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