Export link
Take navicat15 as an example, click File on the menu bar, select Export Connection…, Be sure to select Export Password! ! ! The export format is *.ncx (the ncx is essentially an xml file, which contains all the information of the connection)
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Open the exported file with a text editor and find the encrypted password
Run code
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 decryption
Navicat11Cipher de = new Navicat11Cipher();
System.out.println(de.decryptString("15057D7BA390"));
//navicat12 decryption
Navicat12Cipher de12 = new Navicat12Cipher();
System.out.println(de12.decryptString("503AA930968F877F04770B47DD731DC0"));
}
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] & amp; 0xff; // convert byte to integer
int 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] & amp; 0xff; // convert byte to integer
int 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 = new byte[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 = new byte[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);
return new 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));
return new String(ret, StandardCharsets. UTF_8);
} catch (Exception e) {<!-- -->
e.printStackTrace();
return "";
}
}
}
}