub struct GLWEAutomorphismKey<D: Data> {
25    pub(crate) key: GGLWE<D>,
26    pub(crate) p: i64,
27}
28
29pub trait GetGaloisElement {
30    fn p(&self) -> i64;
31}
32
33pub trait SetGaloisElement {
34    fn set_p(&mut self, p: i64);
35}
36
37impl<D: DataMut> SetGaloisElement for GLWEAutomorphismKey<D> {
38    fn set_p(&mut self, p: i64) {
39        self.p = p
40    }
41}
42
43impl<D: DataRef> GetGaloisElement for GLWEAutomorphismKey<D> {
44    fn p(&self) -> i64 {
45        self.p
46    }
47}
48
49impl<D: Data> GLWEAutomorphismKey<D> {
50    pub fn p(&self) -> i64 {
51        self.p
52    }
53}
54
55impl<D: Data> LWEInfos for GLWEAutomorphismKey<D> {
56    fn n(&self) -> Degree {
57        self.key.n()
58    }
59
60    fn base2k(&self) -> Base2K {
61        self.key.base2k()
62    }
63
64    fn k(&self) -> TorusPrecision {
65        self.key.k()
66    }
67
68    fn size(&self) -> usize {
69        self.key.size()
70    }
71}
72
73impl<D: Data> GLWEInfos for GLWEAutomorphismKey<D> {
74    fn rank(&self) -> Rank {
75        self.rank_out()
76    }
77}
78
79impl<D: Data> GGLWEInfos for GLWEAutomorphismKey<D> {
80    fn rank_in(&self) -> Rank {
81        self.key.rank_in()
82    }
83
84    fn rank_out(&self) -> Rank {
85        self.key.rank_out()
86    }
87
88    fn dsize(&self) -> Dsize {
89        self.key.dsize()
90    }
91
92    fn dnum(&self) -> Dnum {
93        self.key.dnum()
94    }
95}
96
97impl LWEInfos for GLWEAutomorphismKeyLayout {
98    fn base2k(&self) -> Base2K {
99        self.base2k
100    }
101
102    fn k(&self) -> TorusPrecision {
103        self.k
104    }
105
106    fn n(&self) -> Degree {
107        self.n
108    }
109}
110
111impl GLWEInfos for GLWEAutomorphismKeyLayout {
112    fn rank(&self) -> Rank {
113        self.rank
114    }
115}
116
117impl GGLWEInfos for GLWEAutomorphismKeyLayout {
118    fn rank_in(&self) -> Rank {
119        self.rank
120    }
121
122    fn dsize(&self) -> Dsize {
123        self.dsize
124    }
125
126    fn rank_out(&self) -> Rank {
127        self.rank
128    }
129
130    fn dnum(&self) -> Dnum {
131        self.dnum
132    }
133}
134
135impl<D: DataRef> fmt::Debug for GLWEAutomorphismKey<D> {
136    fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
137        write!(f, "{self}")
138    }
139}
140
141impl<D: DataMut> FillUniform for GLWEAutomorphismKey<D> {
142    fn fill_uniform(&mut self, log_bound: usize, source: &mut Source) {
143        self.key.fill_uniform(log_bound, source);
144    }
145}
146
147impl<D: DataRef> fmt::Display for GLWEAutomorphismKey<D> {
148    fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
149        write!(f, "(AutomorphismKey: p={}) {}", self.p, self.key)
150    }
151}
152
153impl GLWEAutomorphismKey<Vec<u8>> {
154    pub fn alloc_from_infos<A>(infos: &A) -> Self
155    where
156        A: GGLWEInfos,
157    {
158        Self::alloc(
159            infos.n(),
160            infos.base2k(),
161            infos.k(),
162            infos.rank(),
163            infos.dnum(),
164            infos.dsize(),
165        )
166    }
167
168    pub fn alloc(n: Degree, base2k: Base2K, k: TorusPrecision, rank: Rank, dnum: Dnum, dsize: Dsize) -> Self {
169        GLWEAutomorphismKey {
170            key: GGLWE::alloc(n, base2k, k, rank, rank, dnum, dsize),
171            p: 0,
172        }
173    }
174
175    pub fn bytes_of_from_infos<A>(infos: &A) -> usize
176    where
177        A: GGLWEInfos,
178    {
179        assert_eq!(
180            infos.rank_in(),
181            infos.rank_out(),
182            "rank_in != rank_out is not supported for AutomorphismKey"
183        );
184        Self::bytes_of(
185            infos.n(),
186            infos.base2k(),
187            infos.k(),
188            infos.rank(),
189            infos.dnum(),
190            infos.dsize(),
191        )
192    }
193
194    pub fn bytes_of(n: Degree, base2k: Base2K, k: TorusPrecision, rank: Rank, dnum: Dnum, dsize: Dsize) -> usize {
195        GGLWE::bytes_of(n, base2k, k, rank, rank, dnum, dsize)
196    }
197}
198
199impl<D: DataMut> GGLWEToMut for GLWEAutomorphismKey<D> {
200    fn to_mut(&mut self) -> GGLWE<&mut [u8]> {
201        self.key.to_mut()
202    }
203}
204
205impl<D: DataRef> GGLWEToRef for GLWEAutomorphismKey<D> {
206    fn to_ref(&self) -> GGLWE<&[u8]> {
207        self.key.to_ref()
208    }
209}
210
211impl<D: DataRef> GLWEAutomorphismKey<D> {
212    pub fn at(&self, row: usize, col: usize) -> GLWE<&[u8]> {
213        self.key.at(row, col)
214    }
215}
216
217impl<D: DataMut> GLWEAutomorphismKey<D> {
218    pub fn at_mut(&mut self, row: usize, col: usize) -> GLWE<&mut [u8]> {
219        self.key.at_mut(row, col)
220    }
221}
222
223impl<D: DataMut> ReaderFrom for GLWEAutomorphismKey<D> {
224    fn read_from<R: std::io::Read>(&mut self, reader: &mut R) -> std::io::Result<()> {
225        self.p = reader.read_u64::<LittleEndian>()? as i64;
226        self.key.read_from(reader)
227    }
228}
229
230impl<D: DataRef> WriterTo for GLWEAutomorphismKey<D> {
231    fn write_to<W: std::io::Write>(&self, writer: &mut W) -> std::io::Result<()> {
232        writer.write_u64::<LittleEndian>(self.p as u64)?;
233        self.key.write_to(writer)
234    }
235}
poulpy_core/layouts/glwe_automorphism_key.rs

poulpy_core/layouts/
glwe_automorphism_key.rs
