forked from casdoor/casdoor
60 lines
1.8 KiB
Go
60 lines
1.8 KiB
Go
// Copyright 2023 The casbin Authors. All Rights Reserved.
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//
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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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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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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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package object
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import (
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"crypto/ecdsa"
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"crypto/elliptic"
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"crypto/rand"
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"crypto/x509"
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"encoding/pem"
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"fmt"
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"strings"
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)
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// generateEccKey generates a public and private key pair.(NIST P-256)
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func generateEccKey() *ecdsa.PrivateKey {
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privateKey, _ := ecdsa.GenerateKey(elliptic.P256(), rand.Reader)
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return privateKey
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}
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// encodeEccKey Return the input private key object as string type private key
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func encodeEccKey(privateKey *ecdsa.PrivateKey) string {
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x509Encoded, err := x509.MarshalECPrivateKey(privateKey)
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if err != nil {
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panic(err)
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}
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pemEncoded := pem.EncodeToMemory(&pem.Block{Type: "EC PRIVATE KEY", Bytes: x509Encoded})
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return string(pemEncoded)
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}
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// decodeEccKey Return the entered private key string as a private key object that can be used
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func decodeEccKey(pemEncoded string) (*ecdsa.PrivateKey, error) {
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pemEncoded = strings.ReplaceAll(pemEncoded, "\\n", "\n")
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block, _ := pem.Decode([]byte(pemEncoded))
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if block == nil {
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return nil, fmt.Errorf("decodeEccKey() error, block should not be nil")
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}
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x509Encoded := block.Bytes
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privateKey, err := x509.ParseECPrivateKey(x509Encoded)
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if err != nil {
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return nil, err
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}
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return privateKey, nil
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}
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