// Path: src/main/java/cc/agentx/util/KeyHelper.java
// public class KeyHelper {
//     private static SecureRandom randomizer = new SecureRandom();
// 
//     private KeyHelper() {
//     }
// 
//     public static int generateRandomInteger(int min, int max) {
//         return min + randomizer.nextInt(max - min);
//     }
// 
//     public static byte[] generateRandomBytes(int length) {
//         byte[] bytes = new byte[length];
//         randomizer.nextBytes(bytes);
//         return bytes;
//     }
// 
//     public static byte[] generateKeyDigest(int keyLength, String password) {
//         try {
//             MessageDigest digester = MessageDigest.getInstance("MD5");
//             int length = (keyLength + 15) / 16 * 16;
//             byte[] passwordBytes = password.getBytes("UTF-8");
//             byte[] temp = digester.digest(passwordBytes);
//             byte[] key = Arrays.copyOf(temp, length);
//             for (int i = 1; i < length / 16; i++) {
//                 temp = Arrays.copyOf(temp, 16 + passwordBytes.length);
//                 System.arraycopy(passwordBytes, 0, temp, 16, passwordBytes.length);
//                 System.arraycopy(digester.digest(temp), 0, key, i * 16, 16);
//             }
//             return Arrays.copyOf(key, keyLength);
//         } catch (NoSuchAlgorithmException | UnsupportedEncodingException e) {
//             e.printStackTrace();
//         }
//         return new byte[keyLength];
//     }
// 
//     public static byte[] getCompressedBytes(int value) {
//         byte[] bytes = new byte[4];
//         bytes[0] = (byte) ((value >> 24) & 0xff);
//         bytes[1] = (byte) ((value >> 16) & 0xff);
//         bytes[2] = (byte) ((value >> 8) & 0xff);
//         bytes[3] = (byte) (value & 0xff);
//         if (bytes[0] == 0 && bytes[1] == 0 && bytes[2] == 0)
//             return Arrays.copyOfRange(bytes, 3, 4);
//         if (bytes[0] == 0 && bytes[1] == 0)
//             return Arrays.copyOfRange(bytes, 2, 4);
//         if (bytes[0] == 0)
//             return Arrays.copyOfRange(bytes, 1, 4);
//         return bytes;
//     }
// 
//     public static byte[] getBytes(int length, int value) {
//         if (length < 1 || length > 4)
//             throw new RuntimeException("bad length");
//         byte[] bytes = new byte[4];
//         bytes[0] = (byte) ((value >> 24) & 0xff);
//         bytes[1] = (byte) ((value >> 16) & 0xff);
//         bytes[2] = (byte) ((value >> 8) & 0xff);
//         bytes[3] = (byte) (value & 0xff);
//         if (length == 4)
//             return bytes;
//         else
//             return Arrays.copyOfRange(bytes, 4 - length, 4);
//     }
// 
//     public static byte[] getBytes(int value) {
//         return getBytes(4, value);
//     }
// 
//     public static int toBigEndianInteger(byte[] bytes) {
//         byte[] value = new byte[4];
//         System.arraycopy(bytes, 0, value, 4 - bytes.length, bytes.length);
//         return (value[0] & 0xff) << 24 | (value[1] & 0xff) << 16
//                 | (value[2] & 0xff) << 8 | (value[3] & 0xff);
//     }
// 
//     public int getRandomIdentifier(int length) {
//         int base = (int) Math.pow(10, length - 1);
//         return randomizer.nextInt(base * 9) + base;
//     }
// }


import cc.agentx.util.KeyHelper;
import java.util.Arrays;
/*
 * Copyright 2017 ZhangJiupeng
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package cc.agentx.wrapper;



