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fd62fe5ae8
Resolves #191 and #113 --------- Co-authored-by: DmytroTym <dmytrotym1@gmail.com> Co-authored-by: ImmanuelSegol <3ditds@gmail.com>
103 lines
2.8 KiB
Go
103 lines
2.8 KiB
Go
// Copyright 2023 Ingonyama
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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// Code generated by Ingonyama DO NOT EDIT
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package bls12381
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import (
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"encoding/binary"
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"unsafe"
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)
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// #cgo CFLAGS: -I./include/
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// #cgo CFLAGS: -I/usr/local/cuda/include
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// #cgo LDFLAGS: -L${SRCDIR}/../../ -lbls12_381
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// #include "projective.h"
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// #include "ve_mod_mult.h"
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import "C"
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// G2 extension field
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type G2Element [6]uint64
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type ExtentionField struct {
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A0, A1 G2Element
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}
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type G2PointAffine struct {
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X, Y ExtentionField
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}
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type G2Point struct {
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X, Y, Z ExtentionField
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}
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func (p *G2Point) Random() *G2Point {
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outC := (*C.BLS12_381_g2_projective_t)(unsafe.Pointer(p))
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C.random_g2_projective_bls12_381(outC)
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return p
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}
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func (p *G2Point) FromAffine(affine *G2PointAffine) *G2Point {
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out := (*C.BLS12_381_g2_projective_t)(unsafe.Pointer(p))
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in := (*C.BLS12_381_g2_affine_t)(unsafe.Pointer(affine))
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C.g2_projective_from_affine_bls12_381(out, in)
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return p
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}
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func (p *G2Point) Eq(pCompare *G2Point) bool {
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// Cast *PointBLS12_381 to *C.BLS12_381_projective_t
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// The unsafe.Pointer cast is necessary because Go doesn't allow direct casts
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// between different pointer types.
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// It's your responsibility to ensure that the types are compatible.
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pC := (*C.BLS12_381_g2_projective_t)(unsafe.Pointer(p))
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pCompareC := (*C.BLS12_381_g2_projective_t)(unsafe.Pointer(pCompare))
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// Call the C function
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// The C function doesn't keep any references to the data,
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// so it's fine if the Go garbage collector moves or deletes the data later.
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return bool(C.eq_g2_bls12_381(pC, pCompareC))
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}
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func (f *G2Element) ToBytesLe() []byte {
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var bytes []byte
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for _, val := range f {
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buf := make([]byte, 8) // 8 bytes because uint64 is 64-bit
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binary.LittleEndian.PutUint64(buf, val)
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bytes = append(bytes, buf...)
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}
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return bytes
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}
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func (p *G2PointAffine) FromProjective(projective *G2Point) *G2PointAffine {
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out := (*C.BLS12_381_g2_affine_t)(unsafe.Pointer(p))
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in := (*C.BLS12_381_g2_projective_t)(unsafe.Pointer(projective))
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C.g2_projective_to_affine_bls12_381(out, in)
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return p
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}
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func (p *G2Point) IsOnCurve() bool {
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// Directly copy memory from the C struct to the Go struct
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point := (*C.BLS12_381_g2_projective_t)(unsafe.Pointer(p))
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res := C.g2_projective_is_on_curve_bls12_381(point)
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return bool(res)
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}
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