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sk.go
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sk.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/ecdsa"
"crypto/rand"
"crypto/x509"
"io"
"github.com/hyperledger/fabric/core/crypto/primitives"
)
type secretKeyImpl struct {
priv *ecdsa.PrivateKey
pub primitives.PublicKey
params *Params
rand io.Reader
}
func (sk *secretKeyImpl) IsPublic() bool {
return false
}
func (sk *secretKeyImpl) GetRand() io.Reader {
return sk.rand
}
func (sk *secretKeyImpl) GetPublicKey() primitives.PublicKey {
if sk.pub == nil {
sk.pub = &publicKeyImpl{&sk.priv.PublicKey, sk.rand, sk.params}
}
return sk.pub
}
type secretKeySerializerImpl struct{}
func (sks *secretKeySerializerImpl) ToBytes(key interface{}) ([]byte, error) {
if key == nil {
return nil, primitives.ErrInvalidNilKeyParameter
}
switch sk := key.(type) {
case *secretKeyImpl:
return x509.MarshalECPrivateKey(sk.priv)
default:
return nil, primitives.ErrInvalidKeyParameter
}
}
func (sks *secretKeySerializerImpl) FromBytes(bytes []byte) (interface{}, error) {
key, err := x509.ParseECPrivateKey(bytes)
if err != nil {
return nil, err
}
// TODO: add params here
return &secretKeyImpl{key, nil, nil, rand.Reader}, nil
}