目录查看Navicat加密的数据库密码1、打开运行窗口，输入regedit，点击确认按钮，打开注册表编辑器2、在注册表中找到Navicat加密后的密码3、打开PHP在线运行工具，粘贴解密代码4. 修改倒数第三行NavicatPassword的版本值5、更改倒数第二行decrypt()方法中的字符串为Navicat加密后的密码6、点击执行，右侧得到解密后的密码附录：navicat找出加密的密码Navicat导出（推荐）解密密文
查看Navicat加密的数据库密码
背景：本机装的MySQL数据库密码忘记了，打开了Navicat连接过数据库，不过密码是加密的，既然能加密那就能解密，哈哈哈哈。
解密后发现密码居然是password，好尴尬
1、打开运行窗口，输入regedit，点击确认按钮，打开注册表编辑器
2、在注册表中找到Navicat加密后的密码展开【HKEY_CURRENT_USER】展开【Software】展开【PremiumSoft】展开【NavicatPG】展开【Servers】选择 【MySQL】右侧找到 pwd，双击并复制数值数据
3、打开PHP在线运行工具，粘贴解密代码工具地址：https://tool.lu/coderunner复制解密代码到工具中<?phpclass 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, $this->aesIv); }};//需要指定版本两种，11或12//$navicatPassword = new NavicatPassword(11);$navicatPassword = new NavicatPassword(12); //解密//$decode = $navicatPassword->decrypt(\’15057D7BA390\’);$decode = $navicatPassword->decrypt(\’E75BF077AB8BAA3AC2D5\’); // 替换成上一步的数据数值echo $decode.\”\\n\”;?>
4. 修改倒数第三行NavicatPassword的版本值
5、更改倒数第二行decrypt()方法中的字符串为Navicat加密后的密码
6、点击执行，右侧得到解密后的密码
附录：navicat找出加密的密码Navicat（11.2.7、12.1.15、15.1.17、16.0.6上述版本均已通过测试）进入注册表进行查询
使用【Win】+ 【R】组合快捷键，快速打开运行命令框，在打开后面键入命令：【Regedit】打开注册表编辑器
文件路径：
计算机\\HKEY_CURRENT_USER\\SOFTWARE\\PremiumSoft\\Navicat\\Servers\\
以Navicat16为例，通过上方路径，找到注册表中存储密码值的位置（如下图），选中要查看密码的连接名称，双击Pwd项，复制对应的值，至此获得了密文
Navicat导出（推荐）
以Navicat16为例，菜单栏上点击文件，选择导出连接…，一定要选中导出密码！！！导出格式为*.ncx（该ncx本质上是xml文件，文件中包含连接的全部信息）
注：Navicat11版本没有勾选导出密码选项，直接导出即可；Navicat12+版本要勾选【导出密码】选项！
解密密文
Go
https://www.nhooo.com/tool/java8/
运行代码
Go
import javax.crypto.Cipher;import javax.crypto.spec.IvParameterSpec;import javax.crypto.spec.SecretKeySpec;import javax.xml.bind.DatatypeConverter;import java.nio.charset.StandardCharsets;import java.security.MessageDigest;import java.util.Arrays;public class Main { public static void main(String []args) {//navicat11解密 Navicat11Cipher de = new Navicat11Cipher(); System.out.println(de.decryptString(\”密文放此处\”));//navicat12+解密 Navicat12Cipher de12 = new Navicat12Cipher(); System.out.println(de12.decryptString(\”密文放此处\”)); } static class Navicat11Cipher { public static final String DefaultUserKey = \”3DC5CA39\”; private static byte[] _IV; private static SecretKeySpec _Key; private static Cipher _Encryptor; private static Cipher _Decryptor; private static void initKey(String UserKey) { try { MessageDigest sha1 = MessageDigest.getInstance(\”SHA1\”);byte[] userkey_data = UserKey.getBytes(StandardCharsets.UTF_8); sha1.update(userkey_data, 0, userkey_data.length); _Key = new SecretKeySpec(sha1.digest(), \”Blowfish\”); } catch (Exception e) { e.printStackTrace(); } } private static void initChiperEncrypt() { try {// Must use NoPadding _Encryptor = Cipher.getInstance(\”Blowfish/ECB/NoPadding\”); _Encryptor.init(Cipher.ENCRYPT_MODE, _Key); } catch (Exception e) { e.printStackTrace(); } } private static void initChiperDecrypt() { try {// Must use NoPadding _Decryptor = Cipher.getInstance(\”Blowfish/ECB/NoPadding\”); _Decryptor.init(Cipher.DECRYPT_MODE, _Key); } catch (Exception e) { e.printStackTrace(); } } private static void initIV() { try {byte[] initVec = DatatypeConverter.parseHexBinary(\”FFFFFFFFFFFFFFFF\”); _IV = _Encryptor.doFinal(initVec); } catch (Exception e) { e.printStackTrace(); } } private void xorBytes(byte[] a, byte[] b) {for (int i = 0; i < a.length; i++) {int aVal = a[i] & 0xff; // convert byte to integerint bVal = b[i] & 0xff; a[i] = (byte) (aVal ^ bVal); // xor aVal and bVal and typecast