[
  {
    "path": ".gitignore",
    "content": "/target/\n/example/target/"
  },
  {
    "path": "LICENSE.md",
    "content": "The MIT License (MIT)\n\nCopyright (c) 2008-2016 Ma Bingyao <mabingyao@gmail.com>\n\nPermission is hereby granted, free of charge, to any person obtaining a copy of\nthis software and associated documentation files (the \"Software\"), to deal in\nthe Software without restriction, including without limitation the rights to\nuse, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of\nthe Software, and to permit persons to whom the Software is furnished to do so,\nsubject to the following conditions:\n\nThe above copyright notice and this permission notice shall be included in all\ncopies or substantial portions of the Software.\n\nTHE SOFTWARE IS PROVIDED \"AS IS\", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR\nIMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS\nFOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR\nCOPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER\nIN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN\nCONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.\n"
  },
  {
    "path": "README.md",
    "content": "# XXTEA for Java\n\n<a href=\"https://github.com/xxtea/\">\n    <img src=\"https://avatars1.githubusercontent.com/u/6683159?v=3&s=86\" alt=\"XXTEA logo\" title=\"XXTEA\" align=\"right\" />\n</a>\n\n[![Join the chat at https://gitter.im/xxtea/xxtea-java](https://img.shields.io/badge/GITTER-join%20chat-green.svg)](https://gitter.im/xxtea/xxtea-java?utm_source=badge&utm_medium=badge&utm_campaign=pr-badge&utm_content=badge)\n[![Maven Central](https://maven-badges.herokuapp.com/maven-central/org.xxtea/xxtea-java/badge.svg)](https://maven-badges.herokuapp.com/maven-central/org.xxtea/xxtea-java/)\n[![GitHub release](https://img.shields.io/github/release/xxtea/xxtea-java.svg)](https://github.com/xxtea/xxtea-java/releases)\n[![License](https://img.shields.io/github/license/xxtea/xxtea-java.svg)](http://opensource.org/licenses/MIT)\n\n## Introduction\n\nXXTEA is a fast and secure encryption algorithm. This is a XXTEA library for Java.\n\nIt is different from the original XXTEA encryption algorithm. It encrypts and decrypts byte[] instead of 32bit integer array, and the key is also the byte[].\n\nIn addition to providing the API of byte[] encryption and decryption, it also provides some methods to handle string and Base64 encode.\n\n## Usage\n\n```java\npackage org.xxtea.test;\n\nimport org.xxtea.XXTEA;\n\npublic class Main {\n    public static void main(String[] args) {\n        String str = \"Hello World! 你好，中国！\";\n        String key = \"1234567890\";\n        byte[] encrypt_data = XXTEA.encrypt(str, key);\n        String decrypt_data = XXTEA.decryptToString(encrypt_data, key);\n        assert(str.equals(decrypt_data));\n    }\n}\n```\n"
  },
  {
    "path": "README_zh_CN.md",
    "content": "# XXTEA 加密算法的 Java 实现\n\n<a href=\"https://github.com/xxtea/\">\n    <img src=\"https://avatars1.githubusercontent.com/u/6683159?v=3&s=86\" alt=\"XXTEA logo\" title=\"XXTEA\" align=\"right\" />\n</a>\n\n[![Join the chat at https://gitter.im/xxtea/xxtea-java](https://img.shields.io/badge/GITTER-join%20chat-green.svg)](https://gitter.im/xxtea/xxtea-java?utm_source=badge&utm_medium=badge&utm_campaign=pr-badge&utm_content=badge)\n[![Maven Central](https://maven-badges.herokuapp.com/maven-central/org.xxtea/xxtea-java/badge.svg)](https://maven-badges.herokuapp.com/maven-central/org.xxtea/xxtea-java/)\n[![GitHub release](https://img.shields.io/github/release/xxtea/xxtea-java.svg)](https://github.com/xxtea/xxtea-java/releases)\n[![License](https://img.shields.io/github/license/xxtea/xxtea-java.svg)](http://opensource.org/licenses/MIT)\n\n## 简介\n\nXXTEA 是一个快速安全的加密算法。本项目是 XXTEA 加密算法的 Java 实现。\n\n它不同于原始的 XXTEA 加密算法。它是针对 byte[] 类型数据进行加密的，而不是针对 32 位整型数组。同样，密钥也是 byte[]。\n\n为了用户使用方便，除了提供对 byte[] 进行加解密的 API 之外，还提供了一些辅助方法来处理字符串和 Base64 编码。\n\n## 使用\n\n```java\npackage org.xxtea.test;\n\nimport org.xxtea.XXTEA;\n\npublic class Main {\n    public static void main(String[] args) {\n        String str = \"Hello World! 你好，中国！\";\n        String key = \"1234567890\";\n        byte[] encrypt_data = XXTEA.encrypt(str, key);\n        String decrypt_data = XXTEA.decryptToString(encrypt_data, key);\n        assert(str.equals(decrypt_data));\n    }\n}\n```\n"
