1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
#[allow(unused_imports)]
use blst::*;
use core::ffi::c_void;
sppark::cuda_error!();
#[repr(C)]
pub enum NTTInputOutputOrder {
NN = 0,
NR = 1,
RN = 2,
RR = 3,
}
#[repr(C)]
pub enum NTTDirection {
Forward = 0,
Inverse = 1,
}
#[repr(C)]
pub enum NTTType {
Standard = 0,
Coset = 1,
}
extern "C" {
fn snarkvm_ntt(
inout: *mut core::ffi::c_void,
lg_domain_size: u32,
ntt_order: NTTInputOutputOrder,
ntt_direction: NTTDirection,
ntt_type: NTTType,
) -> cuda::Error;
fn snarkvm_polymul(
out: *mut core::ffi::c_void,
pcount: usize,
polynomials: *const core::ffi::c_void,
plens: *const core::ffi::c_void,
ecount: usize,
evaluations: *const core::ffi::c_void,
elens: *const core::ffi::c_void,
lg_domain_size: u32,
) -> cuda::Error;
fn snarkvm_msm(
out: *mut c_void,
points_with_infinity: *const c_void,
npoints: usize,
scalars: *const c_void,
ffi_affine_sz: usize,
) -> cuda::Error;
}
#[allow(non_snake_case)]
pub fn NTT<T>(
domain_size: usize,
inout: &mut [T],
ntt_order: NTTInputOutputOrder,
ntt_direction: NTTDirection,
ntt_type: NTTType,
) -> Result<(), cuda::Error> {
if (domain_size & (domain_size - 1)) != 0 {
panic!("domain_size is not power of 2");
}
let lg_domain_size = domain_size.trailing_zeros();
let err = unsafe {
snarkvm_ntt(inout.as_mut_ptr() as *mut core::ffi::c_void, lg_domain_size, ntt_order, ntt_direction, ntt_type)
};
if err.code != 0 {
return Err(err);
}
Ok(())
}
pub fn polymul<T: std::clone::Clone>(
domain: usize,
polynomials: &Vec<Vec<T>>,
evaluations: &Vec<Vec<T>>,
zero: &T,
) -> Result<Vec<T>, cuda::Error> {
let initial_domain_size = domain;
if (initial_domain_size & (initial_domain_size - 1)) != 0 {
panic!("domain_size is not power of 2");
}
let lg_domain_size = initial_domain_size.trailing_zeros();
let mut pptrs = Vec::new();
let mut plens = Vec::new();
for polynomial in polynomials {
pptrs.push(polynomial.as_ptr() as *const core::ffi::c_void);
plens.push(polynomial.len());
}
let mut eptrs = Vec::new();
let mut elens = Vec::new();
for evaluation in evaluations {
eptrs.push(evaluation.as_ptr() as *const core::ffi::c_void);
elens.push(evaluation.len());
}
let mut out = Vec::new();
out.resize(initial_domain_size, zero.clone());
let err = unsafe {
snarkvm_polymul(
out.as_mut_ptr() as *mut core::ffi::c_void,
pptrs.len(),
pptrs.as_ptr() as *const core::ffi::c_void,
plens.as_ptr() as *const core::ffi::c_void,
eptrs.len(),
eptrs.as_ptr() as *const core::ffi::c_void,
elens.as_ptr() as *const core::ffi::c_void,
lg_domain_size,
)
};
if err.code != 0 {
return Err(err);
}
Ok(out)
}
pub fn msm<Affine, Projective, Scalar>(points: &[Affine], scalars: &[Scalar]) -> Result<Projective, cuda::Error> {
let npoints = scalars.len();
if npoints > points.len() {
panic!("length mismatch {} points < {} scalars", npoints, scalars.len())
}
#[allow(clippy::uninit_assumed_init)]
let mut ret: Projective = unsafe { std::mem::MaybeUninit::uninit().assume_init() };
let err = unsafe {
snarkvm_msm(
&mut ret as *mut _ as *mut c_void,
points as *const _ as *const c_void,
npoints,
scalars as *const _ as *const c_void,
std::mem::size_of::<Affine>(),
)
};
if err.code != 0 {
return Err(err);
}
Ok(ret)
}