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@@ -0,0 +1,213 @@
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+
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+import javax.crypto.Cipher;
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+import javax.crypto.spec.IvParameterSpec;
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+import javax.crypto.spec.SecretKeySpec;
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+import javax.xml.bind.DatatypeConverter;
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+import java.nio.charset.StandardCharsets;
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+import java.security.MessageDigest;
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+import java.util.Arrays;
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+
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+public class NavicateJieMi {
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+ public static void main(String []args) {
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+ //navicat11解密
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+ Navicat11Cipher de = new Navicat11Cipher();
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+ System.out.println(de.decryptString("6976000ED1E3C2"));
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+ //navicat12+解密
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+ Navicat12Cipher de12 = new Navicat12Cipher();
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+ System.out.println(de12.decryptString("6976000ED1E3C2"));
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+ }
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+ static class Navicat11Cipher {
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+ public static final String DefaultUserKey = "3DC5CA39";
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+ private static byte[] _IV;
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+
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+ private static SecretKeySpec _Key;
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+ private static Cipher _Encryptor;
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+ private static Cipher _Decryptor;
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+
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+ private static void initKey(String UserKey) {
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+ try {
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+ MessageDigest sha1 = MessageDigest.getInstance("SHA1");
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+ byte[] userkey_data = UserKey.getBytes(StandardCharsets.UTF_8);
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+ sha1.update(userkey_data, 0, userkey_data.length);
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+ _Key = new SecretKeySpec(sha1.digest(), "Blowfish");
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+ } catch (Exception e) {
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+ e.printStackTrace();
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+ }
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+ }
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+
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+ private static void initChiperEncrypt() {
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+ try {
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+ // Must use NoPadding
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+ _Encryptor = Cipher.getInstance("Blowfish/ECB/NoPadding");
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+ _Encryptor.init(Cipher.ENCRYPT_MODE, _Key);
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+ } catch (Exception e) {
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+ e.printStackTrace();
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+ }
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+ }
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+
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+ private static void initChiperDecrypt() {
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+ try {
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+ // Must use NoPadding
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+ _Decryptor = Cipher.getInstance("Blowfish/ECB/NoPadding");
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+ _Decryptor.init(Cipher.DECRYPT_MODE, _Key);
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+ } catch (Exception e) {
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+ e.printStackTrace();
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+ }
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+ }
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+
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+ private static void initIV() {
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+ try {
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+ byte[] initVec = DatatypeConverter.parseHexBinary("FFFFFFFFFFFFFFFF");
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+ _IV = _Encryptor.doFinal(initVec);
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+ } catch (Exception e) {
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+ e.printStackTrace();
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+ }
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+ }
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+
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+ private void xorBytes(byte[] a, byte[] b) {
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+ for (int i = 0; i < a.length; i++) {
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+ int aVal = a[i] & 0xff; // convert byte to integer
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+ int bVal = b[i] & 0xff;
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+ a[i] = (byte) (aVal ^ bVal); // xor aVal and bVal and typecast to byte
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+ }
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+ }
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+
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+ private void xorBytes(byte[] a, byte[] b, int l) {
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+ for (int i = 0; i < l; i++) {
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+ int aVal = a[i] & 0xff; // convert byte to integer
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+ int bVal = b[i] & 0xff;
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+ a[i] = (byte) (aVal ^ bVal); // xor aVal and bVal and typecast to byte
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+ }
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+ }
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+
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+ static {
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+ initKey(DefaultUserKey);
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+ initChiperEncrypt();
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+ initChiperDecrypt();
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+ initIV();
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+ }
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+
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+ private byte[] Encrypt(byte[] inData) {
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+ try {
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+ byte[] CV = Arrays.copyOf(_IV, _IV.length);
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+ byte[] ret = new byte[inData.length];
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+
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+ int blocks_len = inData.length / 8;
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+ int left_len = inData.length % 8;
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+
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+ for (int i = 0; i < blocks_len; i++) {
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+ byte[] temp = Arrays.copyOfRange(inData, i * 8, (i * 8) + 8);
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+
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+ xorBytes(temp, CV);
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+ temp = _Encryptor.doFinal(temp);
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+ xorBytes(CV, temp);
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+
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+ System.arraycopy(temp, 0, ret, i * 8, 8);
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+ }