  },
  {
    "path": "example/pom.xml",
    "content": "<?xml version=\"1.0\" encoding=\"UTF-8\"?>\n<project xmlns=\"http://maven.apache.org/POM/4.0.0\" xmlns:xsi=\"http://www.w3.org/2001/XMLSchema-instance\" xsi:schemaLocation=\"http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd\">\n    <modelVersion>4.0.0</modelVersion>\n    <groupId>org.xxtea</groupId>\n    <artifactId>example</artifactId>\n    <version>1.0-SNAPSHOT</version>\n    <packaging>jar</packaging>\n    <dependencies>\n        <dependency>\n            <groupId>${project.groupId}</groupId>\n            <artifactId>xxtea-java</artifactId>\n            <version>1.0.5</version>\n        </dependency>\n    </dependencies>\n    <properties>\n        <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>\n        <maven.compiler.source>1.7</maven.compiler.source>\n        <maven.compiler.target>1.7</maven.compiler.target>\n    </properties>\n</project>"
  },
  {
    "path": "example/src/main/java/org/xxtea/example/Main.java",
    "content": "package org.xxtea.example;\n\nimport org.xxtea.XXTEA;\n\npublic class Main {\n    public static void main(String[] args) {\n        String str = \"Hello World! 你好，中国！\";\n        String key = \"1234567890\";\n        String encrypt_data = XXTEA.encryptToBase64String(str, key);\n        System.out.println(encrypt_data);\n        assert(\"QncB1C0rHQoZ1eRiPM4dsZtRi9pNrp7sqvX76cFXvrrIHXL6\".equals(encrypt_data));\n        String decrypt_data = XXTEA.decryptBase64StringToString(encrypt_data, key);\n        assert(str.equals(decrypt_data));\n    }\n}\n"
  },
  {
    "path": "pom.xml",
    "content": "<project xmlns=\"http://maven.apache.org/POM/4.0.0\" xmlns:xsi=\"http://www.w3.org/2001/XMLSchema-instance\"\n         xsi:schemaLocation=\"http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd\">\n    <modelVersion>4.0.0</modelVersion>\n    <groupId>org.xxtea</groupId>\n    <artifactId>xxtea-java</artifactId>\n    <version>1.0.5</version>\n    <name>XXTEA for Java</name>\n    <description>XXTEA is a fast and secure encryption algorithm. This is a XXTEA library for Java.\n\nIt is different from the original XXTEA encryption algorithm. It encrypts and decrypts byte[] instead of 32bit integer array, and the key is also the byte[].</description>\n    <parent>\n        <groupId>org.sonatype.oss</groupId>\n        <artifactId>oss-parent</artifactId>\n        <version>9</version>\n    </parent>\n\n    <licenses>\n        <license>\n            <name>MIT License</name>\n            <url>https://raw.github.com/xxtea/xxtea-java/master/LICENSE.md</url>\n        </license>\n    </licenses>\n    <scm>\n        <connection>scm:git:https://github.com/xxtea/xxtea-java.git</connection>\n        <developerConnection>scm:git:https://github.com/xxtea/xxtea-java.git</developerConnection>\n        <url>https://github.com/xxtea/xxtea-java</url>\n        <tag>v1.0.5</tag>\n    </scm>\n    <developers>\n        <developer>\n            <id>andot</id>\n            <name>Ma Bingyao</name>\n            <email>mabingyao@gmail.com</email>\n        </developer>\n    </developers>\n\n    <issueManagement>\n        <system>GitHub Issues</system>\n        <url>https://github.com/xxtea/xxtea-java/issues</url>\n    </issueManagement>\n\n    <properties>\n        <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>\n        <project.reporting.outputEncoding>UTF-8</project.reporting.outputEncoding>\n    </properties>\n\n    <dependencies>\n    </dependencies>\n\n    <build>\n        <plugins>\n            <plugin>\n                <groupId>org.apache.maven.plugins</groupId>\n                <artifactId>maven-compiler-plugin</artifactId>\n                <version>3.0</version>\n            </plugin>\n            <plugin>\n                <groupId>org.apache.maven.plugins</groupId>\n                <artifactId>maven-release-plugin</artifactId>\n                <version>2.4</version>\n                <configuration>\n                    <tagNameFormat>v@{project.version}</tagNameFormat>\n                </configuration>\n            </plugin>\n            <plugin>\n                <groupId>org.apache.maven.plugins</groupId>\n                <artifactId>maven-source-plugin</artifactId>\n                <version>2.2.1</version>\n                <executions>\n                    <execution>\n                        <id>attach-sources</id>\n                        <goals>\n                            <goal>jar</goal>\n                        </goals>\n                    </execution>\n                </executions>\n            </plugin>\n            <plugin>\n                <groupId>org.apache.maven.plugins</groupId>\n                <artifactId>maven-gpg-plugin</artifactId>\n                <version>1.5</version>\n                <executions>\n                    <execution>\n                        <id>sign-artifacts</id>\n                        <phase>verify</phase>\n                        <goals>\n                            <goal>sign</goal>\n                        </goals>\n                    </execution>\n                </executions>\n            </plugin>\n            <plugin>\n                <groupId>org.apache.maven.plugins</groupId>\n                <artifactId>maven-javadoc-plugin</artifactId>\n                <version>2.9</version>\n                <executions>\n                    <execution>\n                        <id>attach-javadocs</id>\n                        <goals>\n                            <goal>jar</goal>\n                        </goals>\n                    </execution>\n                </executions>\n            </plugin>\n        </plugins>\n    </build>\n</project>\n"
  },
  {
    "path": "src/main/java/org/xxtea/Base64.java",
    "content": "/**********************************************************\\\r\n|                                                          |\r\n| Base64.java                                              |\r\n|                                                          |\r\n| Base64 library for Java.                                 |\r\n|                                                          |\r\n| Code Authors: Ma Bingyao <mabingyao@gmail.com>           |\r\n| LastModified: Mar 10, 2015                               |\r\n|                                                          |\r\n\\**********************************************************/\r\n\r\npackage org.xxtea;\r\n\r\nimport java.io.ByteArrayOutputStream;\r\n\r\nfinal class Base64 {\r\n    private static final char[] base64EncodeChars = new char[] {\r\n        'A', 'B', 'C', 'D', 'E', 'F', 'G', 'H',\r\n        'I', 'J', 'K', 'L', 'M', 'N', 'O', 'P',\r\n        'Q', 'R', 'S', 'T', 'U', 'V', 'W', 'X',\r\n        'Y', 'Z', 'a', 'b', 'c', 'd', 'e', 'f',\r\n        'g', 'h', 'i', 'j', 'k', 'l', 'm', 'n',\r\n        'o', 'p', 'q', 'r', 's', 't', 'u', 'v',\r\n        'w', 'x', 'y', 'z', '0', '1', '2', '3',\r\n        '4', '5', '6', '7', '8', '9', '+', '/' };\r\n\r\n    private static final byte[] base64DecodeChars = new byte[] {\r\n    -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,\r\n    -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,\r\n    -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, 62, -1, -1, -1, 63,\r\n    52, 53, 54, 55, 56, 57, 58, 59, 60, 61, -1, -1, -1, -1, -1, -1,\r\n    -1,  0,  1,  2,  3,  4,  