本文最后更新于 2024-05-31，文章内容可能已经过时。

Navicat保存密码破解

navicat使用遇到的问题：忘记已连接数据密码

一、选择想要获取密码的数据库

1、打开navicat，点击文件➡导出连接

2、勾选需要导出的连接，注意，一定要勾选“导出密码”，不然导出文件就不包含加密的密码。

二、导出文件获取加密密码

1、在导出位置找到connections.ncx文件，打开，在文件内找到password，然后复制出来

三、解密密码

1、打开 https://tool.lu/coderunner ，使用在线运行工具

2、粘贴如下代码

<?php
class NavicatPassword
{
    protected $version = 0;
    protected $aesKey = 'libcckeylibcckey';
    protected $aesIv = 'libcciv libcciv ';
    protected $blowString = '3DC5CA39';
    protected $blowKey = null;
    protected $blowIv = null;
   
    public function __construct($version = 12)
    {
        $this->version = $version;
        $this->blowKey = sha1('3DC5CA39', true);
        $this->blowIv = hex2bin('d9c7c3c8870d64bd');
    }
   
    public function encrypt($string)
    {
        $result = FALSE;
        switch ($this->version) {
            case 11:
                $result = $this->encryptEleven($string);
                break;
            case 12:
                $result = $this->encryptTwelve($string);
                break;
            default:
                break;
        }
       
        return $result;
    }
   
    protected function encryptEleven($string)
    {
        $round = intval(floor(strlen($string) / 8));
        $leftLength = strlen($string) % 8;
        $result = '';
        $currentVector = $this->blowIv;
       
        for ($i = 0; $i < $round; $i++) {
            $temp = $this->encryptBlock($this->xorBytes(substr($string, 8 * $i, 8), $currentVector));
            $currentVector = $this->xorBytes($currentVector, $temp);
            $result .= $temp;
        }
       
        if ($leftLength) {
            $currentVector = $this->encryptBlock($currentVector);
            $result .= $this->xorBytes(substr($string, 8 * $i, $leftLength), $currentVector);
        }
       
        return strtoupper(bin2hex($result));
    }
   
    protected function encryptBlock($block)
    {
        return openssl_encrypt($block, 'BF-ECB', $this->blowKey, OPENSSL_RAW_DATA|OPENSSL_NO_PADDING);
    }
   
    protected function decryptBlock($block)
    {
        return openssl_decrypt($block, 'BF-ECB', $this->blowKey, OPENSSL_RAW_DATA|OPENSSL_NO_PADDING);
    }
   
    protected function xorBytes($str1, $str2)
    {
        $result = '';
        for ($i = 0; $i < strlen($str1); $i++) {
            $result .= chr(ord($str1[$i]) ^ ord($str2[$i]));
        }
       
        return $result;
    }
   
    protected function encryptTwelve($string)
    {
        $result = openssl_encrypt($string, 'AES-128-CBC', $this->aesKey, OPENSSL_RAW_DATA, $this->aesIv);
        return strtoupper(bin2hex($result));
    }
   
    public function decrypt($string)
    {
        $result = FALSE;
        switch ($this->version) {
            case 11:
                $result = $this->decryptEleven($string);
                break;
            case 12:
                $result = $this->decryptTwelve($string);
                break;
            default:
                break;
        }
       
        return $result;
    }
   
    protected function decryptEleven($upperString)
    {
        $string = hex2bin(strtolower($upperString));
       
        $round = intval(floor(strlen($string) / 8));
        $leftLength = strlen($string) % 8;
        $result = '';
        $currentVector = $this->blowIv;
       
        for ($i = 0; $i < $round; $i++) {
            $encryptedBlock = substr($string, 8 * $i, 8);
            $temp = $this->xorBytes($this->decryptBlock($encryptedBlock), $currentVector);
            $currentVector = $this->xorBytes($currentVector, $encryptedBlock);
            $result .= $temp;
        }
       
        if ($leftLength) {
            $currentVector = $this->encryptBlock($currentVector);
            $result .= $this->xorBytes(substr($string, 8 * $i, $leftLength), $currentVector);
        }
       
        return $result;
    }
   
    protected function decryptTwelve($upperString)
    {
        $string = hex2bin(strtolower($upperString));
        return openssl_decrypt($string, 'AES-128-CBC', $this->aesKey, OPENSSL_RAW_DATA, $this->aesIv);
    }
};
 
 
//需要指定版本两种，11或12
//$navicatPassword = new NavicatPassword(11);
$navicatPassword = new NavicatPassword(11);
 
//解密
//$decode = $navicatPassword->decrypt('15057D7BA390');
$decode = $navicatPassword->decrypt('在此处粘贴复制出来的密码');
echo $decode."\n";
?>
PHP

3、指定版本11或12

//需要指定版本两种，11或12
//$navicatPassword = new NavicatPassword(11);
$navicatPassword = new NavicatPassword(11);
PHP

4、粘贴加密密码

//解密
//$decode = $navicatPassword->decrypt('15057D7BA390');
$decode = $navicatPassword->decrypt('在此处粘贴复制出来的密码');
PHP

5、点击在线运行工具执行按钮，解密成功，在右侧查看解密后的密码

image4-3.png