/
parse.go
133 lines (103 loc) · 3.26 KB
/
parse.go
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package sm2
import (
"errors"
"encoding/pem"
"github.com/deatil/go-cryptobin/pkcs1"
"github.com/deatil/go-cryptobin/pkcs8"
"github.com/deatil/go-cryptobin/gm/sm2"
)
var (
ErrKeyMustBePEMEncoded = errors.New("invalid key: Key must be a PEM encoded PKCS1 or PKCS8 key")
ErrNotECPrivateKey = errors.New("key is not a valid SM2 private key")
)
// 解析私钥,默认为 PKCS8
func (this SM2) ParsePrivateKeyFromPEM(key []byte) (*sm2.PrivateKey, error) {
return this.ParsePKCS8PrivateKeyFromPEM(key)
}
// 解析私钥带密码,默认为 PKCS8
func (this SM2) ParsePrivateKeyFromPEMWithPassword(key []byte, password string) (*sm2.PrivateKey, error) {
return this.ParsePKCS8PrivateKeyFromPEMWithPassword(key, password)
}
// ==========
// 解析 PKCS1 私钥
func (this SM2) ParsePKCS1PrivateKeyFromPEM(key []byte) (*sm2.PrivateKey, error) {
var err error
// Parse PEM block
var block *pem.Block
if block, _ = pem.Decode(key); block == nil {
return nil, ErrKeyMustBePEMEncoded
}
// Parse the key
var pkey *sm2.PrivateKey
if pkey, err = sm2.ParseSM2PrivateKey(block.Bytes); err != nil {
return nil, err
}
return pkey, nil
}
// 解析 PKCS1 私钥带密码
func (this SM2) ParsePKCS1PrivateKeyFromPEMWithPassword(key []byte, password string) (*sm2.PrivateKey, error) {
var err error
// Parse PEM block
var block *pem.Block
if block, _ = pem.Decode(key); block == nil {
return nil, ErrKeyMustBePEMEncoded
}
var blockDecrypted []byte
if blockDecrypted, err = pkcs1.DecryptPEMBlock(block, []byte(password)); err != nil {
return nil, err
}
// Parse the key
var pkey *sm2.PrivateKey
if pkey, err = sm2.ParseSM2PrivateKey(blockDecrypted); err != nil {
return nil, err
}
return pkey, nil
}
// ==========
// 解析 PKCS8 私钥
func (this SM2) ParsePKCS8PrivateKeyFromPEM(key []byte) (*sm2.PrivateKey, error) {
var err error
// Parse PEM block
var block *pem.Block
if block, _ = pem.Decode(key); block == nil {
return nil, ErrKeyMustBePEMEncoded
}
var pkey *sm2.PrivateKey
if pkey, err = sm2.ParsePrivateKey(block.Bytes); err != nil {
return nil, err
}
return pkey, nil
}
// 解析 PKCS8 带密码的私钥
func (this SM2) ParsePKCS8PrivateKeyFromPEMWithPassword(key []byte, password string) (*sm2.PrivateKey, error) {
var err error
// Parse PEM block
var block *pem.Block
if block, _ = pem.Decode(key); block == nil {
return nil, ErrKeyMustBePEMEncoded
}
var blockDecrypted []byte
if blockDecrypted, err = pkcs8.DecryptPEMBlock(block, []byte(password)); err != nil {
return nil, err
}
var pkey *sm2.PrivateKey
if pkey, err = sm2.ParsePrivateKey(blockDecrypted); err != nil {
return nil, err
}
return pkey, nil
}
// ==========
// 解析公钥
func (this SM2) ParsePublicKeyFromPEM(key []byte) (*sm2.PublicKey, error) {
var err error
// Parse PEM block
var block *pem.Block
if block, _ = pem.Decode(key); block == nil {
return nil, ErrKeyMustBePEMEncoded
}
var pkey *sm2.PublicKey
if pkey, err = sm2.ParsePublicKey(block.Bytes); err != nil {
return nil, err
}
return pkey, nil
}