Files
ArmedPolice/utils/encrypt.go

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2021-11-02 09:43:19 +08:00
package utils
import (
"bytes"
"crypto/aes"
"crypto/cipher"
"crypto/md5"
"crypto/sha1"
"crypto/sha256"
"crypto/sha512"
"encoding/base64"
"encoding/hex"
"github.com/speps/go-hashids"
"strings"
"golang.org/x/crypto/bcrypt"
)
// salt 盐值
const salt = "CHeF6AC392"
func Base64Encode(src string) string {
return base64.StdEncoding.EncodeToString([]byte(src))
}
func Base64Decode(src string) []byte {
_bytes, _ := base64.StdEncoding.DecodeString(src)
return _bytes
}
// Md5String
func Md5String(s string, salt ...string) string {
h := md5.New()
if len(salt) > 0 {
s += strings.Join(salt, "")
}
h.Write([]byte(s))
return hex.EncodeToString(h.Sum(nil))
}
// Sha1String
func Sha1String(s string) string {
h := sha1.New()
h.Write([]byte(s))
return hex.EncodeToString(h.Sum(nil))
}
// Sha256String
func Sha256String(s string) string {
h := sha256.New()
h.Write([]byte(s))
return hex.EncodeToString(h.Sum(nil))
}
// Sha512String
func Sha512String(s string) string {
h := sha512.New()
h.Write([]byte(s))
return hex.EncodeToString(h.Sum(nil))
}
func HashString(s []byte) string {
hash, _ := bcrypt.GenerateFromPassword(s, bcrypt.DefaultCost)
return string(hash)
}
func HashCompare(src, compare []byte) bool {
return bcrypt.CompareHashAndPassword(src, compare) == nil
}
// HASHIDEncode 混淆
func HASHIDEncode(src int) string {
hd := hashids.NewData()
hd.Salt = salt
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hd.MinLength = 10
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h := hashids.NewWithData(hd)
e, _ := h.Encode([]int{src})
return e
}
// HASHIDDecode 还原混淆
func HASHIDDecode(src string) int {
hd := hashids.NewData()
hd.Salt = salt
h := hashids.NewWithData(hd)
e, _ := h.DecodeWithError(src)
return e[0]
}
// Padding 对明文进行填充
func Padding(plainText []byte, blockSize int) []byte {
n := blockSize - len(plainText)%blockSize
temp := bytes.Repeat([]byte{byte(n)}, n)
plainText = append(plainText, temp...)
return plainText
}
// UnPadding 对密文删除填充
func UnPadding(cipherText []byte) []byte {
end := cipherText[len(cipherText)-1]
cipherText = cipherText[:len(cipherText)-int(end)]
return cipherText
}
// AESCBCEncrypt AEC加密CBC模式
func AESCBCEncrypt(plainText, key, iv []byte) ([]byte, error) {
//指定加密算法返回一个AES算法的Block接口对象
block, err := aes.NewCipher(key)
if err != nil {
return nil, err
}
//进行填充
plainText = Padding(plainText, block.BlockSize())
//指定分组模式返回一个BlockMode接口对象
blockMode := cipher.NewCBCEncrypter(block, iv)
//加密连续数据库
cipherText := make([]byte, len(plainText))
blockMode.CryptBlocks(cipherText, plainText)
//返回密文
return cipherText, nil
}
// AESCBCDecrypt AEC解密CBC模式
func AESCBCDecrypt(cipherText, key, iv []byte) ([]byte, error) {
//指定解密算法返回一个AES算法的Block接口对象
block, err := aes.NewCipher(key)
if err != nil {
return nil, err
}
//指定分组模式返回一个BlockMode接口对象
blockMode := cipher.NewCBCDecrypter(block, iv)
//解密
plainText := make([]byte, len(cipherText))
blockMode.CryptBlocks(plainText, cipherText)
//删除填充
plainText = UnPadding(plainText)
return plainText, nil
}