GOLANG 加密,解密,GUID 小方法
/*** 用于加密,解密,(包含MD5加密和base64加密/解密)以及GUID的生成
* 时间:
* zhifieya
*/
package safe
import (
"crypto/md5"
"crypto/rand"
"crypto/sha1"
"encoding/base64"
"encoding/hex"
"io"
"strings"
)
const (
//BASE64字符表,不要有重复
base64Table = ":;',./?~!@#$CDVWX%^&*ABYZabcghijklmnopqrstuvwxyz01EFGHIJKLMNOPQRSTU2345678(def)_+|{}[]9/"
hashFunctionHeader = "zh.ife.iya"
hashFunctionFooter = "09.O25.O20.78"
)
/**
* 对一个字符串进行MD5加密,不可解密
*/
func GetMd5String(s string) string {
h := md5.New()
h.Write([]byte(s)) //使用zhifeiya名字做散列值，设定后不要变
return hex.EncodeToString(h.Sum(nil))
}
/*获取 SHA1 字符串*/
func GetSHA1String(s string) string {
t := sha1.New()
t.Write([]byte(s))
return hex.EncodeToString(t.Sum(nil))
}
/**
* 获取一个Guid值
*/
func GetGuid() string {
b := make([]byte, 48)
if _, err := io.ReadFull(rand.Reader, b); err != nil {
return ""
}
return GetMd5String(base64.URLEncoding.EncodeToString(b))
}
var coder = base64.NewEncoding(base64Table)
/**
* base64加密
*/
func Base64Encode(str string) string {
var src []byte = []byte(hashFunctionHeader + str + hashFunctionFooter)
return string([]byte(coder.EncodeToString(src)))
}
/**
* base64解密
*/
func Base64Decode(str string) (string, error) {
var src []byte = []byte(str)
by, err := coder.DecodeString(string(src))
return strings.Replace(strings.Replace(string(by), hashFunctionHeader, "", -1), hashFunctionFooter, "", -1), err
}
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