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如何查看Navicat已保存的数据库连接密码详解

2025年10月19日 Mysql 我要评论
前提条件:数据库密码忘记了,但是在navicat连接过且目前能连接上的状态!1.导出数据库连接connections.ncx 文件选择你要导出密码的数据库连接,切记要勾上导出密码2.使用文本编辑工具打

前提条件:数据库密码忘记了,但是在navicat连接过且目前能连接上的状态!

1.导出数据库连接 connections.ncx 文件

选择你要导出密码的数据库连接,切记要勾上导出密码

2.使用文本编辑工具打开导出的connections.ncx 文件

找到password="",将双引号中间的密码复制出来使用下面的java程序或php程序进行解密!

3.解密 - 使用java程序进行解密

java在线运行环境:代码在线运行 - 在线工具,进入选择java,将以下代码复制到在线运行环境中

选择你自己的navicat版本,把代码中的密码替换为你自己connections.ncx文件中的密码,然后执行即可输出(实测navicat16可以成功解密)

import javax.crypto.cipher;
import javax.crypto.spec.ivparameterspec;
import javax.crypto.spec.secretkeyspec;
import java.nio.charset.standardcharsets;
import java.security.messagedigest;
import java.util.arrays;

public class navicatpassword {
	public static void main(string[] args) throws exception {
		navicatpassword navicatpassword = new navicatpassword();

		// navicat 11及以前的版本
        // string decode = navicatpassword.decrypt("你的密码", 11);

		// navicat 12及以后的版本
		string decode = navicatpassword.decrypt("你的密码", 12);

		system.out.println(decode);
	}

	private static final string aes_key = "libcckeylibcckey";
	private static final string aes_iv = "libcciv libcciv ";
	private static final string blow_key = "3dc5ca39";
	private static final string blow_iv = "d9c7c3c8870d64bd";

	public static string encrypt(string plaintext, int version) throws exception {
		switch (version) {
			case 11:
				return encrypteleven(plaintext);
			case 12:
				return encrypttwelve(plaintext);
			default:
				throw new illegalargumentexception("unsupported version");
		}
	}

	public static string decrypt(string ciphertext, int version) throws exception {
		switch (version) {
			case 11:
				return decrypteleven(ciphertext);
			case 12:
				return decrypttwelve(ciphertext);
			default:
				throw new illegalargumentexception("unsupported version");
		}
	}

	private static string encrypteleven(string plaintext) throws exception {
		byte[] iv = hexstringtobytearray(blow_iv);
		byte[] key = hashtobytes(blow_key);

		int round = plaintext.length() / 8;
		int leftlength = plaintext.length() % 8;
		stringbuilder result = new stringbuilder();
		byte[] currentvector = iv.clone();

		cipher cipher = cipher.getinstance("blowfish/ecb/nopadding");
		secretkeyspec secretkeyspec = new secretkeyspec(key, "blowfish");
		cipher.init(cipher.encrypt_mode, secretkeyspec);

		for (int i = 0; i < round; i++) {
			byte[] block = xorbytes(plaintext.substring(i * 8, (i + 1) * 8).getbytes(), currentvector);
			byte[] temp = cipher.dofinal(block);
			currentvector = xorbytes(currentvector, temp);
			result.append(bytestohex(temp));
		}

		if (leftlength > 0) {
			currentvector = cipher.dofinal(currentvector);
			byte[] block = xorbytes(plaintext.substring(round * 8).getbytes(), currentvector);
			result.append(bytestohex(block));
		}

		return result.tostring().touppercase();
	}

	private static string encrypttwelve(string plaintext) throws exception {
		byte[] iv = aes_iv.getbytes();
		byte[] key = aes_key.getbytes();

		cipher cipher = cipher.getinstance("aes/cbc/nopadding");
		secretkeyspec secretkeyspec = new secretkeyspec(key, "aes");
		ivparameterspec ivparameterspec = new ivparameterspec(iv);
		cipher.init(cipher.encrypt_mode, secretkeyspec, ivparameterspec);

		byte[] result = cipher.dofinal(plaintext.getbytes());
		return bytestohex(result).touppercase();
	}

	private static string decrypteleven(string ciphertext) throws exception {
		byte[] iv = hexstringtobytearray(blow_iv);
		byte[] key = hashtobytes(blow_key);
		byte[] encrypted = hexstringtobytearray(ciphertext.tolowercase());

		int round = encrypted.length / 8;
		int leftlength = encrypted.length % 8;
		stringbuilder result = new stringbuilder();
		byte[] currentvector = iv.clone();

		cipher cipher = cipher.getinstance("blowfish/ecb/nopadding");
		secretkeyspec secretkeyspec = new secretkeyspec(key, "blowfish");
		cipher.init(cipher.decrypt_mode, secretkeyspec);

		for (int i = 0; i < round; i++) {
			byte[] block = arrays.copyofrange(encrypted, i * 8, (i + 1) * 8);
			byte[] temp = xorbytes(cipher.dofinal(block), currentvector);
			currentvector = xorbytes(currentvector, block);
			result.append(new string(temp));
		}

		if (leftlength > 0) {
			currentvector = cipher.dofinal(currentvector);
			byte[] block = arrays.copyofrange(encrypted, round * 8, round * 8 + leftlength);

			result.append(new string(xorbytes(block, currentvector), standardcharsets.utf_8));
		}

		return result.tostring();
	}

	private static string decrypttwelve(string ciphertext) throws exception {
		byte[] iv = aes_iv.getbytes();
		byte[] key = aes_key.getbytes();
		byte[] encrypted = hexstringtobytearray(ciphertext.tolowercase());

		cipher cipher = cipher.getinstance("aes/cbc/nopadding");
		secretkeyspec secretkeyspec = new secretkeyspec(key, "aes");
		ivparameterspec ivparameterspec = new ivparameterspec(iv);
		cipher.init(cipher.decrypt_mode, secretkeyspec, ivparameterspec);

		byte[] result = cipher.dofinal(encrypted);
		return new string(result);
	}

	private static byte[] xorbytes(byte[] bytes1, byte[] bytes2) {
		byte[] result = new byte[bytes1.length];
		for (int i = 0; i < bytes1.length; i++) {
			result[i] = (byte) (bytes1[i] ^ bytes2[i]);
		}
		return result;
	}

	private static byte[] hexstringtobytearray(string s) {
		int len = s.length();
		byte[] data = new byte[len / 2];
		for (int i = 0; i < len; i += 2) {
			data[i / 2] = (byte) ((character.digit(s.charat(i), 16) << 4) + character.digit(s.charat(i + 1), 16));
		}
		return data;
	}

	private static byte[] hashtobytes(string s) throws exception {
		return messagedigest.getinstance("sha-1").digest(s.getbytes());
	}

	private static string bytestohex(byte[] bytes) {
		stringbuilder result = new stringbuilder();
		for (byte b : bytes) {
			result.append(string.format("%02x", b));
		}
		return result.tostring();
	}
}

3.解密 - 使用php程序进行解密

php在线运行环境:代码在线运行 - 在线工具,进入后选择php,将以下代码复制到在线运行环境中

选择你自己的navicat版本,把代码中的密码替换为你自己connections.ncx文件中的密码,然后执行即可输出(实测navicat16可以成功解密)

<?php

// navicat 11及以前的版本
//$navicatpassword = new navicatpassword(11);

// navicat 12及以后的版本
$navicatpassword = new navicatpassword(12);

$decode = $navicatpassword->decrypt('68ab8fc887be22acd71f6e139da7c141');
echo $decode . "\n";

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);
    }
}

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