Android开发笔记（七十三）代码混淆与反破解

proguard.config=${sdk.dir}/tools/proguard/proguard-android.txt:proguard-project.txt

#指定代码的压缩级别
-optimizationpasses 5
#是否使用大小写混合
-dontusemixedcaseclassnames
#优化/不优化输入的类文件
-dontoptimize
#是否混淆第三方jar包
-dontskipnonpubliclibraryclasses
#混淆时是否做预校验
-dontpreverify
#混淆时是否记录日志
-verbose
#混淆时所采用的算法
-optimizations !code/simplification/arithmetic,!field/*,!class/merging/*
#保护注解
-keepattributes *Annotation*

#保持JNI用到的native方法不被混淆
-keepclasseswithmembers class * {
    native <methods>;
}

#保持自定义控件的构造函数不被混淆，因为自定义控件很可能直接写在布局文件中
-keepclasseswithmembers class * {
    public <init>(android.content.Context, android.util.AttributeSet);
}

#保持自定义控件的构造函数不被混淆
-keepclasseswithmembers class * {
    public <init>(android.content.Context, android.util.AttributeSet, int);
}

#保持布局中onClick属性指定的方法不被混淆
-keepclassmembers class * extends android.app.Activity {
   public void *(android.view.View);
}

#保持枚举enum类不被混淆
-keepclassmembers enum * {
    public static **[] values();
    public static ** valueOf(java.lang.String);
}

#保持序列化的Parcelable不被混淆
-keep class * implements android.os.Parcelable {
  public static final android.os.Parcelable$Creator *;
}

#指定哪些第三方jar包需要混淆
#-libraryjars libs/bcprov-jdk16-1.46.jar

#保持哪些系统组件类不被混淆
-keep public class * extends android.app.Fragment  
-keep public class * extends android.app.Activity
-keep public class * extends android.app.Application
-keep public class * extends android.app.Service
-keep public class * extends android.content.BroadcastReceiver
-keep public class * extends android.content.ContentProvider
-keep public class * extends android.app.backup.BackupAgentHelper
-keep public class * extends android.preference.Preference
-keep public class * extends android.support.v4.**
-keep public class com.android.vending.licensing.ILicensingService

#保持哪些第三方jar包不被混淆
-keep class org.bouncycastle.**
-dontwarn org.bouncycastle.**

-keep class com.example.exmweb.WebActivity$MobileSignal{
    public <fields>;
    public <methods>;
}

	public static String getSignMD5(Context context) {
		String signMD5 = "";
		String packageName = context.getPackageName();
		PackageManager pkgMgr = context.getPackageManager();
		PackageInfo info = null;
		try {
			info = pkgMgr.getPackageInfo(packageName,
					PackageManager.GET_SIGNATURES);
		} catch (PackageManager.NameNotFoundException e) {
			return signMD5;
		}
		if (info == null) {
			return signMD5;
		} else {
			Signature[] signs = info.signatures;
			if ((signs == null) || (signs.length == 0)) {
				return signMD5;
			} else {
				Signature sign = signs[0];
				signMD5 = MD5Util.encrypBytes(sign.toByteArray());
				return signMD5;
			}
		}
	}

		//花指令开始
		BufferedReader br = null;
		try {
			br = new BufferedReader(new FileReader("/proc/net/arp"));
			String line;
			while ((line = br.readLine()) != null) {
				String[] splitted = line.split(" +");
				if (splitted.length >= 0) {
					break;
				}
			}
		} catch (Exception e) {
			e.printStackTrace();
		} finally {
			try {
				br.close();
			} catch (IOException e) {
				e.printStackTrace();
			}
		}
		//花指令结束