But you can check for the checksum in dozens of differents places in your (ofuscated of course) code. It´s very easy and very fast This will raising the bar for piracy one step more
On Oct 22, 9:18 am, noriato <[email protected]> wrote: > So then the check for the checksum could be removed... same problem. > Peter > > On 22 Okt., 07:50, Jose <[email protected]> wrote: > > > I think that an easy way to tamper-proof apk would be: > > > 1) Android Market computes a checksum for the apk when the apk is > > uploaded > > 2) In the License Response (eg. in one extra), Android Market send > > this value > > 3) The aplication computes the same checsum of itself. If the values > > don`t match, just finis() > > > This could be very easy to do for Android Market developers... > > > Regards, > > Jose > > > On Aug 24, 8:16 pm, Trevor Johns <[email protected]> wrote: > > > > FYI: We have a blog post up on this topic. It covers many of the points I > > > made earlier, but I figured it's worth pointing out. > > > >http://android-developers.blogspot.com/2010/08/licensing-server-news.... > > > > -- > > > Trevor Johns > > > Google Developer Programs, Androidhttp://developer.android.com > > > <http://android-developers.blogspot.com/2010/08/licensing-server-news....> > > > > On Tue, Aug 24, 2010 at 8:26 AM, a1 <[email protected]> wrote: > > > > > But I'm not sure that native code is any harder to patch, and there > > > > > are still identifiable syscalls or calls back up to java for i/o to > > > > > show where it tries to accomplish verification. > > > > > First of all it's much harder to bypass especially if you are dealing > > > > with optimized code and you will have to do it at least twice (for arm > > > > abi and armv7 abi). Event toolchain setup is more complicated. > > > > > -- > > > > Bart Janusz (Beepstreet) > > > > > -- > > > > You received this message because you are subscribed to the Google > > > > Groups "Android Developers" group. > > > > To post to this group, send email to [email protected] > > > > To unsubscribe from this group, send email to > > > > [email protected]<android-developers%2Bunsubs > > > > [email protected]> > > > > For more options, visit this group at > > > >http://groups.google.com/group/android-developers?hl=e -- You received this message because you are subscribed to the Google Groups "Android Developers" group. To post to this group, send email to [email protected] To unsubscribe from this group, send email to [email protected] For more options, visit this group at http://groups.google.com/group/android-developers?hl=en
