解决Navicat数据库连接成功但密码忘记的问题_大数据

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";