to byte } } private void xorBytes(byte[] a, byte[] b, int l) {for (int i = 0; i < l; i++) {int aVal = a[i] & 0xff; // convert byte to integerint bVal = b[i] & 0xff; a[i] = (byte) (aVal ^ bVal); // xor aVal and bVal and typecast to byte } } static { initKey(DefaultUserKey); initChiperEncrypt(); initChiperDecrypt(); initIV(); } private byte[] Encrypt(byte[] inData) { try {byte[] CV = Arrays.copyOf(_IV, _IV.length);byte[] ret = newbyte[inData.length];int blocks_len = inData.length / 8;int left_len = inData.length % 8;for (int i = 0; i < blocks_len; i++) {byte[] temp = Arrays.copyOfRange(inData, i * 8, (i * 8) + 8); xorBytes(temp, CV); temp = _Encryptor.doFinal(temp); xorBytes(CV, temp); System.arraycopy(temp, 0, ret, i * 8, 8); }if (left_len != 0) { CV = _Encryptor.doFinal(CV);byte[] temp = Arrays.copyOfRange(inData, blocks_len * 8, (blocks_len * 8) + left_len); xorBytes(temp, CV, left_len); System.arraycopy(temp, 0, ret, blocks_len * 8, temp.length); }return ret; } catch (Exception e) { e.printStackTrace();return null; } } public String encryptString(String inputString) { try {byte[] inData = inputString.getBytes(StandardCharsets.UTF_8);byte[] outData = Encrypt(inData);return DatatypeConverter.printHexBinary(outData); } catch (Exception e) { e.printStackTrace();return\”\”; } } private byte[] Decrypt(byte[] inData) { try {byte[] CV = Arrays.copyOf(_IV, _IV.length);byte[] ret = newbyte[inData.length];int blocks_len = inData.length / 8;int left_len = inData.length % 8;for (int i = 0; i < blocks_len; i++) {byte[] temp = Arrays.copyOfRange(inData, i * 8, (i * 8) + 8); temp = _Decryptor.doFinal(temp); xorBytes(temp, CV); System.arraycopy(temp, 0, ret, i * 8, 8);for (int j = 0; j < CV.length; j++) { CV[j] = (byte) (CV[j] ^ inData[i * 8 + j]); } }if (left_len != 0) { CV = _Encryptor.doFinal(CV);byte[] temp = Arrays.copyOfRange(inData, blocks_len * 8, (blocks_len * 8) + left_len); xorBytes(temp, CV, left_len);for (int j = 0; j < temp.length; j++) { ret[blocks_len * 8 + j] = temp[j]; } }return ret; } catch (Exception e) { e.printStackTrace();return null; } } public String decryptString(String hexString) { try {byte[] inData = DatatypeConverter.parseHexBinary(hexString);byte[] outData = Decrypt(inData);returnnew String(outData, StandardCharsets.UTF_8); } catch (Exception e) { e.printStackTrace();return\”\”; } } } static class Navicat12Cipher { private static SecretKeySpec _AesKey; private static IvParameterSpec _AesIV; static { _AesKey = new SecretKeySpec(\”libcckeylibcckey\”.getBytes(StandardCharsets.UTF_8), \”AES\”); _AesIV = new IvParameterSpec(\”libcciv libcciv \”.getBytes(StandardCharsets.UTF_8)); } public String encryptString(String plaintext) { try { Cipher cipher = Cipher.getInstance(\”AES/CBC/PKCS5Padding\”); cipher.init(Cipher.ENCRYPT_MODE, _AesKey, _AesIV);byte[] ret = cipher.doFinal(plaintext.getBytes(StandardCharsets.UTF_8));return DatatypeConverter.printHexBinary(ret); } catch (Exception e) { e.printStackTrace();return\”\”; } } public String decryptString(String ciphertext) { try { Cipher cipher = Cipher.getInstance(\”AES/CBC/PKCS5Padding\”); cipher.init(Cipher.DECRYPT_MODE, _AesKey, _AesIV);byte[] ret = cipher.doFinal(DatatypeConverter.parseHexBinary(ciphertext));returnnew String(ret, StandardCharsets.UTF_8); } catch (Exception e) { e.printStackTrace();return\”\”; } } }}
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