first commit

core/encrypt.go

@@ -0,0 +1,98 @@
+package core
+
+import (
+	"bytes"
+	"crypto/aes"
+	"crypto/cipher"
+	"encoding/base64"
+	"errors"
+	"fmt"
+	"regexp"
+	"strings"
+)
+
+var PwdKey = []byte("xoxoslslgrgriiiixoxoslslgrgriiii")
+
+func pkcs7Padding(data []byte, blockSize int) []byte {
+	padding := blockSize - len(data)%blockSize
+	padText := bytes.Repeat([]byte{byte(padding)}, padding)
+	return append(data, padText...)
+}
+
+func pkcs7UnPadding(data []byte) ([]byte, error) {
+	length := len(data)
+	if length == 0 {
+		return nil, errors.New("加密字符串错误！")
+	}
+	unPadding := int(data[length-1])
+	return data[:(length - unPadding)], nil
+}
+
+func AesEncrypt(data []byte, key []byte) ([]byte, error) {
+	block, err := aes.NewCipher(key)
+	if err != nil {
+		return nil, err
+	}
+	blockSize := block.BlockSize()
+	encryptBytes := pkcs7Padding(data, blockSize)
+	crypted := make([]byte, len(encryptBytes))
+	blockMode := cipher.NewCBCEncrypter(block, key[:blockSize])
+	blockMode.CryptBlocks(crypted, encryptBytes)
+	return crypted, nil
+}
+
+func AesDecrypt(data []byte, key []byte) ([]byte, error) {
+	block, err := aes.NewCipher(key)
+	if err != nil {
+		return nil, err
+	}
+	blockSize := block.BlockSize()
+	blockMode := cipher.NewCBCDecrypter(block, key[:blockSize])
+	crypted := make([]byte, len(data))
+	blockMode.CryptBlocks(crypted, data)
+	crypted, err = pkcs7UnPadding(crypted)
+	if err != nil {
+		return nil, err
+	}
+	return crypted, nil
+}
+
+func EncryptByAes(data []byte) (string, error) {
+	res, err := AesEncrypt(data, PwdKey)
+	if err != nil {
+		return "", err
+	}
+	return base64.StdEncoding.EncodeToString(res), nil
+}
+
+func DecryptByAes(data string) ([]byte, error) {
+	dataByte, err := base64.StdEncoding.DecodeString(data)
+	if err != nil {
+		return nil, err
+	}
+	return AesDecrypt(dataByte, PwdKey)
+}
+
+func halfEct(str string) string {
+	ss := regexp.MustCompile(`/\*hidden\*/([\s\S]+?)/\*neddih\*/`).FindAllString(str, -1)
+	for _, v := range ss {
+		fmt.Println(v)
+		// panic("")
+		c_, _ := EncryptByAes([]byte(v))
+		str = strings.Replace(str, v, fmt.Sprintf(`/** Here is hidden scripts %s */`, c_), 1)
+	}
+	return str
+}
+
+func halfDeEct(str string) string {
+	ss := regexp.MustCompile(`/\*\* Here is hidden scripts ([\s\S]+?) \*/`).FindAllStringSubmatch(str, -1)
+	for _, v := range ss {
+		f := v[0]
+		c := v[1]
+		c_, _ := DecryptByAes(c)
+		if c_ != nil {
+			str = strings.Replace(str, f, string(c_), 1)
+		}
+	}
+	return str
+}