fix: 修改加解密问题

Author: super321

internal/app/iptv/crypto.go

@@ -1,47 +1,12 @@
 package iptv
 
 import (
-	"bytes"
-	"crypto/des"
 	"encoding/hex"
-	"errors"
 	"strings"
 
 	"github.com/forgoer/openssl"
 )
 
-// pad 补码函数，将文本填充至块大小的倍数（8字节）
-func pad(src []byte) []byte {
-	padding := des.BlockSize - len(src)%des.BlockSize
-	padText := bytes.Repeat([]byte{byte(padding)}, padding)
-	return append(src, padText...)
-}
-
-// unPad 去补码函数，移除填充的数据
-func unPad(src []byte) ([]byte, error) {
-	length := len(src)
-	if length == 0 {
-		return nil, errors.New("input is empty")
-	}
-
-	// 获取填充的长度
-	unPadding := int(src[length-1])
-
-	// 检查填充长度是否有效
-	if unPadding <= 0 || unPadding > length {
-		return nil, errors.New("invalid padding size")
-	}
-
-	return src[:(length - unPadding)], nil
-}
-
-// removePaddingCharacters 去除补码字符
-func removePaddingCharacters(src []byte) ([]byte, error) {
-	// 去除 '\x08' 字符
-	src = bytes.ReplaceAll(src, []byte{'\x08'}, []byte{})
-	return src, nil
-}
-
 type TripleDESCrypto struct {
 	key []byte
 }
@@ -62,9 +27,7 @@ func NewTripleDESCrypto(key string) *TripleDESCrypto {
 
 // ECBEncrypt 加密函数，返回十六进制字符串
 func (c *TripleDESCrypto) ECBEncrypt(plainText string) (string, error) {
-	// 补码
-	paddedText := pad([]byte(plainText))
-	encrypted, err := openssl.Des3ECBEncrypt(paddedText, c.key, openssl.PKCS7_PADDING)
+	encrypted, err := openssl.Des3ECBEncrypt([]byte(plainText), c.key, openssl.PKCS7_PADDING)
 	if err != nil {
 		return "", err
 	}
@@ -84,11 +47,5 @@ func (c *TripleDESCrypto) ECBDecrypt(cipherText string) (string, error) {
 		return "", err
 	}
 
-	// 去除补码
-	result, err := removePaddingCharacters(decrypted)
-	if err != nil {
-		return "", err
-	}
-
-	return string(result), nil
+	return string(decrypted), nil
 }