1use std::fmt;
  2
  3use poulpy_hal::layouts::{Backend, Data, DataMut, DataRef, Module, VecZnx, VecZnxToMut, VecZnxToRef, ZnxInfos};
  4
  5use crate::layouts::{
  6    Base2K, Degree, GLWE, GLWEInfos, GLWEToMut, GLWEToRef, GetDegree, LWEInfos, Rank, SetGLWEInfos, TorusPrecision,
  7};
  8
  9#[derive(PartialEq, Eq, Copy, Clone, Debug)]
 10pub struct GLWEPlaintextLayout {
 11    pub n: Degree,
 12    pub base2k: Base2K,
 13    pub k: TorusPrecision,
 14}
 15
 16impl LWEInfos for GLWEPlaintextLayout {
 17    fn base2k(&self) -> Base2K {
 18        self.base2k
 19    }
 20
 21    fn k(&self) -> TorusPrecision {
 22        self.k
 23    }
 24
 25    fn n(&self) -> Degree {
 26        self.n
 27    }
 28}
 29
 30impl GLWEInfos for GLWEPlaintextLayout {
 31    fn rank(&self) -> Rank {
 32        Rank(0)
 33    }
 34}
 35
 36pub struct GLWEPlaintext<D: Data> {
 37    pub data: VecZnx<D>,
 38    pub base2k: Base2K,
 39    pub k: TorusPrecision,
 40}
 41
 42impl<D: DataMut> SetGLWEInfos for GLWEPlaintext<D> {
 43    fn set_base2k(&mut self, base2k: Base2K) {
 44        self.base2k = base2k
 45    }
 46
 47    fn set_k(&mut self, k: TorusPrecision) {
 48        self.k = k
 49    }
 50}
 51
 52impl<D: Data> LWEInfos for GLWEPlaintext<D> {
 53    fn base2k(&self) -> Base2K {
 54        self.base2k
 55    }
 56
 57    fn k(&self) -> TorusPrecision {
 58        self.k
 59    }
 60
 61    fn size(&self) -> usize {
 62        self.data.size()
 63    }
 64
 65    fn n(&self) -> Degree {
 66        Degree(self.data.n() as u32)
 67    }
 68}
 69
 70impl<D: Data> GLWEInfos for GLWEPlaintext<D> {
 71    fn rank(&self) -> Rank {
 72        Rank(self.data.cols() as u32 - 1)
 73    }
 74}
 75
 76impl<D: DataRef> fmt::Display for GLWEPlaintext<D> {
 77    fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
 78        write!(
 79            f,
 80            "GLWEPlaintext: base2k={} k={}: {}",
 81            self.base2k().0,
 82            self.k().0,
 83            self.data
 84        )
 85    }
 86}
 87
 88pub trait GLWEPlaintextAlloc
 89where
 90    Self: GetDegree,
 91{
 92    fn alloc_glwe_plaintext(&self, base2k: Base2K, k: TorusPrecision) -> GLWEPlaintext<Vec<u8>> {
 93        GLWEPlaintext {
 94            data: VecZnx::alloc(self.n().into(), 1, k.0.div_ceil(base2k.0) as usize),
 95            base2k,
 96            k,
 97        }
 98    }
 99
100    fn alloc_glwe_plaintext_from_infos<A>(&self, infos: &A) -> GLWEPlaintext<Vec<u8>>
101    where
102        A: GLWEInfos,
103    {
104        self.alloc_glwe_plaintext(infos.base2k(), infos.k())
105    }
106
107    fn bytes_of_glwe_plaintext(&self, base2k: Base2K, k: TorusPrecision) -> usize {
108        VecZnx::bytes_of(self.n().into(), 1, k.0.div_ceil(base2k.0) as usize)
109    }
110
111    fn bytes_of_glwe_plaintext_from_infos<A>(&self, infos: &A) -> usize
112    where
113        A: GLWEInfos,
114    {
115        self.bytes_of_glwe_plaintext(infos.base2k(), infos.k())
116    }
117}
118
119impl<B: Backend> GLWEPlaintextAlloc for Module<B> where Self: GetDegree {}
120
121impl GLWEPlaintext<Vec<u8>> {
122    pub fn alloc_from_infos<A, M>(module: &M, infos: &A) -> Self
123    where
124        A: GLWEInfos,
125        M: GLWEPlaintextAlloc,
126    {
127        module.alloc_glwe_plaintext_from_infos(infos)
128    }
129
130    pub fn alloc<M>(module: &M, base2k: Base2K, k: TorusPrecision) -> Self
131    where
132        M: GLWEPlaintextAlloc,
133    {
134        module.alloc_glwe_plaintext(base2k, k)
135    }
136
137    pub fn bytes_of_from_infos<A, M>(module: &M, infos: &A) -> usize
138    where
139        A: GLWEInfos,
140        M: GLWEPlaintextAlloc,
141    {
142        module.bytes_of_glwe_plaintext_from_infos(infos)
143    }
144
145    pub fn bytes_of<M>(module: &M, base2k: Base2K, k: TorusPrecision) -> usize
146    where
147        M: GLWEPlaintextAlloc,
148    {
149        module.bytes_of_glwe_plaintext(base2k, k)
150    }
151}
152
153impl<D: DataRef> GLWEToRef for GLWEPlaintext<D> {
154    fn to_ref(&self) -> GLWE<&[u8]> {
155        GLWE {
156            k: self.k,
157            base2k: self.base2k,
158            data: self.data.to_ref(),
159        }
160    }
161}
162
163impl<D: DataMut> GLWEToMut for GLWEPlaintext<D> {
164    fn to_mut(&mut self) -> GLWE<&mut [u8]> {
165        GLWE {
166            k: self.k,
167            base2k: self.base2k,
168            data: self.data.to_mut(),
169        }
170    }
171}
172
173pub trait GLWEPlaintextToRef {
174    fn to_ref(&self) -> GLWEPlaintext<&[u8]>;
175}
176
177impl<D: DataRef> GLWEPlaintextToRef for GLWEPlaintext<D> {
178    fn to_ref(&self) -> GLWEPlaintext<&[u8]> {
179        GLWEPlaintext {
180            data: self.data.to_ref(),
181            base2k: self.base2k,
182            k: self.k,
183        }
184    }
185}
186
187pub trait GLWEPlaintextToMut {
188    fn to_ref(&mut self) -> GLWEPlaintext<&mut [u8]>;
189}
190
191impl<D: DataMut> GLWEPlaintextToMut for GLWEPlaintext<D> {
192    fn to_ref(&mut self) -> GLWEPlaintext<&mut [u8]> {
193        GLWEPlaintext {
194            base2k: self.base2k,
195            k: self.k,
196            data: self.data.to_mut(),
197        }
198    }
199}