1use backend::hal::{
 2    api::{VmpPMatAlloc, VmpPMatAllocBytes, VmpPMatPrepare},
 3    layouts::{Backend, Data, DataMut, DataRef, Module, Scratch, VmpPMat},
 4};
 5
 6use crate::layouts::{GGLWEAutomorphismKey, Infos, prepared::GGLWESwitchingKeyExec};
 7
 8#[derive(PartialEq, Eq)]
 9pub struct GGLWEAutomorphismKeyExec<D: Data, B: Backend> {
10    pub(crate) key: GGLWESwitchingKeyExec<D, B>,
11    pub(crate) p: i64,
12}
13
14impl<B: Backend> GGLWEAutomorphismKeyExec<Vec<u8>, B> {
15    pub fn alloc(module: &Module<B>, n: usize, basek: usize, k: usize, rows: usize, digits: usize, rank: usize) -> Self
16    where
17        Module<B>: VmpPMatAlloc<B>,
18    {
19        GGLWEAutomorphismKeyExec::<Vec<u8>, B> {
20            key: GGLWESwitchingKeyExec::alloc(module, n, basek, k, rows, digits, rank, rank),
21            p: 0,
22        }
23    }
24
25    pub fn bytes_of(module: &Module<B>, n: usize, basek: usize, k: usize, rows: usize, digits: usize, rank: usize) -> usize
26    where
27        Module<B>: VmpPMatAllocBytes,
28    {
29        GGLWESwitchingKeyExec::bytes_of(module, n, basek, k, rows, digits, rank, rank)
30    }
31
32    pub fn from<DataOther: DataRef>(module: &Module<B>, other: &GGLWEAutomorphismKey<DataOther>, scratch: &mut Scratch<B>) -> Self
33    where
34        Module<B>: VmpPMatAlloc<B> + VmpPMatPrepare<B>,
35    {
36        let mut atk_exec: GGLWEAutomorphismKeyExec<Vec<u8>, B> = Self::alloc(
37            module,
38            other.n(),
39            other.basek(),
40            other.k(),
41            other.rows(),
42            other.digits(),
43            other.rank(),
44        );
45        atk_exec.prepare(module, other, scratch);
46        atk_exec
47    }
48}
49
50impl<D: Data, B: Backend> Infos for GGLWEAutomorphismKeyExec<D, B> {
51    type Inner = VmpPMat<D, B>;
52
53    fn inner(&self) -> &Self::Inner {
54        &self.key.inner()
55    }
56
57    fn basek(&self) -> usize {
58        self.key.basek()
59    }
60
61    fn k(&self) -> usize {
62        self.key.k()
63    }
64}
65
66impl<D: Data, B: Backend> GGLWEAutomorphismKeyExec<D, B> {
67    pub fn p(&self) -> i64 {
68        self.p
69    }
70
71    pub fn digits(&self) -> usize {
72        self.key.digits()
73    }
74
75    pub fn rank(&self) -> usize {
76        self.key.rank()
77    }
78
79    pub fn rank_in(&self) -> usize {
80        self.key.rank_in()
81    }
82
83    pub fn rank_out(&self) -> usize {
84        self.key.rank_out()
85    }
86}
87
88impl<D: DataMut, B: Backend> GGLWEAutomorphismKeyExec<D, B> {
89    pub fn prepare<DataOther>(&mut self, module: &Module<B>, other: &GGLWEAutomorphismKey<DataOther>, scratch: &mut Scratch<B>)
90    where
91        DataOther: DataRef,
92        Module<B>: VmpPMatPrepare<B>,
93    {
94        self.key.prepare(module, &other.key, scratch);
95        self.p = other.p;
96    }
97}