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pem.go
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pem.go
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/*
Copyright Zhigui.com. All Rights Reserved.
SPDX-License-Identifier: Apache-2.0
*/
package utils
import (
"encoding/pem"
"io/ioutil"
"os"
"github.com/pkg/errors"
gm_plugins "github.com/zhigui-projects/gm-plugins"
"github.com/zhigui-projects/gm-plugins/primitive"
)
func WritePrivateKeyToPem(FileName string, key *primitive.Sm2PrivateKey, pwd []byte) (bool, error) {
var block *pem.Block
der, err := gm_plugins.GetSmCryptoSuite().MarshalSm2PrivateKey(key, pwd)
if err != nil {
return false, err
}
if pwd != nil {
block = &pem.Block{
Type: "ENCRYPTED SM2 PRIVATE KEY",
Bytes: der,
}
} else {
block = &pem.Block{
Type: "SM2 PRIVATE KEY",
Bytes: der,
}
}
file, err := os.Create(FileName)
if err != nil {
return false, err
}
defer file.Close()
err = pem.Encode(file, block)
if err != nil {
return false, err
}
return true, nil
}
func ReadPrivateKeyFromPem(fileName string, pwd []byte) (*primitive.Sm2PrivateKey, error) {
data, err := ioutil.ReadFile(fileName)
if err != nil {
return nil, err
}
block, _ := pem.Decode(data)
if block == nil {
return nil, errors.New("failed to decode private key")
}
return gm_plugins.GetSmCryptoSuite().ParsePKCS8PrivateKey(block.Bytes, pwd)
}
func ReadPublicKeyFromPem(fileName string, pwd []byte) (*primitive.Sm2PublicKey, error) {
data, err := ioutil.ReadFile(fileName)
if err != nil {
return nil, err
}
block, _ := pem.Decode(data)
if block == nil || block.Type != "PUBLIC KEY" {
return nil, errors.Errorf("failed to decode public key")
}
return gm_plugins.GetSmCryptoSuite().ParseSm2PublicKey(block.Bytes)
}
func WritePublicKeyToPem(FileName string, key *primitive.Sm2PublicKey, _ []byte) (bool, error) {
der, err := gm_plugins.GetSmCryptoSuite().MarshalSm2PublicKey(key)
if err != nil {
return false, err
}
block := &pem.Block{
Type: "PUBLIC KEY",
Bytes: der,
}
file, err := os.Create(FileName)
defer file.Close()
if err != nil {
return false, err
}
err = pem.Encode(file, block)
if err != nil {
return false, err
}
return true, nil
}