Enable TLS 1.2 in Android 4.4

Question

I use Retrofit and OkHttp3 for making requests. I konw that in Android 4.4 TLS 1.1 and TLS 1.2 are not enabled by defult. So i\'m trying to enable them. But so far i had no

Answer 1

Please try this: https://developer.android.com/training/articles/security-gms-provider.html.

It is using https://developers.google.com/android/reference/com/google/android/gms/security/ProviderInstaller, you need to have Google API in your project.

You need to just call in your Application:

@Override
public void onCreate() {
    super.onCreate();
    try {
        ProviderInstaller.installIfNeeded(this);
    } catch (GooglePlayServicesRepairableException | GooglePlayServicesNotAvailableException e) {
        e.printStackTrace();
    }
}

You should also remove your custom SSLfactory.

Answer 2

That error usually occurs when android falls back to SSLv3 from TLSv1. It is a bug in pre-lollipop devices.

The solution is to remove SSLv3 using Android's security Provider.

try this solution:

private void updateAndroidSecurityProvider(Activity callingActivity) {
    try {
        ProviderInstaller.installIfNeeded(this);
    } catch (GooglePlayServicesRepairableException e) {
    GooglePlayServicesUtil.getErrorDialog(e.getConnectionStatusCode(), callingActivity, 0);
    } catch (GooglePlayServicesNotAvailableException e) {
        Log.e("SecurityException", "Google Play Services not available.");
    }
}