如何查看Navicate保存的密码

使用背景

在使用专业数据库软件Navicat 是都是习惯性的保存了默认密码，但是久而久之后 就会忘记数据库密码，然后自己也没备份，软件上面不可以直接查看填写密码， 这就很不舒服了，

但是，有个小技巧，可以查看navicat 已连接保存的密码。

第一步：首先去 导出连接

1.1导出连接获取到 connections.ncx 文件，选择需要导出的数据库


1.2 用notepad++打开，然后找到 文件里 password 字段的值

第二步：开始破译密码

2.1 打开在线php工具，地址：https://tool.lu/coderunner/
2.2 把代码（代码如下）粘上去就行，然后把刚复制的加密密码替换倒数第二行里的值 , 然后运行就行了

下面是代码：

<?php
namespace FatSmallTools;
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);
}
}


use FatSmallTools\NavicatPassword;

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

//解密
//$decode = $navicatPassword->decrypt('15057D7BA390');
$decode = $navicatPassword->decrypt('68700E7EA495');
echo $decode."\n";

第三步：注意乱码

可能解码的时候遇到乱码，这时只需要修改一下指定的版本就行了