/
sm4.go
101 lines (90 loc) · 2.6 KB
/
sm4.go
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package sm4
import (
"bytes"
"encoding/base32"
"encoding/base64"
"errors"
"github.com/rxlwin/g-pkg/jm/sm/md5"
OriginSm4 "github.com/tjfoc/gmsm/sm4"
"golang.org/x/text/encoding/simplifiedchinese"
"golang.org/x/text/transform"
"io"
)
// 最原始的加密
func JiaMi(key string, originByte []byte) ([]byte, error) {
JiaMiByte, err1 := OriginSm4.Sm4Ecb(FormatKey(key), originByte, true)
if err1 != nil {
return nil, errors.New("加密失败:" + err1.Error())
}
return JiaMiByte, nil
}
// 最原始的解密
func JieMi(key string, JiaMiByte []byte) ([]byte, error) {
JieMiByte, err := OriginSm4.Sm4Ecb(FormatKey(key), JiaMiByte, false)
if err != nil {
return nil, errors.New("解密错误:" + err.Error())
}
return JieMiByte, nil
}
// Base32加密
func JiaMiToBase32(key string, originByte []byte) (string, error) {
JiaMiByte, err0 := JiaMi(key, originByte)
if err0 != nil {
return "", err0
}
return base32.HexEncoding.WithPadding(base32.NoPadding).EncodeToString(JiaMiByte), nil
}
// Base32解密
func Base32JieMi(key, JiaMiStr string) ([]byte, error) {
JiaMiByte, err0 := base32.HexEncoding.WithPadding(base32.NoPadding).DecodeString(JiaMiStr)
if err0 != nil {
return nil, err0
}
return JieMi(key, JiaMiByte)
}
// 市特殊加密
func sJiaMi(key, originStr string) (string, error) {
oByte := []byte(originStr)
gbkByte, err0 := Utf8ToGbk(oByte)
if err0 != nil {
return "", errors.New("utf8转Gbk失败:" + err0.Error())
}
JiaMiByte, err1 := OriginSm4.Sm4Ecb([]byte(key), gbkByte, true)
if err1 != nil {
return "", errors.New("加密失败:" + err1.Error())
}
return base64.StdEncoding.EncodeToString(JiaMiByte), nil
}
// 市特殊解密
func sJieMi(key, JiaMiStr string) (string, error) {
oJieMiByte, err := base64.StdEncoding.DecodeString(JiaMiStr)
if err != nil {
return "", errors.New("16进制字符转字节错误: " + err.Error())
}
JieMiByte, err := OriginSm4.Sm4Ecb([]byte(key), oJieMiByte, false)
if err != nil {
return "", errors.New("解密错误:" + err.Error())
}
//fmt.Println("解密后(byte):", JieMiByte)
utf8JieMi, err := GbkToUtf8(JieMiByte)
return string(utf8JieMi), err
}
func GbkToUtf8(s []byte) ([]byte, error) {
reader := transform.NewReader(bytes.NewReader(s), simplifiedchinese.GBK.NewDecoder())
d, e := io.ReadAll(reader)
if e != nil {
return nil, e
}
return d, nil
}
func Utf8ToGbk(utf8Byte []byte) ([]byte, error) {
reader := transform.NewReader(bytes.NewReader(utf8Byte), simplifiedchinese.GBK.NewEncoder())
d, e := io.ReadAll(reader)
if e != nil {
return nil, e
}
return d, nil
}
func FormatKey(key string) []byte {
return md5.ToBytes(key)
}