65 lines
1.7 KiB
Go
65 lines
1.7 KiB
Go
/*
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Copyright IBM Corp. 2016 All Rights Reserved.
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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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http://www.apache.org/licenses/LICENSE-2.0
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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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*/
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package sw
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import (
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"crypto/sha256"
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"errors"
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"github.com/hyperledger/fabric/bccsp"
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)
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type aesPrivateKey struct {
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privKey []byte
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exportable bool
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}
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// Bytes converts this key to its byte representation,
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// if this operation is allowed.
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func (k *aesPrivateKey) Bytes() (raw []byte, err error) {
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if k.exportable {
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return k.privKey, nil
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}
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return nil, errors.New("Not supported.")
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}
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// SKI returns the subject key identifier of this key.
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func (k *aesPrivateKey) SKI() (ski []byte) {
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hash := sha256.New()
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hash.Write([]byte{0x01})
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hash.Write(k.privKey)
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return hash.Sum(nil)
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}
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// Symmetric returns true if this key is a symmetric key,
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// false if this key is asymmetric
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func (k *aesPrivateKey) Symmetric() bool {
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return true
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}
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// Private returns true if this key is a private key,
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// false otherwise.
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func (k *aesPrivateKey) Private() bool {
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return true
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}
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// PublicKey returns the corresponding public key part of an asymmetric public/private key pair.
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// This method returns an error in symmetric key schemes.
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func (k *aesPrivateKey) PublicKey() (bccsp.Key, error) {
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return nil, errors.New("Cannot call this method on a symmetric key.")
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}
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