README.md

app/build.gradle

@@ -1,12 +1,12 @@
 apply plugin: 'com.android.application'
 
 android {
-    compileSdkVersion 28
+    compileSdkVersion 31
 
     defaultConfig {
         applicationId "cn.android.sample"
         minSdkVersion 16
-        targetSdkVersion 28
+        targetSdkVersion 31
         versionCode 1
         versionName "1.0"
 
@@ -52,6 +52,7 @@ android {
     externalNativeBuild {
         cmake {
             path "CMakeLists.txt"
+            version '3.10.2'
         }
     }
     //这里libold.so 是hook用的实际是apk 为了读源文件签名hook
@@ -61,7 +62,7 @@ android {
 
 dependencies {
     implementation fileTree(include: ['*.jar'], dir: 'libs')
-    implementation 'androidx.appcompat:appcompat:1.0.0'
-    implementation 'androidx.constraintlayout:constraintlayout:1.1.3'
+    implementation 'androidx.appcompat:appcompat:1.3.1'
+    implementation 'androidx.constraintlayout:constraintlayout:2.1.1'
     implementation project(':apisecurity')
 }

app/src/main/AndroidManifest.xml

@@ -11,9 +11,9 @@
         android:roundIcon="@mipmap/ic_launcher_round"
         android:supportsRtl="true"
         android:theme="@style/AppTheme"
-
         tools:ignore="GoogleAppIndexingWarning">
-        <activity android:name=".MainActivity">
+        <activity android:name=".MainActivity"
+            android:exported="true">
             <intent-filter>
                 <action android:name="android.intent.action.MAIN" />
 

app/src/main/java/cn/android/sample/FileUtils.java

@@ -8,14 +8,10 @@ import java.io.InputStream;
 import java.io.InputStreamReader;
 import java.io.OutputStream;
 import java.io.PrintWriter;
+import java.security.MessageDigest;
 
 /**
  * @author mahongyin
- * @Project Android-API-Security-master
- * @Package cn.android.sample
- * @data 2020-04-11 20:25
- * @CopyRight mhy.work@qq.com
- * @description:
  * raw、assets（项目内的文件）
  * getFilesDir()、getCacheDir()（app私有储存文件目录，app被卸载时文件被删除，不用考虑6.0及以上权限限制）
  * Environment.getExternalStorageDirectory()（外部储存目录，其他应用可以访问，文件不会因为app被卸载而删除，）
@@ -89,5 +85,33 @@ class FileUtils {
         } catch (Exception e) {
         }
     }
+
+    /**
+     * 小写  32位
+     * 验证 apk 文件一致性！  需要同一versionCode
+     */
+    public static String getMD5(File file) {
+        InputStream in = null;
+        try {
+            in = new FileInputStream(file);
+            StringBuffer md5 = new StringBuffer();
+            MessageDigest md = MessageDigest.getInstance("MD5");
+            byte[] dataBytes = new byte[1024];
+
+            int nread = 0;
+            while ((nread = in.read(dataBytes)) != -1) {
+                md.update(dataBytes, 0, nread);
+            }
+            byte[] mdbytes = md.digest();
+
+            for (int i = 0; i < mdbytes.length; i++) {
+                md5.append(Integer.toString((mdbytes[i] & 0xff) + 0x100, 16).substring(1));
+            }
+            return md5.toString().toLowerCase();
+        } catch (Exception e) {
+            e.printStackTrace();
+        }
+        return null;
+    }
 }