两步找回通过Navicat找回mysql密码(navicat15版本同样适用)

前言

如果忘记了mysql密码，但是Navicat中有之前的连接，可以通过以下步骤进行密码找回

1.查找注册表：

计算机\HKEY_CURRENT_USER\SOFTWARE\PremiumSoft\Navicat\Servers\，找到执行的Navicat的数据库连接，点击后找到Pwd对应的值，复制到剪贴板中

2.执行php程序反编译密码

将复制的值放入下面代码倒数第二行处，然后点击右上角执行

在线运行代码地址：在线运行php代码

运行代码：

<?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, $this->aesIv);
	}
}
use FatSmallTools\NavicatPassword;
//需要指定版本，11或12   11查不到就用12
//$navicatPassword = new NavicatPassword(12);
$navicatPassword = new NavicatPassword(11);
//解密
$decode = $navicatPassword->decrypt('C43E93D0E270953975');
echo $decode."\n";