Repository: xxtea/xxtea-java Branch: master Commit: 2c332d1f03eb Files: 9 Total size: 21.5 KB Directory structure: gitextract_o7qhb6nd/ ├── .gitignore ├── LICENSE.md ├── README.md ├── README_zh_CN.md ├── example/ │ ├── pom.xml │ └── src/ │ └── main/ │ └── java/ │ └── org/ │ └── xxtea/ │ └── example/ │ └── Main.java ├── pom.xml └── src/ └── main/ └── java/ └── org/ └── xxtea/ ├── Base64.java └── XXTEA.java ================================================ FILE CONTENTS ================================================ ================================================ FILE: .gitignore ================================================ /target/ /example/target/ ================================================ FILE: LICENSE.md ================================================ The MIT License (MIT) Copyright (c) 2008-2016 Ma Bingyao Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the "Software"), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions: The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software. THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. ================================================ FILE: README.md ================================================ # XXTEA for Java

[![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) [![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/) [![GitHub release](https://img.shields.io/github/release/xxtea/xxtea-java.svg)](https://github.com/xxtea/xxtea-java/releases) [![License](https://img.shields.io/github/license/xxtea/xxtea-java.svg)](http://opensource.org/licenses/MIT) ## 简介 XXTEA 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。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[]。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。 ## 使用 ```java package org.xxtea.test; import org.xxtea.XXTEA; public class Main { public static void main(String[] args) { String str = "Hello World! 你好，中国！"; String key = "1234567890"; byte[] encrypt_data = XXTEA.encrypt(str, key); String decrypt_data = XXTEA.decryptToString(encrypt_data, key); assert(str.equals(decrypt_data)); } } ``` ================================================ FILE: example/pom.xml ================================================ 4.0.0 org.xxtea example 1.0-SNAPSHOT jar ${project.groupId} xxtea-java 1.0.5 UTF-8 1.7 1.7 ================================================ FILE: example/src/main/java/org/xxtea/example/Main.java ================================================ package org.xxtea.example; import org.xxtea.XXTEA; public class Main { public static void main(String[] args) { String str = "Hello World! 你好，中国！"; String key = "1234567890"; String encrypt_data = XXTEA.encryptToBase64String(str, key); System.out.println(encrypt_data); assert("QncB1C0rHQoZ1eRiPM4dsZtRi9pNrp7sqvX76cFXvrrIHXL6".equals(encrypt_data)); String decrypt_data = XXTEA.decryptBase64StringToString(encrypt_data, key); assert(str.equals(decrypt_data)); } } ================================================ FILE: pom.xml ================================================ 4.0.0 org.xxtea xxtea-java 1.0.5 XXTEA for Java XXTEA is a fast and secure encryption algorithm. This is a XXTEA library for Java. It 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[]. org.sonatype.oss oss-parent 9 MIT License https://raw.github.com/xxtea/xxtea-java/master/LICENSE.md scm:git:https://github.com/xxtea/xxtea-java.git scm:git:https://github.com/xxtea/xxtea-java.git https://github.com/xxtea/xxtea-java v1.0.5 andot Ma Bingyao mabingyao@gmail.com GitHub Issues https://github.com/xxtea/xxtea-java/issues UTF-8 UTF-8 org.apache.maven.plugins maven-compiler-plugin 3.0 org.apache.maven.plugins maven-release-plugin 2.4 v@{project.version} org.apache.maven.plugins maven-source-plugin 2.2.1 attach-sources jar org.apache.maven.plugins maven-gpg-plugin 1.5 sign-artifacts verify sign org.apache.maven.plugins maven-javadoc-plugin 2.9 attach-javadocs jar ================================================ FILE: src/main/java/org/xxtea/Base64.java ================================================ /**********************************************************\ | | | Base64.java | | | | Base64 library for