解决Navicat数据库连接成功但密码忘记的问题

解决方法

一：通过注册表找到数据库连接的密码，再通过PHP解密

具体操作：

1.用 win + R 快捷键打开运行窗口，输入 regedit 打开注册表

2.在注册表地址栏输入下面内容，查找Navicat密码保存位置，回车:

计算机\\HKEY_CURRENT_USER\\SOFTWARE\\PremiumSoft\\Navicat\\Servers

3.在servers目录下，找到需要找回密码的连接，鼠标左键点击，右侧下拉找到名称为 pwd 的一项，该项的数据即为密码。右键，点击修改，复制数据：

4.使用https://tool.lu/coderunner/在线工具，对复制下来的密码15057D7BA390进行解密

5.将以下php解密代码复制到在线工具中，将复制的数据粘贴到代码的倒数第二行，点击执行，即可得到密码

PS：该工具首行不能空行，否则执行会报错；另外，在代码倒数五六行需要指定Navicat版本

<?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(12);
$navicatPassword = new NavicatPassword(11);
//解密
$decode = $navicatPassword->decrypt(\’15057D7BA390\’);
echo $decode.\”\\n\”;