陌陌apksign的计算方法

有兴趣的可以看一下 com.immomo.momo.e.J()
因为是网络程序,所以验证是发到网上进行验证.连接用了HTTPS,防抓包,思路不错.

代码:

 public static String J()
  {
    String str1 = a.getApplicationInfo().publicSourceDir;
    Class localClass = Class.forName("android.content.pm.PackageParser");
    Class[] arrayOfClass1 = new Class[4];
    arrayOfClass1[0] = File.class;
    arrayOfClass1[1] = String.class;
    arrayOfClass1[2] = DisplayMetrics.class;
    arrayOfClass1[3] = Integer.TYPE;
    Method localMethod1 = localClass.getMethod("parsePackage", arrayOfClass1);
    Class[] arrayOfClass2 = new Class[1];
    arrayOfClass2[0] = String.class;
    Constructor localConstructor = localClass.getConstructor(arrayOfClass2);
    Object[] arrayOfObject1 = new Object[1];
    arrayOfObject1[0] = "";
    Object localObject1 = localConstructor.newInstance(arrayOfObject1);
    Object[] arrayOfObject2 = new Object[4];
    arrayOfObject2[0] = new File(str1);
    arrayOfObject2[1] = null;
    arrayOfObject2[2] = a.getResources().getDisplayMetrics();
    arrayOfObject2[3] = Integer.valueOf(4);
    Object localObject2 = localMethod1.invoke(localObject1, arrayOfObject2);
    Class[] arrayOfClass3 = new Class[2];
    arrayOfClass3[0] = Class.forName("android.content.pm.PackageParser$Package");
    arrayOfClass3[1] = Integer.TYPE;
    Method localMethod2 = localClass.getMethod("collectCertificates", arrayOfClass3);
    Object[] arrayOfObject3 = new Object[2];
    arrayOfObject3[0] = localObject2;
    arrayOfObject3[1] = Integer.valueOf(64);
    localMethod2.invoke(localObject1, arrayOfObject3);
    Signature[] arrayOfSignature = (Signature[])localObject2.getClass().getField("mSignatures").get(localObject2);
    Signature localSignature;
    if (arrayOfSignature.length > 0)
    {
      localSignature = arrayOfSignature[0];
      if (localSignature == null)
        break label267;
    }
    label267: for (String str2 = a.j(localSignature.toCharsString()); ; str2 = null) //a.j=>MD5
    {
      return str2;
      localSignature = null;
      break;
    }
  }

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