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+
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+ if (left_len != 0) {
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+ CV = _Encryptor.doFinal(CV);
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+ byte[] temp = Arrays.copyOfRange(inData, blocks_len * 8, (blocks_len * 8) + left_len);
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+ xorBytes(temp, CV, left_len);
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+ System.arraycopy(temp, 0, ret, blocks_len * 8, temp.length);
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+ }
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+
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+ return ret;
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+ } catch (Exception e) {
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+ e.printStackTrace();
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+ return null;
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+ }
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+ }
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+
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+ public String encryptString(String inputString) {
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+ try {
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+ byte[] inData = inputString.getBytes(StandardCharsets.UTF_8);
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+ byte[] outData = Encrypt(inData);
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+ return DatatypeConverter.printHexBinary(outData);
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+ } catch (Exception e) {
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+ e.printStackTrace();
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+ return "";
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+ }
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+ }
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+
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+ private byte[] Decrypt(byte[] inData) {
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+ try {
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+ byte[] CV = Arrays.copyOf(_IV, _IV.length);
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+ byte[] ret = new byte[inData.length];
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+
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+ int blocks_len = inData.length / 8;
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+ int left_len = inData.length % 8;
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+
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+ for (int i = 0; i < blocks_len; i++) {
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+ byte[] temp = Arrays.copyOfRange(inData, i * 8, (i * 8) + 8);
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+
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+ temp = _Decryptor.doFinal(temp);
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+ xorBytes(temp, CV);
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+ System.arraycopy(temp, 0, ret, i * 8, 8);
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+ for (int j = 0; j < CV.length; j++) {
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+ CV[j] = (byte) (CV[j] ^ inData[i * 8 + j]);
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+ }
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+ }
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+
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+ if (left_len != 0) {
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+ CV = _Encryptor.doFinal(CV);
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+ byte[] temp = Arrays.copyOfRange(inData, blocks_len * 8, (blocks_len * 8) + left_len);
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+
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+ xorBytes(temp, CV, left_len);
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+ for (int j = 0; j < temp.length; j++) {
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+ ret[blocks_len * 8 + j] = temp[j];
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+ }
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+ }
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+
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+ return ret;
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+ } catch (Exception e) {
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+ e.printStackTrace();
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+ return null;
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+ }
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+ }
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+
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+ public String decryptString(String hexString) {
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+ try {
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+ byte[] inData = DatatypeConverter.parseHexBinary(hexString);
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+ byte[] outData = Decrypt(inData);
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+ return new String(outData, StandardCharsets.UTF_8);
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+ } catch (Exception e) {
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+ e.printStackTrace();
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+ return "";
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+ }
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+ }
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+ }
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+ static class Navicat12Cipher {
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+ private static SecretKeySpec _AesKey;
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+ private static IvParameterSpec _AesIV;
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+
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+ static {
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+ _AesKey = new SecretKeySpec("libcckeylibcckey".getBytes(StandardCharsets.UTF_8), "AES");
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+ _AesIV = new IvParameterSpec("libcciv libcciv ".getBytes(StandardCharsets.UTF_8));
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+ }
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+
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+ public String encryptString(String plaintext) {
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+ try {
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+ Cipher cipher = Cipher.getInstance("AES/CBC/PKCS5Padding");
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+ cipher.init(Cipher.ENCRYPT_MODE, _AesKey, _AesIV);
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+ byte[] ret = cipher.doFinal(plaintext.getBytes(StandardCharsets.UTF_8));
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+ return DatatypeConverter.printHexBinary(ret);
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+ } catch (Exception e) {
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+ e.printStackTrace();
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+ return "";
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+ }
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+ }
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+
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+ public String decryptString(String ciphertext) {
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+ try {
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+ Cipher cipher = Cipher.getInstance("AES/CBC/PKCS5Padding");
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+ cipher.init(Cipher.DECRYPT_MODE, _AesKey, _AesIV);
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+ byte[] ret = cipher.doFinal(DatatypeConverter.parseHexBinary(ciphertext));
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+ return new String(ret, StandardCharsets.UTF_8);
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+ } catch (Exception e) {
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+ e.printStackTrace();
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+ return "";
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+ }
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+ }
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+ }
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+}
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