poulpy_core/layouts/prepared/
gglwe_ct.rs

1use poulpy_hal::{
2    api::{VmpPMatAlloc, VmpPMatAllocBytes, VmpPrepare},
3    layouts::{Backend, Data, DataMut, DataRef, Module, Scratch, VmpPMat},
4};
5
6use crate::layouts::{
7    GGLWECiphertext, Infos,
8    prepared::{Prepare, PrepareAlloc},
9};
10
11#[derive(PartialEq, Eq)]
12pub struct GGLWECiphertextPrepared<D: Data, B: Backend> {
13    pub(crate) data: VmpPMat<D, B>,
14    pub(crate) basek: usize,
15    pub(crate) k: usize,
16    pub(crate) digits: usize,
17}
18
19impl<B: Backend> GGLWECiphertextPrepared<Vec<u8>, B> {
20    #[allow(clippy::too_many_arguments)]
21    pub fn alloc(module: &Module<B>, basek: usize, k: usize, rows: usize, digits: usize, rank_in: usize, rank_out: usize) -> Self
22    where
23        Module<B>: VmpPMatAlloc<B>,
24    {
25        let size: usize = k.div_ceil(basek);
26        debug_assert!(
27            size > digits,
28            "invalid gglwe: ceil(k/basek): {} <= digits: {}",
29            size,
30            digits
31        );
32
33        assert!(
34            rows * digits <= size,
35            "invalid gglwe: rows: {} * digits:{} > ceil(k/basek): {}",
36            rows,
37            digits,
38            size
39        );
40
41        Self {
42            data: module.vmp_pmat_alloc(rows, rank_in, rank_out + 1, size),
43            basek,
44            k,
45            digits,
46        }
47    }
48
49    #[allow(clippy::too_many_arguments)]
50    pub fn bytes_of(
51        module: &Module<B>,
52        basek: usize,
53        k: usize,
54        rows: usize,
55        digits: usize,
56        rank_in: usize,
57        rank_out: usize,
58    ) -> usize
59    where
60        Module<B>: VmpPMatAllocBytes,
61    {
62        let size: usize = k.div_ceil(basek);
63        debug_assert!(
64            size > digits,
65            "invalid gglwe: ceil(k/basek): {} <= digits: {}",
66            size,
67            digits
68        );
69
70        assert!(
71            rows * digits <= size,
72            "invalid gglwe: rows: {} * digits:{} > ceil(k/basek): {}",
73            rows,
74            digits,
75            size
76        );
77
78        module.vmp_pmat_alloc_bytes(rows, rank_in, rank_out + 1, rows)
79    }
80}
81
82impl<D: Data, B: Backend> Infos for GGLWECiphertextPrepared<D, B> {
83    type Inner = VmpPMat<D, B>;
84
85    fn inner(&self) -> &Self::Inner {
86        &self.data
87    }
88
89    fn basek(&self) -> usize {
90        self.basek
91    }
92
93    fn k(&self) -> usize {
94        self.k
95    }
96}
97
98impl<D: Data, B: Backend> GGLWECiphertextPrepared<D, B> {
99    pub fn rank(&self) -> usize {
100        self.data.cols_out() - 1
101    }
102
103    pub fn digits(&self) -> usize {
104        self.digits
105    }
106
107    pub fn rank_in(&self) -> usize {
108        self.data.cols_in()
109    }
110
111    pub fn rank_out(&self) -> usize {
112        self.data.cols_out() - 1
113    }
114}
115
116impl<D: DataMut, DR: DataRef, B: Backend> Prepare<B, GGLWECiphertext<DR>> for GGLWECiphertextPrepared<D, B>
117where
118    Module<B>: VmpPrepare<B>,
119{
120    fn prepare(&mut self, module: &Module<B>, other: &GGLWECiphertext<DR>, scratch: &mut Scratch<B>) {
121        module.vmp_prepare(&mut self.data, &other.data, scratch);
122        self.basek = other.basek;
123        self.k = other.k;
124        self.digits = other.digits;
125    }
126}
127
128impl<D: DataRef, B: Backend> PrepareAlloc<B, GGLWECiphertextPrepared<Vec<u8>, B>> for GGLWECiphertext<D>
129where
130    Module<B>: VmpPMatAlloc<B> + VmpPrepare<B>,
131{
132    fn prepare_alloc(&self, module: &Module<B>, scratch: &mut Scratch<B>) -> GGLWECiphertextPrepared<Vec<u8>, B> {
133        let mut atk_prepared: GGLWECiphertextPrepared<Vec<u8>, B> = GGLWECiphertextPrepared::alloc(
134            module,
135            self.basek(),
136            self.k(),
137            self.rows(),
138            self.digits(),
139            self.rank_in(),
140            self.rank_out(),
141        );
142        atk_prepared.prepare(module, self, scratch);
143        atk_prepared
144    }
145}
poulpy_core/layouts/prepared/gglwe_ct.rs

poulpy_core/layouts/prepared/
gglwe_ct.rs