5,  6,  7,  8,  9, 10, 11, 12, 13, 14,\r\n    15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, -1, -1, -1, -1, -1,\r\n    -1, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40,\r\n    41, 42, 43, 44, 45, 46, 47, 48, 49, 50, 51, -1, -1, -1, -1, -1 };\r\n\r\n    private Base64() {}\r\n\r\n    public static final String encode(byte[] data) {\r\n        StringBuilder sb = new StringBuilder();\r\n        int r = data.length % 3;\r\n        int len = data.length - r;\r\n        int i = 0;\r\n        int c;\r\n        while (i < len) {\r\n            c = (0x000000ff & data[i++]) << 16 |\r\n                (0x000000ff & data[i++]) << 8  |\r\n                (0x000000ff & data[i++]);\r\n            sb.append(base64EncodeChars[c >> 18]);\r\n            sb.append(base64EncodeChars[c >> 12 & 0x3f]);\r\n            sb.append(base64EncodeChars[c >> 6  & 0x3f]);\r\n            sb.append(base64EncodeChars[c & 0x3f]);\r\n        }\r\n        if (r == 1) {\r\n            c = 0x000000ff & data[i++];\r\n            sb.append(base64EncodeChars[c >> 2]);\r\n            sb.append(base64EncodeChars[(c & 0x03) << 4]);\r\n            sb.append(\"==\");\r\n        }\r\n        else if (r == 2) {\r\n            c = (0x000000ff & data[i++]) << 8 |\r\n                (0x000000ff & data[i++]);\r\n            sb.append(base64EncodeChars[c >> 10]);\r\n            sb.append(base64EncodeChars[c >> 4 & 0x3f]);\r\n            sb.append(base64EncodeChars[(c & 0x0f) << 2]);\r\n            sb.append(\"=\");\r\n        }\r\n        return sb.toString();\r\n    }\r\n\r\n    public static final byte[] decode(String str) {\r\n        byte[] data = str.getBytes();\r\n        int len = data.length;\r\n        ByteArrayOutputStream buf = new ByteArrayOutputStream(len);\r\n        int i = 0;\r\n        int b1, b2, b3, b4;\r\n\r\n        while (i < len) {\r\n\r\n            /* b1 */\r\n            do {\r\n                b1 = base64DecodeChars[data[i++]];\r\n            } while (i < len && b1 == -1);\r\n            if (b1 == -1) {\r\n                break;\r\n            }\r\n\r\n            /* b2 */\r\n            do {\r\n                b2 = base64DecodeChars[data[i++]];\r\n            } while (i < len && b2 == -1);\r\n            if (b2 == -1) {\r\n                break;\r\n            }\r\n            buf.write((int) ((b1 << 2) | ((b2 & 0x30) >>> 4)));\r\n\r\n            /* b3 */\r\n            do {\r\n                b3 = data[i++];\r\n                if (b3 == 61) {\r\n                    return buf.toByteArray();\r\n                }\r\n                b3 = base64DecodeChars[b3];\r\n            } while (i < len && b3 == -1);\r\n            if (b3 == -1) {\r\n                break;\r\n            }\r\n            buf.write((int) (((b2 & 0x0f) << 4) | ((b3 & 0x3c) >>> 2)));\r\n\r\n            /* b4 */\r\n            do {\r\n                b4 = data[i++];\r\n                if (b4 == 61) {\r\n                    return buf.toByteArray();\r\n                }\r\n                b4 = base64DecodeChars[b4];\r\n            } while (i < len && b4 == -1);\r\n            if (b4 == -1) {\r\n                break;\r\n            }\r\n            buf.write((int) (((b3 & 0x03) << 6) | b4));\r\n        }\r\n        return buf.toByteArray();\r\n    }\r\n}"
  },
  {
    "path": "src/main/java/org/xxtea/XXTEA.java",
