So then the check for the checksum could be removed... same problem. Peter On 22 Okt., 07:50, Jose <toco...@gmail.com> 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 <trevorjo...@google.com> 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 <arco...@gmail.com> 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 android-developers@googlegroups.com > > > To unsubscribe from this group, send email to > > > android-developers+unsubscr...@googlegroups.com<android-developers%2Bunsubs > > > cr...@googlegroups.com> > > > For more options, visit this group at > > >http://groups.google.com/group/android-developers?hl=e
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