forked from dinstein/fabric
/
kg.go
71 lines (57 loc) · 1.63 KB
/
kg.go
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/*
Copyright IBM Corp. 2016 All Rights Reserved.
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 ecies
import (
"crypto/elliptic"
"fmt"
"io"
"github.com/abchain/fabric/core/crypto/primitives"
)
type keyGeneratorParameterImpl struct {
rand io.Reader
curve elliptic.Curve
params *Params
}
type keyGeneratorImpl struct {
isForEncryption bool
params *keyGeneratorParameterImpl
}
func (kgp keyGeneratorParameterImpl) GetRand() io.Reader {
return kgp.rand
}
func (kg *keyGeneratorImpl) Init(params primitives.KeyGeneratorParameters) error {
if params == nil {
return primitives.ErrInvalidKeyGeneratorParameter
}
switch kgparams := params.(type) {
case *keyGeneratorParameterImpl:
kg.params = kgparams
default:
return primitives.ErrInvalidKeyGeneratorParameter
}
return nil
}
func (kg *keyGeneratorImpl) GenerateKey() (primitives.PrivateKey, error) {
if kg.params == nil {
return nil, fmt.Errorf("Key Generator not initliazed")
}
privKey, err := eciesGenerateKey(
kg.params.rand,
kg.params.curve,
kg.params.params,
)
if err != nil {
return nil, err
}
return &secretKeyImpl{privKey, nil, kg.params.params, kg.params.rand}, nil
}