/
site_cert_ecc.go
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/
site_cert_ecc.go
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// Copyright 2023 The casbin Authors. 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 object
import (
"crypto/ecdsa"
"crypto/elliptic"
"crypto/rand"
"crypto/x509"
"encoding/pem"
"fmt"
"strings"
)
// generateEccKey generates a public and private key pair.(NIST P-256)
func generateEccKey() *ecdsa.PrivateKey {
privateKey, _ := ecdsa.GenerateKey(elliptic.P256(), rand.Reader)
return privateKey
}
// encodeEccKey Return the input private key object as string type private key
func encodeEccKey(privateKey *ecdsa.PrivateKey) string {
x509Encoded, err := x509.MarshalECPrivateKey(privateKey)
if err != nil {
panic(err)
}
pemEncoded := pem.EncodeToMemory(&pem.Block{Type: "EC PRIVATE KEY", Bytes: x509Encoded})
return string(pemEncoded)
}
// decodeEccKey Return the entered private key string as a private key object that can be used
func decodeEccKey(pemEncoded string) (*ecdsa.PrivateKey, error) {
pemEncoded = strings.ReplaceAll(pemEncoded, "\\n", "\n")
block, _ := pem.Decode([]byte(pemEncoded))
if block == nil {
return nil, fmt.Errorf("decodeEccKey() error, block should not be nil")
}
x509Encoded := block.Bytes
privateKey, err := x509.ParseECPrivateKey(x509Encoded)
if err != nil {
return nil, err
}
return privateKey, nil
}