Java. | | | | Code Authors: Ma Bingyao | | LastModified: Mar 10, 2015 | | | \**********************************************************/ package org.xxtea; import java.io.ByteArrayOutputStream; final class Base64 { private static final char[] base64EncodeChars = new char[] { 'A', 'B', 'C', 'D', 'E', 'F', 'G', 'H', 'I', 'J', 'K', 'L', 'M', 'N', 'O', 'P', 'Q', 'R', 'S', 'T', 'U', 'V', 'W', 'X', 'Y', 'Z', 'a', 'b', 'c', 'd', 'e', 'f', 'g', 'h', 'i', 'j', 'k', 'l', 'm', 'n', 'o', 'p', 'q', 'r', 's', 't', 'u', 'v', 'w', 'x', 'y', 'z', '0', '1', '2', '3', '4', '5', '6', '7', '8', '9', '+', '/' }; private static final byte[] base64DecodeChars = new byte[] { -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, 62, -1, -1, -1, 63, 52, 53, 54, 55, 56, 57, 58, 59, 60, 61, -1, -1, -1, -1, -1, -1, -1, 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, -1, -1, -1, -1, -1, -1, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47, 48, 49, 50, 51, -1, -1, -1, -1, -1 }; private Base64() {} public static final String encode(byte[] data) { StringBuilder sb = new StringBuilder(); int r = data.length % 3; int len = data.length - r; int i = 0; int c; while (i < len) { c = (0x000000ff & data[i++]) << 16 | (0x000000ff & data[i++]) << 8 | (0x000000ff & data[i++]); sb.append(base64EncodeChars[c >> 18]); sb.append(base64EncodeChars[c >> 12 & 0x3f]); sb.append(base64EncodeChars[c >> 6 & 0x3f]); sb.append(base64EncodeChars[c & 0x3f]); } if (r == 1) { c = 0x000000ff & data[i++]; sb.append(base64EncodeChars[c >> 2]); sb.append(base64EncodeChars[(c & 0x03) << 4]); sb.append("=="); } else if (r == 2) { c = (0x000000ff & data[i++]) << 8 | (0x000000ff & data[i++]); sb.append(base64EncodeChars[c >> 10]); sb.append(base64EncodeChars[c >> 4 & 0x3f]); sb.append(base64EncodeChars[(c & 0x0f) << 2]); sb.append("="); } return sb.toString(); } public static final byte[] decode(String str) { byte[] data = str.getBytes(); int len = data.length; ByteArrayOutputStream buf = new ByteArrayOutputStream(len); int i = 0; int b1, b2, b3, b4; while (i < len) { /* b1 */ do { b1 = base64DecodeChars[data[i++]]; } while (i < len && b1 == -1); if (b1 == -1) { break; } /* b2 */ do { b2 = base64DecodeChars[data[i++]]; } while (i < len && b2 == -1); if (b2 == -1) { break; } buf.write((int) ((b1 << 2) | ((b2 & 0x30) >>> 4))); /* b3 */ do { b3 = data[i++]; if (b3 == 61) { return buf.toByteArray(); } b3 = base64DecodeChars[b3]; } while (i < len && b3 == -1); if (b3 == -1) { break; } buf.write((int) (((b2 & 0x0f) << 4) | ((b3 & 0x3c) >>> 2))); /* b4 */ do { b4 = data[i++]; if (b4 == 61) { return buf.toByteArray(); } b4 = base64DecodeChars[b4]; } while (i < len && b4 == -1); if (b4 == -1) { break; } buf.write((int) (((b3 & 0x03) << 6) | b4)); } return buf.toByteArray(); } } ================================================ FILE: src/main/java/org/xxtea/XXTEA.java ================================================ /**********************************************************\ | | | XXTEA.java | | | | XXTEA encryption algorithm library for Java. | | | | Encryption Algorithm Authors: | | David J. Wheeler | | Roger M. Needham | | | | Code Authors: Ma Bingyao | | LastModified: Mar 10, 2015 | | | \**********************************************************/ package org.xxtea; import java.io.UnsupportedEncodingException; public final class XXTEA { private static final int DELTA = 0x9E3779B9; private static int MX(int sum, int y, int z, int p, int e, int[] k) { return (z >>> 5 ^ y << 2) + (y >>> 3 ^ z << 4) ^ (sum ^ y) + (k[p & 3 ^ e] ^ z); } private XXTEA() {} public static final byte[] encrypt(byte[] data, byte[] key) { if (data.length == 0) { return data; } return toByteArray( encrypt(toIntArray(data, true), toIntArray(fixKey(key), false)), false); } public static final byte[] encrypt(String data, byte[] key) { try { return encrypt(data.getBytes("UTF-8"), key); } catch (UnsupportedEncodingException e) { return null; } } public static final byte[] encrypt(byte[] data, String key) { try { return encrypt(data, key.getBytes("UTF-8")); } catch (UnsupportedEncodingException e) { return null; } } public static final byte[] encrypt(String data, String