    "content": "/**********************************************************\\\r\n|                                                          |\r\n| XXTEA.java                                               |\r\n|                                                          |\r\n| XXTEA encryption algorithm library for Java.             |\r\n|                                                          |\r\n| Encryption Algorithm Authors:                            |\r\n|      David J. Wheeler                                    |\r\n|      Roger M. Needham                                    |\r\n|                                                          |\r\n| Code Authors: Ma Bingyao <mabingyao@gmail.com>           |\r\n| LastModified: Mar 10, 2015                               |\r\n|                                                          |\r\n\\**********************************************************/\r\n\r\npackage org.xxtea;\r\n\r\nimport java.io.UnsupportedEncodingException;\r\n\r\npublic final class XXTEA {\r\n\r\n    private static final int DELTA = 0x9E3779B9;\r\n\r\n    private static int MX(int sum, int y, int z, int p, int e, int[] k) {\r\n        return (z >>> 5 ^ y << 2) + (y >>> 3 ^ z << 4) ^ (sum ^ y) + (k[p & 3 ^ e] ^ z);\r\n    }\r\n\r\n    private XXTEA() {}\r\n\r\n    public static final byte[] encrypt(byte[] data, byte[] key) {\r\n        if (data.length == 0) {\r\n            return data;\r\n        }\r\n        return toByteArray(\r\n                encrypt(toIntArray(data, true), toIntArray(fixKey(key), false)), false);\r\n    }\r\n    public static final byte[] encrypt(String data, byte[] key) {\r\n        try {\r\n            return encrypt(data.getBytes(\"UTF-8\"), key);\r\n        }\r\n        catch (UnsupportedEncodingException e) {\r\n            return null;\r\n        }\r\n    }\r\n    public static final byte[] encrypt(byte[] data, String key) {\r\n        try {\r\n            return encrypt(data, key.getBytes(\"UTF-8\"));\r\n        }\r\n        catch (UnsupportedEncodingException e) {\r\n            return null;\r\n        }\r\n    }\r\n    public static final byte[] encrypt(String data, String key) {\r\n        try {\r\n            return encrypt(data.getBytes(\"UTF-8\"), key.getBytes(\"UTF-8\"));\r\n        }\r\n        catch (UnsupportedEncodingException e) {\r\n            return null;\r\n        }\r\n    }\r\n    public static final String encryptToBase64String(byte[] data, byte[] key) {\r\n        byte[] bytes = encrypt(data, key);\r\n        if (bytes == null) return null;\r\n        return Base64.encode(bytes);\r\n    }\r\n    public static final String encryptToBase64String(String data, byte[] key) {\r\n        byte[] bytes = encrypt(data, key);\r\n        if (bytes == null) return null;\r\n        return Base64.encode(bytes);\r\n    }\r\n    public static final String encryptToBase64String(byte[] data, String key) {\r\n        byte[] bytes = encrypt(data, key);\r\n        if (bytes == null) return null;\r\n        return Base64.encode(bytes);\r\n    }\r\n    public static final String encryptToBase64String(String data, String key) {\r\n        byte[] bytes = encrypt(data, key);\r\n        if (bytes == null) return null;\r\n        return Base64.encode(bytes);\r\n    }\r\n    public static final byte[] decrypt(byte[] data, byte[] key) {\r\n        if (data.length == 0) {\r\n            return data;\r\n        }\r\n        return toByteArray(\r\n                decrypt(toIntArray(data, false), toIntArray(fixKey(key), false)), true);\r\n    }\r\n    public static final byte[] decrypt(byte[] data, String key) {\r\n        try {\r\n            return decrypt(data, key.getBytes(\"UTF-8\"));\r\n        }\r\n        catch (UnsupportedEncodingException e) {\r\n            return null;\r\n        }\r\n    }\r\n    public static final byte[] decryptBase64String(String data, byte[] key) {\r\n        return decrypt(Base64.decode(data), key);\r\n    }\r\n    public static final byte[] decryptBase64String(String data, String key) {\r\n        return decrypt(Base64.decode(data), key);\r\n    }\r\n    public static final String decryptToString(byte[] data, byte[] key) {\r\n        try {\r\n            byte[] bytes = decrypt(data, key);\r\n            if (bytes == null) return null;\r\n            return new String(bytes, \"UTF-8\");\r\n        }\r\n        catch (UnsupportedEncodingException ex) {\r\n            return null;\r\n        }\r\n    }\r\n    public static final