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group.go
54 lines (46 loc) · 1.33 KB
/
group.go
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/*
* Copyright 2017 XLAB d.o.o.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*
*/
package compat
import (
"fmt"
"math/big"
"github.com/emmyzkp/crypto/schnorr"
)
// SchnorrGroup represents an equivalent of schnorr.Group, but has string
// field types to overcome type restrictions of Go language binding tools.
type SchnorrGroup struct {
P string
G string
Q string
}
func NewSchnorrGroup(p, g, q string) *SchnorrGroup {
return &SchnorrGroup{
P: p,
G: g,
Q: q,
}
}
func (sg *SchnorrGroup) toNativeType() (*schnorr.Group, error) {
p, pOk := new(big.Int).SetString(sg.P, 10)
g, gOk := new(big.Int).SetString(sg.G, 10)
q, qOk := new(big.Int).SetString(sg.Q, 10)
if !pOk || !gOk || !qOk {
return nil, fmt.Errorf("groups's p, g or q: %s", ArgsConversionError)
}
group := schnorr.NewGroupFromParams(p, g, q)
return group, nil
}