cdle
99 lines
2.3 KiB
Go
99 lines
2.3 KiB
Go
package core
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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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"encoding/base64"
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"errors"
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"fmt"
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"regexp"
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"strings"
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)
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var PwdKey = []byte("xoxoslslgrgriiiixoxoslslgrgriiii")
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func pkcs7Padding(data []byte, blockSize int) []byte {
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padding := blockSize - len(data)%blockSize
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padText := bytes.Repeat([]byte{byte(padding)}, padding)
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return append(data, padText...)
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}
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func pkcs7UnPadding(data []byte) ([]byte, error) {
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length := len(data)
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if length == 0 {
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return nil, errors.New("加密字符串错误！")
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}
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unPadding := int(data[length-1])
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return data[:(length - unPadding)], nil
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}
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func AesEncrypt(data []byte, key []byte) ([]byte, error) {
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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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blockSize := block.BlockSize()
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encryptBytes := pkcs7Padding(data, blockSize)
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crypted := make([]byte, len(encryptBytes))
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blockMode := cipher.NewCBCEncrypter(block, key[:blockSize])
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blockMode.CryptBlocks(crypted, encryptBytes)
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return crypted, nil
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}
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func AesDecrypt(data []byte, key []byte) ([]byte, error) {
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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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blockSize := block.BlockSize()
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blockMode := cipher.NewCBCDecrypter(block, key[:blockSize])
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crypted := make([]byte, len(data))
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blockMode.CryptBlocks(crypted, data)
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crypted, err = pkcs7UnPadding(crypted)
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if err != nil {
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return nil, err
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}
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return crypted, nil
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}
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func EncryptByAes(data []byte) (string, error) {
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res, err := AesEncrypt(data, PwdKey)
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if err != nil {
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return "", err
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}
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return base64.StdEncoding.EncodeToString(res), nil
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}
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func DecryptByAes(data string) ([]byte, error) {
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dataByte, err := base64.StdEncoding.DecodeString(data)
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if err != nil {
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return nil, err
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}
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return AesDecrypt(dataByte, PwdKey)
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}
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func halfEct(str string) string {
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ss := regexp.MustCompile(`/\*hidden\*/([\s\S]+?)/\*neddih\*/`).FindAllString(str, -1)
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for _, v := range ss {
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// fmt.Println(v)
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// panic("")
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c_, _ := EncryptByAes([]byte(v))
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str = strings.Replace(str, v, fmt.Sprintf(`/** Here is hidden scripts %s */`, c_), 1)
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}
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return str
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}
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func halfDeEct(str string) string {
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ss := regexp.MustCompile(`/\*\* Here is hidden scripts ([\s\S]+?) \*/`).FindAllStringSubmatch(str, -1)
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for _, v := range ss {
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f := v[0]
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c := v[1]
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c_, _ := DecryptByAes(c)
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if c_ != nil {
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str = strings.Replace(str, f, string(c_), 1)
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}
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}
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return str
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}
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