public class ZeroPaddingWrapper extends PaddingWrapper {

    // +-----------------------+--------------------+------+
    // | header (padding size) | padding (nullable) | data |
    // +-----------------------+--------------------+------+
    public ZeroPaddingWrapper(int paddingThreshold, int paddingRange) {
        super(paddingThreshold, paddingRange);
// Path: src/main/java/cc/agentx/util/KeyHelper.java
// public class KeyHelper {
//     private static SecureRandom randomizer = new SecureRandom();
// 
//     private KeyHelper() {
//     }
// 
//     public static int generateRandomInteger(int min, int max) {
//         return min + randomizer.nextInt(max - min);
//     }
// 
//     public static byte[] generateRandomBytes(int length) {
//         byte[] bytes = new byte[length];
//         randomizer.nextBytes(bytes);
//         return bytes;
//     }
// 
//     public static byte[] generateKeyDigest(int keyLength, String password) {
//         try {
//             MessageDigest digester = MessageDigest.getInstance("MD5");
//             int length = (keyLength + 15) / 16 * 16;
//             byte[] passwordBytes = password.getBytes("UTF-8");
//             byte[] temp = digester.digest(passwordBytes);
//             byte[] key = Arrays.copyOf(temp, length);
//             for (int i = 1; i < length / 16; i++) {
//                 temp = Arrays.copyOf(temp, 16 + passwordBytes.length);
//                 System.arraycopy(passwordBytes, 0, temp, 16, passwordBytes.length);
//                 System.arraycopy(digester.digest(temp), 0, key, i * 16, 16);
//             }
//             return Arrays.copyOf(key, keyLength);
//         } catch (NoSuchAlgorithmException | UnsupportedEncodingException e) {
//             e.printStackTrace();
//         }
//         return new byte[keyLength];
//     }
// 
//     public static byte[] getCompressedBytes(int value) {
//         byte[] bytes = new byte[4];
//         bytes[0] = (byte) ((value >> 24) & 0xff);
//         bytes[1] = (byte) ((value >> 16) & 0xff);
//         bytes[2] = (byte) ((value >> 8) & 0xff);
//         bytes[3] = (byte) (value & 0xff);
//         if (bytes[0] == 0 && bytes[1] == 0 && bytes[2] == 0)
//             return Arrays.copyOfRange(bytes, 3, 4);
//         if (bytes[0] == 0 && bytes[1] == 0)
//             return Arrays.copyOfRange(bytes, 2, 4);
//         if (bytes[0] == 0)
//             return Arrays.copyOfRange(bytes, 1, 4);
//         return bytes;
//     }
// 
//     public static byte[] getBytes(int length, int value) {
//         if (length < 1 || length > 4)
//             throw new RuntimeException("bad length");
//         byte[] bytes = new byte[4];
//         bytes[0] = (byte) ((value >> 24) & 0xff);
//         bytes[1] = (byte) ((value >> 16) & 0xff);
//         bytes[2] = (byte) ((value >> 8) & 0xff);
//         bytes[3] = (byte) (value & 0xff);
//         if (length == 4)
//             return bytes;
//         else
//             return Arrays.copyOfRange(bytes, 4 - length, 4);
//     }
// 
//     public static byte[] getBytes(int value) {
//         return getBytes(4, value);
//     }
// 
//     public static int toBigEndianInteger(byte[] bytes) {
//         byte[] value = new byte[4];
//         System.arraycopy(bytes, 0, value, 4 - bytes.length, bytes.length);
//         return (value[0] & 0xff) << 24 | (value[1] & 0xff) << 16
//                 | (value[2] & 0xff) << 8 | (value[3] & 0xff);
//     }
// 
//     public int getRandomIdentifier(int length) {
//         int base = (int) Math.pow(10, length - 1);
//         return randomizer.nextInt(base * 9) + base;
//     }
// }


// Path: src/main/java/cc/agentx/wrapper/ZeroPaddingWrapper.java
import cc.agentx.util.KeyHelper;
import java.util.Arrays;

/*
 * Copyright 2017 ZhangJiupeng
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package cc.agentx.wrapper;



public class ZeroPaddingWrapper extends PaddingWrapper {

    // +-----------------------+--------------------+------+
    // | header (padding size) | padding (nullable) | data |
    // +-----------------------+--------------------+------+
    public ZeroPaddingWrapper(int paddingThreshold, int paddingRange) {
        super(paddingThreshold, paddingRange);
        if (paddingThreshold + paddingRange < 0xFF - 1)