在使用专业数据库软件navicat 是都是习惯性地保存了默认密码，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 导出连接导出连接获取到 connections.ncx 文件
这里记着 导出密码！！！ 不然导出的文件里不包含加密的密码
把它复制出来
多亏一位Github:https://github.com/tianhe1986/FatSmallTools上的大佬写了个程序；可以直接破解这个加密密码
程序是php语言的；如果本地没装php也没关系（也可以弄个服务器测试） , 直接找个在线运行的工具 https://tool.lu/coderunner/
把代码粘上去就行了
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
$decode = $navicatPassword->decrypt('999239DEBFA1960BCCB12566F1F417A6');
附带代码行
<?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('999239DEBFA1960BCCB12566F1F417A6');
echo $decode."\n";
最后注意下：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
可能11版本是乱码。
给他修改成12版本就正常了，具体测试看那个正常。
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