mysql密码找回
从navicat导出密码，替换倒数第二行密码值
运行获得密码
```php
<?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');
$decode = $navicatPassword->decrypt('F1E4821F3373EE77A86034B9200032DA');
echo $decode."\n";
``` 在最后添加:skip-grant-tables，设置免密登录，然后链接数据库改密码就完事了 好帖，顶一下，收藏后留着自用:lol 之前导出native的连接后密码都没了，然后忘记密码都看不到，按这个思路楼主可以出期Xshell的教程吗 Atlantis908 发表于 2022-11-6 12:15
在最后添加:skip-grant-tables，设置免密登录，然后链接数据库改密码就完事了
又学到了一个 感觉这应该是从获取 navicat 保存的MySQL密码，重点是navicat，并不是MySQL。毕竟MySQL在允许重启的情况下，修改配置就能跳过密码，然后重置密码。 yuluo829 发表于 2022-11-6 12:30
又学到了一个
skip需要重启数据库 Atlantis908 发表于 2022-11-6 12:15
在最后添加:skip-grant-tables，设置免密登录，然后链接数据库改密码就完事了
对，这个方法最好。
好帖，顶一下，收藏后留着自用 这个支持更高版本吗比如16
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