key) { try { return encrypt(data.getBytes("UTF-8"), key.getBytes("UTF-8")); } catch (UnsupportedEncodingException e) { return null; } } public static final String encryptToBase64String(byte[] data, byte[] key) { byte[] bytes = encrypt(data, key); if (bytes == null) return null; return Base64.encode(bytes); } public static final String encryptToBase64String(String data, byte[] key) { byte[] bytes = encrypt(data, key); if (bytes == null) return null; return Base64.encode(bytes); } public static final String encryptToBase64String(byte[] data, String key) { byte[] bytes = encrypt(data, key); if (bytes == null) return null; return Base64.encode(bytes); } public static final String encryptToBase64String(String data, String key) { byte[] bytes = encrypt(data, key); if (bytes == null) return null; return Base64.encode(bytes); } public static final byte[] decrypt(byte[] data, byte[] key) { if (data.length == 0) { return data; } return toByteArray( decrypt(toIntArray(data, false), toIntArray(fixKey(key), false)), true); } public static final byte[] decrypt(byte[] data, String key) { try { return decrypt(data, key.getBytes("UTF-8")); } catch (UnsupportedEncodingException e) { return null; } } public static final byte[] decryptBase64String(String data, byte[] key) { return decrypt(Base64.decode(data), key); } public static final byte[] decryptBase64String(String data, String key) { return decrypt(Base64.decode(data), key); } public static final String decryptToString(byte[] data, byte[] key) { try { byte[] bytes = decrypt(data, key); if (bytes == null) return null; return new String(bytes, "UTF-8"); } catch (UnsupportedEncodingException ex) { return null; } } public static final String decryptToString(byte[] data, String key) { try { byte[] bytes = decrypt(data, key); if (bytes == null) return null; return new String(bytes, "UTF-8"); } catch (UnsupportedEncodingException ex) { return null; } } public static final String decryptBase64StringToString(String data, byte[] key) { try { byte[] bytes = decrypt(Base64.decode(data), key); if (bytes == null) return null; return new String(bytes, "UTF-8"); } catch (UnsupportedEncodingException ex) { return null; } } public static final String decryptBase64StringToString(String data, String key) { try { byte[] bytes = decrypt(Base64.decode(data), key); if (bytes == null) return null; return new String(bytes, "UTF-8"); } catch (UnsupportedEncodingException ex) { return null; } } private static int[] encrypt(int[] v, int[] k) { int n = v.length - 1; if (n < 1) { return v; } int p, q = 6 + 52 / (n + 1); int z = v[n], y, sum = 0, e; while (q-- > 0) { sum = sum + DELTA; e = sum >>> 2 & 3; for (p = 0; p < n; p++) { y = v[p + 1]; z = v[p] += MX(sum, y, z, p, e, k); } y = v[0]; z = v[n] += MX(sum, y, z, p, e, k); } return v; } private static int[] decrypt(int[] v, int[] k) { int n = v.length - 1; if (n < 1) { return v; } int p, q = 6 + 52 / (n + 1); int z, y = v[0], sum = q * DELTA, e; while (sum != 0) { e = sum >>> 2 & 3; for (p = n; p > 0; p--) { z = v[p - 1]; y = v[p] -= MX(sum, y, z, p, e, k); } z = v[n]; y = v[0] -= MX(sum, y, z, p, e, k); sum = sum - DELTA; } return v; } private static byte[] fixKey(byte[] key) { if (key.length == 16) return key; byte[] fixedkey = new byte[16]; if (key.length < 16) { System.arraycopy(key, 0, fixedkey, 0, key.length); } else { System.arraycopy(key, 0, fixedkey, 0, 16); } return fixedkey; } private static int[] toIntArray(byte[] data, boolean includeLength) { int n = (((data.length & 3) == 0) ? (data.length >>> 2) : ((data.length >>> 2) + 1)); int[] result; if (includeLength) { result = new int[n + 1]; result[n] = data.length; } else { result = new int[n]; } n = data.length; for (int i = 0; i < n; ++i) { result[i >>> 2] |= (0x000000ff & data[i]) << ((i & 3) << 3); } return result; } private static byte[] toByteArray(int[] data, boolean includeLength) { int n = data.length << 2; if (includeLength) { int m = data[data.length - 1]; n -= 4; if ((m < n - 3) || (m > n)) { return null; } n = m; } byte[] result = new byte[n]; for (int i = 0; i < n; ++i) { result[i] = (byte) (data[i >>> 2] >>> ((i & 3) << 3)); } return result; } }