/
csputils.go
88 lines (71 loc) · 1.85 KB
/
csputils.go
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// Copyright Fuzamei Corp. 2018 All Rights Reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
package utils
import (
"crypto"
"crypto/ecdsa"
"crypto/x509"
"errors"
"fmt"
"github.com/33cn/plugin/plugin/dapp/cert/authority/tools/cryptogen/factory/csp"
"github.com/33cn/plugin/plugin/dapp/cert/authority/tools/cryptogen/factory/signer"
"github.com/tjfoc/gmsm/sm2"
)
func getCSPFromOpts(KeyStorePath string) (csp.CSP, error) {
if KeyStorePath == "" {
return nil, errors.New("Invalid config. It must not be nil")
}
fks, err := csp.NewFileBasedKeyStore(nil, KeyStorePath, false)
if err != nil {
return nil, fmt.Errorf("Failed to initialize software key store: %s", err)
}
return csp.New(fks)
}
// GeneratePrivateKey 生成私钥
func GeneratePrivateKey(keystorePath string, opt int) (csp.Key, crypto.Signer, error) {
var err error
var priv csp.Key
var s crypto.Signer
lcscp, err := getCSPFromOpts(keystorePath)
if err != nil {
return nil, nil, err
}
priv, err = lcscp.KeyGen(opt)
if err == nil {
s, err = signer.New(lcscp, priv)
}
return priv, s, err
}
// GetECPublicKey 获取ecdsa公钥
func GetECPublicKey(priv csp.Key) (*ecdsa.PublicKey, error) {
pubKey, err := priv.PublicKey()
if err != nil {
return nil, err
}
pubKeyBytes, err := pubKey.Bytes()
if err != nil {
return nil, err
}
ecPubKey, err := x509.ParsePKIXPublicKey(pubKeyBytes)
if err != nil {
return nil, err
}
return ecPubKey.(*ecdsa.PublicKey), nil
}
// GetSM2PublicKey 获取sm2公钥
func GetSM2PublicKey(priv csp.Key) (*sm2.PublicKey, error) {
pubKey, err := priv.PublicKey()
if err != nil {
return nil, err
}
pubKeyBytes, err := pubKey.Bytes()
if err != nil {
return nil, err
}
sm2PubKey, err := sm2.ParseSm2PublicKey(pubKeyBytes)
if err != nil {
return nil, err
}
return sm2PubKey, nil
}