String decryptToString(byte[] data, String key) {\r\n        try {\r\n            byte[] bytes = decrypt(data, key);\r\n            if (bytes == null) return null;\r\n            return new String(bytes, \"UTF-8\");\r\n        }\r\n        catch (UnsupportedEncodingException ex) {\r\n            return null;\r\n        }\r\n    }\r\n    public static final String decryptBase64StringToString(String data, byte[] key) {\r\n        try {\r\n            byte[] bytes = decrypt(Base64.decode(data), key);\r\n            if (bytes == null) return null;\r\n            return new String(bytes, \"UTF-8\");\r\n        }\r\n        catch (UnsupportedEncodingException ex) {\r\n            return null;\r\n        }\r\n    }\r\n    public static final String decryptBase64StringToString(String data, String key) {\r\n        try {\r\n            byte[] bytes = decrypt(Base64.decode(data), key);\r\n            if (bytes == null) return null;\r\n            return new String(bytes, \"UTF-8\");\r\n        }\r\n        catch (UnsupportedEncodingException ex) {\r\n            return null;\r\n        }\r\n    }\r\n\r\n    private static int[] encrypt(int[] v, int[] k) {\r\n        int n = v.length - 1;\r\n\r\n        if (n < 1) {\r\n            return v;\r\n        }\r\n        int p, q = 6 + 52 / (n + 1);\r\n        int z = v[n], y, sum = 0, e;\r\n\r\n        while (q-- > 0) {\r\n            sum = sum + DELTA;\r\n            e = sum >>> 2 & 3;\r\n            for (p = 0; p < n; p++) {\r\n                y = v[p + 1];\r\n                z = v[p] += MX(sum, y, z, p, e, k);\r\n            }\r\n            y = v[0];\r\n            z = v[n] += MX(sum, y, z, p, e, k);\r\n        }\r\n        return v;\r\n    }\r\n\r\n    private static int[] decrypt(int[] v, int[] k) {\r\n        int n = v.length - 1;\r\n\r\n        if (n < 1) {\r\n            return v;\r\n        }\r\n        int p, q = 6 + 52 / (n + 1);\r\n        int z, y = v[0], sum = q * DELTA, e;\r\n\r\n        while (sum != 0) {\r\n            e = sum >>> 2 & 3;\r\n            for (p = n; p > 0; p--) {\r\n                z = v[p - 1];\r\n                y = v[p] -= MX(sum, y, z, p, e, k);\r\n            }\r\n            z = v[n];\r\n            y = v[0] -= MX(sum, y, z, p, e, k);\r\n            sum = sum - DELTA;\r\n        }\r\n        return v;\r\n    }\r\n\r\n    private static byte[] fixKey(byte[] key) {\r\n        if (key.length == 16) return key;\r\n        byte[] fixedkey = new byte[16];\r\n        if (key.length < 16) {\r\n            System.arraycopy(key, 0, fixedkey, 0, key.length);\r\n        }\r\n        else {\r\n            System.arraycopy(key, 0, fixedkey, 0, 16);\r\n        }\r\n        return fixedkey;\r\n    }\r\n\r\n    private static int[] toIntArray(byte[] data, boolean includeLength) {\r\n        int n = (((data.length & 3) == 0)\r\n                ? (data.length >>> 2)\r\n                : ((data.length >>> 2) + 1));\r\n        int[] result;\r\n\r\n        if (includeLength) {\r\n            result = new int[n + 1];\r\n            result[n] = data.length;\r\n        }\r\n        else {\r\n            result = new int[n];\r\n        }\r\n        n = data.length;\r\n        for (int i = 0; i < n; ++i) {\r\n            result[i >>> 2] |= (0x000000ff & data[i]) << ((i & 3) << 3);\r\n        }\r\n        return result;\r\n    }\r\n\r\n    private static byte[] toByteArray(int[] data, boolean includeLength) {\r\n        int n = data.length << 2;\r\n\r\n        if (includeLength) {\r\n            int m = data[data.length - 1];\r\n            n -= 4;\r\n            if ((m < n - 3) || (m > n)) {\r\n                return null;\r\n            }\r\n            n = m;\r\n        }\r\n        byte[] result = new byte[n];\r\n\r\n        for (int i = 0; i < n; ++i) {\r\n            result[i] = (byte) (data[i >>> 2] >>> ((i & 3) << 3));\r\n        }\r\n        return result;\r\n    }\r\n}\r\n"
  }
]