feat: 获取加密激活码
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168
app/src/main/java/com/xwad/os/utils/CryptoUtils.java
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168
app/src/main/java/com/xwad/os/utils/CryptoUtils.java
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package com.xwad.os.utils;
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import android.util.Base64;
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import android.util.Log;
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import java.nio.charset.StandardCharsets;
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import java.security.GeneralSecurityException;
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import java.security.spec.AlgorithmParameterSpec;
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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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/**
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* Android 对称加密解密工具类
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* 支持 AES/DES/TripleDES + ECB/CBC/CFB/OFB/CTR + PKCS5Padding 等
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*/
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public class CryptoUtils {
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/**
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* 简化解密方法：仅需传入待解密字符串
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*
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* @param data 待解密的字符串
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* @return 解密后的原文
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* @throws Exception 解密异常
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*/
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public static String decrypt(String data) {
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String KEY = JgyUtils.getAesKey();
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String IV = JgyUtils.getAesIv();
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try {
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Cipher cipher = Cipher.getInstance("AES/CBC/PKCS5Padding");
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// 解码密钥
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byte[] keyBytes = KEY.getBytes(StandardCharsets.UTF_8);
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SecretKeySpec secretKey = new SecretKeySpec(keyBytes, "AES");
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// 初始化Cipher
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// 解码偏移量IV
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byte[] ivBytes = IV.getBytes(StandardCharsets.UTF_8);
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AlgorithmParameterSpec ivSpec = new IvParameterSpec(ivBytes);
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cipher.init(Cipher.DECRYPT_MODE, secretKey, ivSpec);
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// 解码待解密数据
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byte[] dataBytes = Base64.decode(data, Base64.DEFAULT);
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// 执行解密并返回字符串
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byte[] decryptBytes = cipher.doFinal(dataBytes);
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return new String(decryptBytes, StandardCharsets.UTF_8);
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} catch (GeneralSecurityException e) {
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e.printStackTrace();
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Log.e("CryptoUtils", "decrypt: " + e.getMessage());
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}
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return "";
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}
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/**
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* 对称解密核心方法
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*
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* @param data 待解密的字符串
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* @param type 加密类型：AES / DES / TRIPLEDES
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* @param mode 模式：ECB / CBC / CFB / OFB / CTR
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* @param pad 填充方式：PKCS5Padding / ISO10126Padding / NoPadding
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* @param key 密钥字符串
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* @param keyType 密钥编码：Utf8 / Base64 / Hex
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* @param iv 偏移量（ECB模式无需）
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* @param ivType 偏移量编码：Utf8 / Base64 / Hex
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* @param isBase64 待解密数据编码：true=Base64 false=Hex
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* @return 解密后的原始字符串
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* @throws Exception 解密异常（密钥长度/算法不支持/数据错误等）
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*/
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public static String decrypt(
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String data,
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String type,
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String mode,
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String pad,
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String key,
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String keyType,
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String iv,
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String ivType,
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boolean isBase64
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) throws Exception {
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// 1. 拼接算法全称
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String algorithm = type + "/" + mode + "/" + pad;
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Cipher cipher = Cipher.getInstance(algorithm);
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// 2. 解码密钥（修复：== 改为 equals() 字符串值比较）
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byte[] keyBytes;
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if ("Hex".equals(keyType)) {
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keyBytes = hex2Bytes(key);
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} else if ("Base64".equals(keyType)) {
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keyBytes = Base64.decode(key, Base64.DEFAULT);
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} else {
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// 强制指定UTF-8，避免乱码
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keyBytes = key.getBytes(StandardCharsets.UTF_8);
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}
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SecretKeySpec secretKey = new SecretKeySpec(keyBytes, type);
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// 3. 初始化Cipher（ECB无IV，其他模式需要IV）
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if ("ECB".equals(mode)) {
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cipher.init(Cipher.DECRYPT_MODE, secretKey);
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} else {
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// 解码偏移量IV
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byte[] ivBytes;
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if ("Hex".equals(ivType)) {
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ivBytes = hex2Bytes(iv);
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} else if ("Base64".equals(ivType)) {
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ivBytes = Base64.decode(iv, Base64.DEFAULT);
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} else {
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ivBytes = iv.getBytes(StandardCharsets.UTF_8);
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}
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AlgorithmParameterSpec ivSpec = new IvParameterSpec(ivBytes);
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cipher.init(Cipher.DECRYPT_MODE, secretKey, ivSpec);
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}
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// 4. 解码待解密数据
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byte[] dataBytes;
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if (isBase64) {
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dataBytes = Base64.decode(data, Base64.DEFAULT);
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} else {
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dataBytes = hex2Bytes(data);
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}
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// 5. 执行解密 + 转字符串
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byte[] decryptBytes = cipher.doFinal(dataBytes);
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return new String(decryptBytes, StandardCharsets.UTF_8);
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}
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/**
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* 全Android版本兼容的 Hex字符串 → 字节数组 解码
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* 替代Apache Commons-Codec的Hex.decodeHex
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*/
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private static byte[] hex2Bytes(String hexStr) {
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if (hexStr == null || hexStr.length() == 0) return new byte[0];
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byte[] bytes = new byte[hexStr.length() / 2];
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for (int i = 0; i < bytes.length; i++) {
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int high = Character.digit(hexStr.charAt(2 * i), 16);
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int low = Character.digit(hexStr.charAt(2 * i + 1), 16);
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bytes[i] = (byte) (high << 4 | low);
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}
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return bytes;
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}
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// ------------------- 你的业务调用示例（直接复制到Android Activity/ViewModel中使用） -------------------
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public static void testDecrypt() {
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// 你的原始配置参数（完全不变）
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String data = "88072p8780";
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String type = "AES";
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String mode = "CBC";
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String pad = "PKCS5Padding";
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String key = "fRW5b5FI4uG32HISvVZ40QFSkyvXYwP8";
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String keyType = "Utf8";
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String iv = "7COBgH2wUtJnPPSX";
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String ivType = "Utf8";
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boolean isBase64 = true;
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try {
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// 执行解密
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String result = decrypt(data, type, mode, pad, key, keyType, iv, ivType, isBase64);
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// 输出结果（Android中用Log.d，不要用System.out）
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Log.d("Crypto", "解密结果：" + result);
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} catch (Exception e) {
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// 异常捕获（密钥错误/算法不支持/数据被篡改等）
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e.printStackTrace();
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Log.e("Crypto", "解密失败：" + e.getMessage());
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}
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}
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}
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